@article{atanasov_kalanyan_parsons_2016, title={Inherent substrate-dependent growth initiation and selective-area atomic layer deposition of TiO2 using "water-free" metal-halide/metal alkoxide reactants}, volume={34}, ISSN={["1520-8559"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000375115800049&KeyUID=WOS:000375115800049}, DOI={10.1116/1.4938481}, abstractNote={Titanium dioxide atomic layer deposition (ALD) is shown to proceed selectively on oxidized surfaces with minimal deposition on hydrogen-terminated silicon using titanium tetrachloride (TiCl4) and titanium tetra-isopropoxide [Ti(OCH(CH3)2)4, TTIP] precursors. Ex situ x-ray photoelectron spectroscopy shows a more rapid ALD nucleation rate on both Si–OH and Si–H surfaces when water is the oxygen source. Eliminating water delays the oxidation of the hydrogen-terminated silicon, thereby impeding TiO2 film growth. For deposition at 170 °C, the authors achieve ∼2 nm of TiO2 on SiO2 before substantial growth takes place on Si–H. On both Si–H and Si–OH, the surface reactions proceed during the first few TiCl4/TTIP ALD exposure steps where the resulting products act to impede subsequent growth, especially on Si–H surfaces. Insight from this work helps expand understanding of “inherent” substrate selective ALD, where native differences in substrate surface reaction chemistry are used to promote desired selective-area growth.}, number={1}, journal={JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A}, author={Atanasov, Sarah E. and Kalanyan, Berc and Parsons, Gregory N.}, year={2016}, month={Jan} }
 @article{an_huang_long_kalanyan_lu_gubbins_2016, title={Liquid–Solid Nanofriction and Interfacial Wetting}, volume={32}, ISSN={0743-7463 1520-5827}, url={http://dx.doi.org/10.1021/acs.langmuir.5b04115}, DOI={10.1021/acs.langmuir.5b04115}, abstractNote={Using atomic force microscopy, the nanofriction coefficient was measured systematically for a series of liquids on planar graphite, silica and mica surfaces. This allows us to explore the quantitative interplay between nanofriction at liquid-solid interfaces and interfacial wetting. A corresponding states theory analysis shows that the nanofriction coefficient, μ = dF(F)/dF(N), where FF is the friction force and FN is the normal force, is a function of three dimensionless parameters that reflect the intermolecular forces involved and the structure of the solid substrate. Of these, we show that one parameter in particular, β = ρ(s)Δ(s)σ(ls)(2), where ρ(s) is the atomic density of the solid, Δ(s) is the spacing between layers of solid atoms, and σ(ls) is the molecular diameter that characterizes the liquid-substrate interaction, is very important in determining the friction coefficient. This parameter β, which we term the structure adhesion parameter, provides a measure of the intermolecular interaction between a liquid molecule and the substrate and also of the surface area of contact of the liquid molecule with the substrate. We find a linear dependence of μ on the structure adhesion parameter for the systems studied. We also find that increasing β leads to an increase in the vertical adhesion forces FA (the attractive force exerted by the solid surface on the liquid film). Our quantitative relationship between the nanofriction coefficient and the key parameter β which governs the vertical adhesive strength, opens up an opportunity for describing liquid flows on solid surfaces at the molecular level, with implications for the development of membrane and nanofluidic devices.}, number={3}, journal={Langmuir}, publisher={American Chemical Society (ACS)}, author={An, Rong and Huang, Liangliang and Long, Yun and Kalanyan, Berc and Lu, Xiaohua and Gubbins, Keith E}, year={2016}, month={Jan}, pages={743–750} }
 @article{kalanyan_lemaire_atanasov_ritz_parsons_2016, title={Using Hydrogen To Expand the Inherent Substrate Selectivity Window During Tungsten Atomic Layer Deposition}, volume={28}, ISSN={["1520-5002"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000368322600017&KeyUID=WOS:000368322600017}, DOI={10.1021/acs.chemmater.5b03319}, abstractNote={Area-selective thin film deposition is expected to be important in achieving sub-10 nm semiconductor devices, enabling feature patterning, alignment to underlying structures, and edge definition. Atomic layer deposition (ALD) offers advantages over common chemical vapor deposition methods, such as precise thickness control and excellent conformality. Furthermore, several ALD processes show inherent propensity for substrate-dependent nucleation. For example, tungsten ALD using SiH4 (or Si2H6) and WF6 is more energetically favorable on Si than on SiO2, but selectivity is often lost after several ALD cycles. We show that modifying the W ALD process chemistry can decrease the W nucleation rate on SiO2, thereby expanding the ALD “selectivity window”. Specifically, we find that adding H2 during the WF6 dose step helps passivate SiO2 against W nucleation without modifying W growth on silicon. Surface characterization confirms that H2 promotes fluorine passivation of SiO2, likely through surface reactions with HF...