@article{kashani_rech_liu_baustert_ghaffari_angunawela_xiong_dinku_you_graham_et al._2023, title={Exciton Binding Energy in Organic Polymers: Experimental Considerations and Tuning Prospects}, volume={12}, ISSN={["1614-6840"]}, DOI={10.1002/aenm.202302837}, abstractNote={Abstract}, journal={ADVANCED ENERGY MATERIALS}, author={Kashani, Somayeh and Rech, Jeromy James and Liu, Tuo and Baustert, Kyle and Ghaffari, Abbas and Angunawela, Indunil and Xiong, Yuan and Dinku, Abay and You, Wei and Graham, Kenneth and et al.}, year={2023}, month={Dec} }
 @article{jia_ma_chen_meng_jain_angunawela_qin_kong_li_yang_et al._2023, title={Near-infrared absorbing acceptor with suppressed triplet exciton generation enabling high performance tandem organic solar cells}, volume={14}, ISSN={["2041-1723"]}, DOI={10.1038/s41467-023-36917-y}, abstractNote={Abstract}, number={1}, journal={NATURE COMMUNICATIONS}, author={Jia, Zhenrong and Ma, Qing and Chen, Zeng and Meng, Lei and Jain, Nakul and Angunawela, Indunil and Qin, Shucheng and Kong, Xiaolei and Li, Xiaojun and Yang, Yang and et al.}, year={2023}, month={Mar} }
 @article{zhang_sun_angunawela_meng_qin_zhou_li_zhuo_yang_zhang_et al._2022, title={16.52% Efficiency All-Polymer Solar Cells with High Tolerance of the Photoactive Layer Thickness}, volume={4}, ISSN={["1521-4095"]}, DOI={10.1002/adma.202108749}, abstractNote={Abstract}, journal={ADVANCED MATERIALS}, author={Zhang, Wenqing and Sun, Chenkai and Angunawela, Indunil and Meng, Lei and Qin, Shucheng and Zhou, Liuyang and Li, Shaman and Zhuo, Hongmei and Yang, Guang and Zhang, Zhi-Guo and et al.}, year={2022}, month={Apr} }
 @article{yi_pan_chen_chen_angunawela_luo_zhang_zeng_chen_qi_et al._2022, title={A Benzo[1,2-b:4,5-b']Difuran Based Donor Polymer Achieving High-Performance (>17%) Single-Junction Organic Solar Cells with a Fill Factor of 80.4%}, volume={7}, ISSN={["1614-6840"]}, DOI={10.1002/aenm.202201850}, abstractNote={Abstract}, journal={ADVANCED ENERGY MATERIALS}, author={Yi, Jicheng and Pan, Mingao and Chen, Lu and Chen, Yuzhong and Angunawela, Indunil Chathurangani and Luo, Siwei and Zhang, Ting and Zeng, Anping and Chen, Jian and Qi, Zhenyu and et al.}, year={2022}, month={Jul} }
 @article{ho_pei_qin_zhang_peng_angunawela_jones_yin_iqbal_reynolds_et al._2022, title={Importance of Electric-Field-Independent Mobilities in Thick-Film Organic Solar Cells}, volume={10}, ISSN={["1944-8252"]}, url={http://dx.doi.org/10.1021/acsami.2c11265}, DOI={10.1021/acsami.2c11265}, abstractNote={In organic solar cells (OSCs), a thick active layer usually yields a higher photocurrent with broader optical absorption than a thin active layer. In fact, a ∼300 nm thick active layer is more compatible with large-area processing methods and theoretically should be a better spot for efficiency optimization. However, the bottleneck of developing high-efficiency thick-film OSCs is the loss in fill factor (FF). The origin of the FF loss is not clearly understood, and there a direct method to identify photoactive materials for high-efficiency thick-film OSCs is lacking. Here, we demonstrate that the mobility field-dependent coefficient is an important parameter directly determining the FF loss in thick-film OSCs. Simulation results based on the drift-diffusion model reveal that a mobility field-dependent coefficient smaller than 10-3 (V/cm)-1/2 is required to maintain a good FF in thick-film devices. To confirm our simulation results, we studied the performance of two ternary bulk heterojunction (BHJ) blends, PTQ10:N3:PC71BM and PM6:N3:PC71BM. We found that the PTQ10 blend film has weaker field-dependent