@article{ahmad_shinde_song_kim_2023, title={Preparation of CoS2/WO3 thin films for the construction of electrochromic devices}, volume={49}, ISSN={["1873-3956"]}, DOI={10.1016/j.ceramint.2022.11.195}, abstractNote={In this study, we report CoS2/WO3 (CSW) composites as electrochromic materials for applications in smart windows. A hydrothermal approach was used to obtain CoS2, whereas WO3 was prepared using the sol-gel method. We prepared the CSW composites with various weight ratios of CoS2 (0.2, 0.5, and 2.0 wt%) by ultrasonication dispersion. The physical and chemical properties of the CSW composites (CSW 0.2, CSW 0.5, and CSW 2.0) were examined via X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). Additionally, the WO3 and CSW based ECDs were fabricated using indium-tin oxide (ITO) substrate. The CSW 0.5 based ECDs exhibited excellent coloration efficiency of 64.5 cm2C-1 and an optical contrast of 73.31%. The enhanced coloration efficiency and optical contrast may be attributed to synergistic interactions between CoS2 and WO3. The ECDs also exhibited good stability up to 10,000 cycles.}, number={6}, journal={CERAMICS INTERNATIONAL}, author={Ahmad, Khursheed and Shinde, Mahesh A. and Song, Gihwan and Kim, Haekyoung}, year={2023}, month={Mar}, pages={10119–10128} }
 @article{ahmad_shinde_song_kim_2023, title={Stability improvement of N-GQDs/AgNWs/PET based flexible electrochromic device for smart window application}, volume={157}, ISSN={["1879-0259"]}, DOI={10.1016/j.inoche.2023.111383}, abstractNote={The design and development of cost-effective and highly stable flexible transparent conductive electrodes (f-TCEs) is crucial for various optoelectronic applications. Herein, we report the fabrication of nitrogen-doped graphene quantum dot (N-GQD)-protected silver nanowire (AgNWs)-modified polyethylene terephthalate (PET) electrodes as f-TCEs (N-GQDs/AgNWs/PET). Furthermore, we fabricated flexible electrochromic devices (ECDs) for smart window applications using N-GQD/AgNW/PET as the f-TCE. The presence of N-GQDs on the AgNW/PET electrode improved the stability of the developed N-GQD/AgNW/PET-based flexible ECDs. The N-GQDs/AgNWs/PET-based flexible ECDs demonstrated an excellent coloration efficiency (ȠCE) of 42.7 cm2C−1 with an optical contrast of 45.4 %. Additionally, they demonstrated fast coloring and bleaching times of 6.9, and 5.7 s, respectively.}, journal={INORGANIC CHEMISTRY COMMUNICATIONS}, author={Ahmad, Khursheed and Shinde, Mahesh A. and Song, Gihwan and Kim, Haekyoung}, year={2023}, month={Nov} }
 @article{ahmad_shinde_song_kim_2022, title={Fabrication of MoS2/rGO/AgNWs on PET substrate for flexible electrochromic devices}, volume={287}, ISSN={["0379-6779"]}, DOI={10.1016/j.synthmet.2022.117074}, abstractNote={Emergence of stretchable and flexible optoelectronic devices has motivated scientific community to develop novel transparent conductive electrodes (TCE) as an alternative to indium tin oxide (ITO) substrates. Recently, flexible electrochromic devices (ECDs) have drawn enormous attention because of their flexible nature and potential for next-generation smart windows application. The TCE should have high electrical conductivity, smooth surface, high transparency, and mechanical flexibility. Silver nanowires (AgNWs) have been used as electrode material for the development of flexible TCE for ECDs or smart windows applications. In present work, we have synthesized molybdenum disulfide (MoS2) flowers decorated reduced graphene (rGO) composite via hydrothermal method. Further, flexible TCE (MoS2/rGO/AgNWs) was developed on polyethylene terephthalate (PET) substrate for the construction of flexible ECDs. The MoS2/rGO composite was employed as passivation layer to reduce the oxidation of AgNWs during electrochemical reactions. The use passivation layer (MoS2/rGO) hindered the direct contact between AgNWs and electrolyte which may improve the stability of the AgNWs based ECDs. The fabricated flexible ECDs exhibited good coloration efficiency of 50 cm2/C with stability up to 450 cycles.}, journal={SYNTHETIC METALS}, author={Ahmad, Khursheed and Shinde, Mahesh Ashok and Song, Gihwan and Kim, Haekyoung}, year={2022}, month={Jul} }
 @article{ahmad_shinde_song_kim_2022, title={Fabrication of MoSe2/AgNWs/PET electrode for flexible electrochromic smart window applications}, volume={132}, ISSN={["1873-1252"]}, DOI={10.1016/j.optmat.2022.112805}, abstractNote={The emergence of flexible and stretchable optoelectronic devices has led to the design and development of flexible and transparent conductive electrodes (TCEs). Smart windows, comprised of electrochromic devices (ECDs) based on electrochromic (EC) materials, have drawn enormous attention owing to their potential in blocking heat generated by the sunlight. Consequently, the design and fabrication of flexible ECDs is of great significance. In this study, the hydrothermal method was used to prepare two-dimensional molybdenum diselenide (MoSe2), which was employed as a passivation layer to protect silver nanowires (AgNWs). A flexible TCE (MoSe2/AgNWs/PET) was designed to develop a flexible ECD, PET/AgNWs/MoSe2/WO3/EL-72/MoSe2/AgNWs/PET, which exhibited a good coloration efficiency of 37.47 cm2/C with an optical contrast of 42.14%.}, journal={OPTICAL MATERIALS}, author={Ahmad, Khursheed and Shinde, Mahesh A. and Song, Gihwan and Kim, Haekyoung}, year={2022}, month={Oct} }