}, number={1}, journal={CHEMISTRY OF MATERIALS}, author={Kalanyan, Berc and Lemaire, Paul C. and Atanasov, Sarah E. and Ritz, Mariah J. and Parsons, Gregory N.}, year={2016}, month={Jan}, pages={117–126} }
 @article{knauf_kalanyan_parsons_dempsey_2015, title={Charge Recombination Dynamics in Sensitized SnO2/TiO2 Core/Shell Photoanodes}, volume={119}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000367561700014&KeyUID=WOS:000367561700014}, DOI={10.1021/acs.jpcc.5b10574}, abstractNote={Studies have been conducted to examine the mechanisms of charge recombination in dye-sensitized SnO2/TiO2 core/shell films. Nanostructured SnO2/TiO2 core/shell films varying in TiO2 shell thicknesses were prepared via atomic layer deposition and sensitized with a phosphonate-derivatized ruthenium chromophore [Ru(bpy)2(4,4′-(PO3H2)2bpy)]2+. Transient absorption spectroscopy was used to study the interfacial charge recombination dynamics for these core/shell materials. Charge recombination for sensitized, as-deposited SnO2/TiO2 core/shell systems is dominated by a tunneling mechanism for shell thicknesses between 0 and 3.2 nm, with β = 0.25 A–1. For shell thicknesses greater than 3.2 nm, recombination primarily proceeds directly via electrons localized in the relatively thick TiO2 shell. Annealing the SnO2/TiO2 core/shell structure at 450 °C affects the recombination dynamics substantially; charge recombination dynamics for the annealed films do not show a dependence on shell thickness and are comparable to...}, number={51}, journal={Journal of Physical Chemistry C}, author={Knauf, Robin R. and Kalanyan, Berc and Parsons, Gregory and Dempsey, Jillian L.}, year={2015}, pages={28353–28360} }
 @article{alibabaei_farnum_kalanyan_brennaman_losego_parsons_meyer_2014, title={Atomic Layer Deposition of TiO2 on Mesoporous nanolTO: Conductive Core-Shell Photoanodes for Dye-Sensitized Solar Cells}, volume={14}, ISSN={["1530-6992"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000337337100043&KeyUID=WOS:000337337100043}, DOI={10.1021/nl5006433}, abstractNote={Core-shell structures consisting of thin shells of conformal TiO2 deposited on high surface area, conductive Sn-doped In2O3 nanoparticle. Mesoscopic films were synthesized by atomic layer deposition and studied for application in dye-sensitized solar cells. Results obtained with the N719 dye show that short-circuit current densities, open-circuit voltages, and back electron transfer lifetimes all increased with increasing TiO2 shell thickness up to 1.8-2.4 nm and then decline as the thickness was increased further. At higher shell thicknesses, back electron transfer to -Ru(III) is increasingly competitive with transport to the nanoITO core resulting in decreased device efficiencies.}, number={6}, journal={NANO LETTERS}, author={Alibabaei, Leila and Farnum, Byron H. and Kalanyan, Berc and Brennaman, M. Kyle and Losego, Mark D. and Parsons, Gregory N. and Meyer, Thomas J.}, year={2014}, month={Jun}, pages={3255–3261} }
 @article{song_vannucci_farnum_lapides_brennaman_kalanyan_alibabaei_concepcion_losego_parsons_et al._2014, title={Visible Light Driven Benzyl Alcohol Dehydrogenation in a Dye-Sensitized Photoelectrosynthesis Cell}, volume={136}, ISSN={["0002-7863"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000338980500035&KeyUID=WOS:000338980500035}, DOI={10.1021/ja505022f}, abstractNote={Light-driven dehydrogenation of benzyl alcohol (BnOH) to benzaldehyde and hydrogen has been shown to occur in a dye-sensitized photoelectrosynthesis cell (DSPEC). In the DSPEC, the photoanode consists of mesoporous films of TiO2 nanoparticles or of core/shell nanoparticles with tin-doped In2O3 nanoparticle (nanoITO) cores and thin layers of TiO2 deposited by atomic layer deposition (nanoITO/TiO2). Metal oxide surfaces were coderivatized with both a ruthenium polypyridyl chromophore in excess and an oxidation catalyst. Chromophore excitation and electron injection were followed by cross-surface electron-transfer activation of the catalyst to -Ru(IV)═O(2+), which then oxidizes benzyl alcohol to benzaldehyde. The injected electrons are transferred to a Pt electrode for H2 production. The nanoITO/TiO2 core/shell structure causes a decrease of up to 2 orders of magnitude in back electron-transfer rate compared to TiO2. At the optimized shell thickness, sustained absorbed photon to current efficiency of 3.7% was achieved for BnOH dehydrogenation, an enhancement of ~10 compared to TiO2.