mobilities, giving rise to a more balanced electron-hole transport at low fields. While both the PM6 blend and PTQ10 blend yield good performance in thin-film devices (∼100 nm), only the PTQ10 blend can retain a FF = 74% with an active layer thickness of up to 300 nm. Combining the benefits of a higher JSC in thick-film devices, we achieved a PCE of 16.8% in a 300 nm thick PTQ10:N3:PC71BM OSC. Such a high FF in the thick-film PTQ10 blend is also consistent with the observation of lower charge recombination from light-intensity-dependent measurements and lower energetic disorder observed in photothermal deflection spectroscopy.}, journal={ACS APPLIED MATERIALS & INTERFACES}, publisher={American Chemical Society (ACS)}, author={Ho, Carr Hoi Yi and Pei, Yusen and Qin, Yunpeng and Zhang, Chujun and Peng, Zhengxing and Angunawela, Indunil and Jones, Austin L. and Yin, Hang and Iqbal, Hamna F. and Reynolds, John R. and et al.}, year={2022}, month={Oct} }
 @article{luo_bai_zhang_zhao_angunawela_zou_li_luo_feng_yu_et al._2022, title={Optimizing spectral and morphological match of nonfullerene acceptors toward efficient indoor organic photovoltaics with enhanced light source adaptability}, volume={98}, ISSN={["2211-3282"]}, DOI={10.1016/j.nanoen.2022.107281}, abstractNote={High-performance indoor organic photovoltaics (IOPV) require large-bandgap material systems to absorb visible light efficiently and reduce energy loss. However, state-of-the-art non-fullerene acceptors (NFAs) have absorptions in the near-infrared region and are thus not suitable for IOPV applications. Herein, we report a series of large-bandgap (>1.70 eV) NFAs named FCC-Cl-C8, FCC-Cl-4Ph and FCC-Cl-6Ph by modifying the alkyl side chains with alkylphenyl chains partially or completely. Results show that the bulky alkylphenyl side chains can finely tune the absorption properties of the NFAs and also affect their morphological properties. Interestingly, the best-performing NFA is the one (named FCC-Cl-4Ph) with partial alkyl and alkylphenyl substitutions, which blue-shift the absorption of the NFAs while minimizing the negative morphological effect of the bulky alkylphenyl chains. As a result, FCC-Cl-4Ph can achieve excellent indoor efficiencies over 29% under a 3000 K LED lamp at 1000 lux and show better solution processability over FCC-Cl-C8. More importantly, FCC-Cl-4Ph can maintain high indoor performance (29.7–26.8% at 1000 lux) under a wide range of indoor lighting spectra (2600, 3000, 4000, and 6500 K LED lamps), which should be due to the blue-shifted spectra of FCC-Cl-4Ph and better matching with various indoor conditions. This work reveals an interesting structure-property relationship and offers useful strategies for the further design of NFAs toward efficient IOPV devices.}, journal={NANO ENERGY}, author={Luo, Siwei and Bai, Fujin and Zhang, Jianquan and Zhao, Heng and Angunawela, Indunil and Zou, Xinhui and Li, Xiaojun and Luo, Zhenghui and Feng, Kui and Yu, Han and et al.}, year={2022}, month={Jul} }
 @article{li_kong_chen_angunawela_zhu_li_meng_ade_li_2022, title={Small-Molecule Acceptor with Unsymmetric Substituents and Fused Rings for High-Performance Organic Solar Cells with Enhanced Mobility and Reduced Energy Losses}, volume={11}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.2c17235}, abstractNote={A new unsymmetric small-molecule acceptor (SMA) BTPOSe-4F was designed by unsymmetric structure modification to Y6 with an alkyl upper side chain replaced by an alkoxy side chain and a sulfur atom in its central fused ring replaced by a selenium atom, for the application as an acceptor to fabricate organic solar cells (OSCs). BTPOSe-4F exhibits a higher lowest unoccupied molecular orbital (LUMO) energy level, a reduced nonradiation energy loss, and better charge extraction properties in its binary OSCs with a higher Voc of 0.886. Furthermore, the ternary OSCs with the addition of PC71BM demonstrated a higher power conversion efficiency (PCE) of 17.33% with Voc of 0.890 V. This work reveals that the unsymmetric modification strategy can further give impetus to the photovoltaic performance promotion of OSCs for Y6-series SMAs.}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Li, Zechen and Kong, Xiaolei and Chen, Zeng and Angunawela, Indunil and Zhu, Haiming and Li, Xiaojun and Meng, Lei and Ade, Harald and Li, Yongfang}, year={2022}, month={Nov} }
 @article{steckmann_angunawela_kashani_zhu_nahid_ade_gadisa_2022, title={Ultrathin P(NDI2OD-T2) Films with High Electron Mobility in Both Bottom-Gate and Top-Gate Transistors}, volume={3}, ISSN={["2199-160X"]}, url={https://doi.org/10.1002/aelm.202101324}, DOI={10.1002/aelm.202101324}, abstractNote={Abstract}, journal={ADVANCED ELECTRONIC MATERIALS}, author={Steckmann, Thomas and Angunawela, Indunil and Kashani, Somayeh and Zhu, Youqin and Nahid, Masrur M. and Ade, Harald and Gadisa, Abay}, year={2022}, month={Mar} }
 @article{zeng_ma_pan_chen_ma_zhao_zhang_kim_shang_luo_et al._2021, title={A Chlorinated Donor Polymer Achieving High-Performance Organic Solar Cells with a Wide Range of Polymer Molecular Weight}, volume={6}, ISSN={["1616-3028"]}, DOI={10.1002/adfm.202102413}, abstractNote={Abstract}, journal={ADVANCED FUNCTIONAL MATERIALS}, author={Zeng, Anping and Ma, Xiaoling and Pan, Mingao and Chen, Yuzhong and Ma, Ruijie and Zhao, Heng and Zhang, Jianquan and Kim, Ha Kyung and Shang, Ao and Luo, Siwei and et al.}, year={2021}, month={Jun} }
 @article{yu_luo_sun_angunawela_qi_peng_zhou_han_wei_pan_et al._2021, title={A Difluoro-Monobromo End Group Enables High-Performance Polymer Acceptor and Efficient All-Polymer Solar Cells Processable with Green Solvent under Ambient Condition}, volume={31}, ISSN={["1616-3028"]}, DOI={10.1002/adfm.202100791}, abstractNote={Abstract}, number={25}, journal={ADVANCED FUNCTIONAL MATERIALS}, author={Yu, Han and Luo, Siwei and Sun, Rui and Angunawela, Indunil and Qi, Zhenyu and Peng, Zhengxing and Zhou, Wentao and Han, Han and Wei, Rong and Pan, Mingao and et al.}, year={2021}, month={Jun} }
 @article{zhang_bai_angunawela_xu_luo_li_chai_yu_chen_hu_et al._2021, title={Alkyl-Chain Branching of Non-Fullerene Acceptors Flanking Conjugated Side Groups toward Highly Efficient Organic Solar Cells}, volume={10}, ISSN={["1614-6840"]}, DOI={10.1002/aenm.202102596}, abstractNote={Abstract}, journal={ADVANCED ENERGY MATERIALS}, author={Zhang, Jianquan and Bai, Fujin and Angunawela, Indunil and Xu, Xiaoyun and Luo, Siwei and Li, Chao and Chai, Gaoda and Yu, Han and Chen, Yuzhong and Hu, Huawei and et al.}, year={2021}, month={Oct} }
 @article{jia_qin_meng_ma_angunawela_zhang_li_he_lai_li_et al._2021, title={High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor}, volume={12}, ISSN={["2041-1723"]}, DOI={10.1038/s41467-020-20431-6}, abstractNote={Abstract}, number={1}, journal={NATURE COMMUNICATIONS}, author={Jia, Zhenrong and Qin, Shucheng and Meng, Lei and Ma, Qing and Angunawela, Indunil and Zhang, Jinyuan and Li, Xiaojun and He, Yakun and Lai, Wenbin and Li, Ning and et al.}, year={2021}, month={Jan} }
 @article{zhou_meng_zhang_zhu_qin_angunawela_wan_ade_li_2021, title={Introducing Low-Cost Pyrazine Unit into Terpolymer Enables High-Performance Polymer Solar Cells with Efficiency of 18.23%}, volume={11}, ISSN={["1616-3028"]}, DOI={10.1002/adfm.202109271}, abstractNote={Abstract}, journal={ADVANCED FUNCTIONAL MATERIALS}, author={Zhou, Liuyang and Meng, Lei and Zhang, Jinyuan and Zhu, Can and Qin, Shucheng and Angunawela, Indunil and Wan, Yan and Ade, Harald and Li, Yongfang}, year={2021}, month={Nov} }
 @article{du_hu_zhang_meng_yue_angunawela_yan_qin_kong_zhang_et al._2021, title={Polymerized small molecular acceptor based all-polymer solar cells with an efficiency of 16.16% via tuning polymer blend morphology by molecular design}, volume={12}, ISSN={["2041-1723"]}, DOI={10.1038/s41467-021-25638-9}, abstractNote={Abstract}, number={1}, journal={NATURE COMMUNICATIONS}, author={Du, Jiaqi and Hu, Ke and Zhang, Jinyuan and Meng, Lei and Yue, Jiling and Angunawela, Indunil and Yan, Hongping and Qin, Shucheng and Kong, Xiaolei and Zhang, Zhanjun and et al.}, year={2021}, month={Sep} }
 @article{bin_angunawela_ma_nallapaneni_zhu_leenaers_saes_wienk_yan_ade_et al._2020, title={Effect of main and side chain chlorination on the photovoltaic properties of benzodithiophene-alt-benzotriazole polymers}, volume={8}, ISSN={["2050-7534"]}, DOI={10.1039/d0tc03095c}, abstractNote={Introduction of chlorine in the conjugated side chains significantly improves open-circuit voltage and power conversion efficiency, benefiting from a lower HOMO energy level, well-balanced charge transport and superior nanoscale morphology.}, number={43}, journal={JOURNAL OF MATERIALS CHEMISTRY C}, author={Bin, Haijun and Angunawela, Indunil and Ma, Ruijie and Nallapaneni, Asritha and Zhu, Chenhui and Leenaers, Pieter J. and Saes, Bart W. H. and Wienk, Martijn M. and Yan, He and Ade, Harald and et al.}, year={2020}, month={Nov}, pages={15426–15435} }
 @article{li_angunawela_chang_zhou_huang_zhong_liebman-pelaez_zhu_meng_xie_et al._2020, title={Effect of the chlorine substitution position of the end-group on intermolecular interactions and photovoltaic performance of small molecule acceptors}, volume={13}, ISSN={["1754-5706"]}, DOI={10.1039/d0ee02251a}, abstractNote={Differences in the intermolecular interactions of small molecule acceptors with different chlorine substitution positions affect their molecular packing and photovoltaic properties.}, number={12}, journal={ENERGY & ENVIRONMENTAL SCIENCE}, author={Li, Xiaojun and Angunawela, Indunil and Chang, Yuan and Zhou, Jiadong and Huang, He and Zhong, Lian and Liebman-Pelaez, Alex and Zhu, Chenhui and Meng, Lei and Xie, Zengqi and et al.}, year={2020}, month={Dec}, pages={5028–5038} }
 @article{li_huang_angunawela_zhou_du_liebman-pelaez_zhu_zhang_meng_xie_et al._2020, title={Effects of Short-Axis Alkoxy Substituents on Molecular Self-Assembly and Photovoltaic Performance of Indacenodithiophene-Based Acceptors}, volume={30}, ISSN={["1616-3028"]}, DOI={10.1002/adfm.201906855}, abstractNote={Abstract}, number={3}, journal={ADVANCED FUNCTIONAL MATERIALS}, author={Li, Xiaojun and Huang, He and Angunawela, Indunil and Zhou, Jiadong and Du, Jiaqi and Liebman-Pelaez, Alex and Zhu, Chenhui and Zhang, Zhanjun and Meng, Lei and Xie, Zengqi and et al.}, year={2020}, month={Jan} }
 @article{huang_li_sun_angunawela_qiu_du_qin_meng_zhang_ade_et al._2020, title={Green solvent-processed organic solar cells based on a low cost polymer donor and a small molecule acceptor}, volume={8}, ISSN={["2050-7534"]}, DOI={10.1039/d0tc01313g}, abstractNote={High-performance OSCs were fabricated based on polymer PTQ10 as donor and HO-IDIC-2F as acceptor, using non-halogen tetrahydrofuran as processing solvent and the PCE of the as-cast OSCs reached 12.20% which is competitive with regular chloroform.}, number={23}, journal={JOURNAL OF MATERIALS CHEMISTRY C}, author={Huang, He and Li, Xiaojun and Sun, Chenkai and Angunawela, Indunil and Qiu, Beibei and Du, Jiaqi and Qin, Shucheng and Meng, Lei and Zhang, Zhanjun and Ade, Harald and et al.}, year={2020}, month={Jun}, pages={7718–7724} }
 @article{du_hu_meng_angunawela_zhang_qin_liebman-pelaez_zhu_zhang_ade_et al._2020, title={High-Performance All-Polymer Solar Cells: Synthesis of Polymer Acceptor by a Random Ternary Copolymerization Strategy}, volume={59}, ISSN={["1521-3773"]}, DOI={10.1002/anie.202005357}, abstractNote={Abstract}, number={35}, journal={ANGEWANDTE CHEMIE-INTERNATIONAL EDITION}, author={Du, Jiaqi and Hu, Ke and Meng, Lei and Angunawela, Indunil and Zhang, Jinyuan and Qin, Shucheng and Liebman-Pelaez, Alex and Zhu, Chenhui and Zhang, Zhanjun and Ade, Harald and et al.}, year={2020}, month={Aug}, pages={15181–15185} }
 @article{bin_angunawela_qiu_colberts_li_dyson_wienk_ade_li_janssen_2020, title={Precise Control of Phase Separation Enables 12% Efficiency in All Small Molecule Solar Cells}, volume={10}, ISSN={["1614-6840"]}, url={https://doi.org/10.1002/aenm.202001589}, DOI={10.1002/aenm.202001589}, abstractNote={Abstract}, number={34}, journal={ADVANCED ENERGY MATERIALS}, publisher={Wiley}, author={Bin, Haijun and Angunawela, Indunil and Qiu, Beibei and Colberts, Fallon J. M. and Li, Mengmeng and Dyson, Matthew J. and Wienk, Martijn M. and Ade, Harald and Li, Yongfang and Janssen, Rene A. J.}, year={2020}, month={Sep} }
 @article{pan_sun_bin_angunawela_lai_meng_ade_li_2020, title={Side-chain engineering of medium bandgap polymer donors for efficient polymer solar cells}, volume={78}, ISSN={["1878-5530"]}, DOI={10.1016/j.orgel.2019.105603}, abstractNote={Polymer solar cells (PSCs) have received widespread attentions recently due to the significant innovations of narrow bandgap n-type organic semiconductor (n-OS) acceptors. To obtain efficient PSCs, it is crucial to employ suitable donor/acceptor pair with matched electronic energy levels, complementary absorption spectra, appropriate molecular self-assembly behavior and preferred blend film morphology, which can be achieved by rational molecular structure optimization. Here we develop three D-A copolymer donors J55, J65 and J75 based on identical building blocks of bithienyl-benzodithiophene (BDTT) D-unit and bifluorine substituted benzotriazole A-unit with different flexible side-chains on BDTT unit to regulate the molecular electronic energy levels and molecular aggregation features, for further improving photovoltaic performance of the PSCs. The three D-A copolymers showed similar absorption profiles due to the identical building blocks. In comparison with the alkyl side-chain substituted polymer J55, the polymers J65 and J75 with alkylthio side-chain and alkylsilyl side-chain showed gradually down-shifted highest occupied molecular orbital energy levels (EHOMO) of −5.38 and −5.43 eV, respectively, which is beneficial for obtaining high open-circuit voltage (Voc). The favorable morphology with preferred face-on orientation and stronger integrated intensity of the π-π stacking peak was formed in J75 blend, which contributes to charge transport, thus enhancing the fill factor (FF) and Jsc. The PSC with J75 as donor and ITIC as acceptor exhibits an efficient PCE of 11.07%, with a Voc of 0.94 V, an enhanced Jsc of 16.99 mA cm−2 and a high FF of 69.29%.}, journal={ORGANIC ELECTRONICS}, author={Pan, Fei and Sun, Chenkai and Bin, Haijun and Angunawela, Indunil and Lai, Wenbin and Meng, Lei and Ade, Harald and Li, Yongfang}, year={2020}, month={Mar} }
 @article{liu_kumagai_manzhos_chen_angunawela_nahid_feron_bottle_bell_ade_et al._2020, title={Synergistic Use of Pyridine and Selenophene in a Diketopyrrolopyrrole-Based Conjugated Polymer Enhances the Electron Mobility in Organic Transistors}, volume={30}, ISSN={["1616-3028"]}, DOI={10.1002/adfm.202000489}, abstractNote={Abstract}, number={34}, journal={ADVANCED FUNCTIONAL MATERIALS}, author={Liu, Qian and Kumagai, Shohei and Manzhos, Sergei and Chen, Yingqian and Angunawela, Indunil and Nahid, Masrur Morshed and Feron, Krishna and Bottle, Steven E. and Bell, John and Ade, Harald and et al.}, year={2020}, month={Aug} }
 @article{carpenter_ghasemi_gann_angunawela_stuard_rech_ritchie_brendan t. o'connor_atkin_you_et al._2019, title={Competition between Exceptionally Long-Range Alkyl Sidechain Ordering and Backbone Ordering in Semiconducting Polymers and Its Impact on Electronic and Optoelectronic Properties}, volume={29}, ISSN={["1616-3028"]}, DOI={10.1002/adfm.201806977}, abstractNote={Abstract}, number={5}, journal={ADVANCED FUNCTIONAL MATERIALS}, author={Carpenter, Joshua H. and Ghasemi, Masoud and Gann, Eliot and Angunawela, Indunil and Stuard, Samuel J. and Rech, Jeromy James and Ritchie, Earl and Brendan T. O'Connor and Atkin, Joanna and You, Wei and et al.}, year={2019}, month={Feb} }
 @article{ghasemi_hu_peng_rech_angunawela_carpenter_stuard_wadsworth_mcculloch_you_et al._2019, title={Delineation of Thermodynamic and Kinetic Factors that Control Stability in Non-fullerene Organic Solar Cells}, volume={3}, ISSN={["2542-4351"]}, DOI={10.1016/j.joule.2019.03.020}, abstractNote={Although non-fullerene small molecular acceptors (NF-SMAs) are dominating current research in organic solar cells (OSCs), measurements of thermodynamics drivers and kinetic factors determining their morphological stability are lacking. Here, we delineate and measure such factors in crystallizable NF-SMA blends and discuss four model systems with respect to their meta-stability and degree of vitrification. We determine for the first time the amorphous-amorphous phase diagram in an NF-SMA system and show that its deep quench depth can result in severe burn-in degradation. We estimate the relative phase behavior of four other materials systems. Additionally, we derive room-temperature diffusion coefficients and conclude that the morphology needs to be stabilized by vitrification corresponding to diffusion constants below 10−22 cm2/s. Our results show that to achieve stability via rational molecular design, the thermodynamics, glass transition temperature, diffusion properties, and related structure-function relations need to be more extensively studied and understood.}, number={5}, journal={JOULE}, author={Ghasemi, Masoud and Hu, Huawei and Peng, Zhengxing and Rech, Jeromy James and Angunawela, Indunil and Carpenter, Joshua H. and Stuard, Samuel J. and Wadsworth, Andrew and McCulloch, Iain and You, Wei and et al.}, year={2019}, month={May}, pages={1328–1348} }
 @article{zhong_bin_angunawela_jia_qiu_sun_li_zhang_ade_li_2019, title={Effect of Replacing Thiophene by Selenophene on the Photovoltaic Performance of Wide Bandgap Copolymer Donors}, volume={52}, ISSN={["1520-5835"]}, DOI={10.1021/acs.macromol.9b00484}, abstractNote={Two polymers J75 and J76 with selenophene instead of thiophene on the conjugated side chain of benzodithiophene (BDT) unit or π bridges of polymer J71 were designed and synthesized, for investigating the effect of selenophene substitution on the photovoltaic performance of the conjugated polymer donors in comparison with J71. The selenophene π bridges in J76 can narrow optical band gap and red-shift absorption of the polymer film by ca. 25 nm, but the highest occupied molecular orbital (HOMO) energy level (EHOMO) of J76 is up-shifted slightly by 0.04 eV. Two typical electron acceptors of fullerene derivative PC71BM and the nonfullerene acceptor m-ITIC were used to investigate photovoltaic performance of the polymer donors. For the PC71BM-based polymer solar cells (PSCs), J76 with selenophene π bridges shows the best power-conversion efficiency (PCE) of 8.40% in comparison with the J71-based device (PCE = 6.79%), benefitted from the red-shifted absorption, larger coherence length, purer average domains, an...}, number={12}, journal={MACROMOLECULES}, author={Zhong, Lian and Bin, Haijun and Angunawela, Indunil and Jia, Zhenrong and Qiu, Beibei and Sun, Chenkai and Li, Xiaojun and Zhang, Zhanjun and Ade, Harald and Li, Yongfang}, year={2019}, month={Jun}, pages={4776–4784} }
 @article{ma_xue_zhong_angunawela_chen_ade_huo_zhang_li_2019, title={High voltage all polymer solar cells with a polymer acceptor based on NDI and benzotriazole}, volume={7}, ISSN={["2050-7534"]}, DOI={10.1039/c9tc01922g}, abstractNote={A new n-type conjugated copolymer LA03 based on naphthalene diimide and benzotriazole with thiophene π-bridges was synthesized, and the all polymer solar cells with PBDB-T as donor and LA03 as acceptor achieved a power conversion efficiency of 6.49%.}, number={29}, journal={JOURNAL OF MATERIALS CHEMISTRY C}, author={Ma, Qing and Xue, Xiaonan and Zhong, Lian and Angunawela, Indunil and Chen, Shanshan and Ade, Harald and Huo, Lijun and Zhang, Zhanjun and Li, Yongfang}, year={2019}, month={Aug}, pages={9031–9037} }
 @article{angunawela_ye_bin_zhang_gadisa_li_ade_2019, title={Multi-length scale morphology of nonfullerene all-small molecule blends and its relation to device function in organic solar cells}, volume={3}, ISSN={["2052-1537"]}, url={https://doi.org/10.1039/C8QM00503F}, DOI={10.1039/c8qm00503f}, abstractNote={Device characteristics of a pair of nonfullerene small molecule solar cells were well correlated to their mesoscale morphologyviaresonant soft X-ray scattering.}, number={1}, journal={MATERIALS CHEMISTRY FRONTIERS}, publisher={Royal Society of Chemistry (RSC)}, author={Angunawela, Indunil and Ye, Long and Bin, Haijun and Zhang, Zhi-Guo and Gadisa, Abay and Li, Yongfang and Ade, Harald}, year={2019}, month={Jan}, pages={137–144} }
 @article{bin_yao_yang_angunawela_sun_gao_ye_qiu_xue_zhu_et al._2018, title={High-Efficiency All-Small-Molecule Organic Solar Cells Based on an Organic Molecule Donor with Alkylsilyl-Thienyl Conjugated Side Chains}, volume={30}, ISSN={["1521-4095"]}, url={https://publons.com/wos-op/publon/7528268/}, DOI={10.1002/adma.201706361}, abstractNote={Abstract}, number={27}, journal={ADVANCED MATERIALS}, author={Bin, Haijun and Yao, Jia and Yang, Yankang and Angunawela, Indunil and Sun, Chenkai and Gao, Liang and Ye, Long and Qiu, Beibei and Xue, Lingwei and Zhu, Chenhui and et al.}, year={2018}, month={Jul} }
 @article{li_yao_angunawela_sun_xue_liebman-pelaez_zhu_yang_zhang_ade_et al._2018, title={Improvement of Photovoltaic Performance of Polymer Solar Cells by Rational Molecular Optimization of Organic Molecule Acceptors}, volume={8}, ISSN={["1614-6840"]}, DOI={10.1002/aenm.201800815}, abstractNote={Abstract}, number={23}, journal={ADVANCED ENERGY MATERIALS}, author={Li, Xiaojun and Yao, Jia and Angunawela, Indunil and Sun, Chenkai and Xue, Lingwei and Liebman-Pelaez, Alexander and Zhu, Chenhui and Yang, Chunhe and Zhang, Zhi-Guo and Ade, Harald and et al.}, year={2018}, month={Aug} }