}, number={27}, journal={JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, author={Song, Wenjing and Vannucci, Aaron K. and Farnum, Byron H. and Lapides, Alexander M. and Brennaman, M. Kyle and Kalanyan, Berc and Alibabaei, Leila and Concepcion, Javier J. and Losego, Mark D. and Parsons, Gregory N. and et al.}, year={2014}, month={Jul}, pages={9773–9779} }
 @article{vannucci_alibabaei_losego_concepcion_kalanyan_parsons_meyer_2013, title={Crossing the divide between homogeneous and heterogeneous catalysis in water oxidation}, volume={110}, ISSN={["0027-8424"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000328858800030&KeyUID=WOS:000328858800030}, DOI={10.1073/pnas.1319832110}, abstractNote={Significance}, number={52}, journal={PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}, author={Vannucci, Aaron K. and Alibabaei, Leila and Losego, Mark D. and Concepcion, Javier J. and Kalanyan, Berc and Parsons, Gregory N. and Meyer, Thomas J.}, year={2013}, month={Dec}, pages={20918–20922} }
 @article{kalanyan_oldham_sweet_parsons_2013, title={Highly Conductive and Flexible Nylon-6 Nonwoven Fiber Mats Formed using Tungsten Atomic Layer Deposition}, volume={5}, ISSN={1944-8244 1944-8252}, url={http://dx.doi.org/10.1021/AM401095R}, DOI={10.1021/am401095r}, abstractNote={Low-temperature vapor-phase tungsten atomic layer deposition (ALD) using WF6 and dilute silane (SiH4, 2% in Ar) can yield highly conductive coatings on nylon-6 microfiber mats, producing flexible and supple nonwovens with conductivity of ∼1000 S/cm. We find that an alumina nucleation layer, reactant exposure, and deposition temperature all influence the rate of W mass uptake on 3D fibers, and film growth rate is calibrated using high surface area anodic aluminum oxide. Transmission electron microscopy (TEM) reveals highly conformal tungsten coatings on nylon fibers with complex "winged" cross-section. Using reactant gas "hold" sequences during the ALD process, we conclude that reactant species can transport readily to reactive sites throughout the fiber mat, consistent with conformal uniform coverage observed by TEM. The conductivity of 1000 S/cm for the W-coated nylon is much larger than found in other conductive nonwovens. We also find that the nylon mats maintain 90% of their conductivity after being flexed around cylinders with radii as small as 0.3 cm. Metal ALD coatings on nonwovens make possible the solvent-free functionalization of textiles for electronic applications.}, number={11}, journal={ACS Applied Materials & Interfaces}, publisher={American Chemical Society (ACS)}, author={Kalanyan, Berç and Oldham, Christopher J. and Sweet, William J., III and Parsons, Gregory N.}, year={2013}, month={May}, pages={5253–5259} }
 @article{kalanyan_losego_oldham_parsons_2013, title={Low-Temperature Atomic Layer Deposition of Tungsten using Tungsten Hexafluoride and Highly-diluted Silane in Argon}, volume={19}, ISSN={["0948-1907"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000320470300013&KeyUID=WOS:000320470300013}, DOI={10.1002/cvde.201307053}, abstractNote={Abstract}, number={4-6}, journal={CHEMICAL VAPOR DEPOSITION}, author={Kalanyan, Berc and Losego, Mark D. and Oldham, Christopher J. and Parsons, Gregory N.}, year={2013}, month={Jun}, pages={161–166} }
 @article{alibabaei_brennaman_norris_kalanyan_song_losego_concepcion_binstead_parsons_meyer_2013, title={Solar water splitting in a molecular photoelectrochemical cell}, volume={110}, ISSN={["0027-8424"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000328061700026&KeyUID=WOS:000328061700026}, DOI={10.1073/pnas.1319628110}, abstractNote={Significance}, number={50}, journal={PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}, author={Alibabaei, Leila and Brennaman, M. Kyle and Norris, Michael R. and Kalanyan, Berc and Song, Wenjing and Losego, Mark D. and Concepcion, Javier J. and Binstead, Robert A. and Parsons, Gregory N. and Meyer, Thomas J.}, year={2013}, month={Dec}, pages={20008–20013} }
 @article{peng_kalanyan_hoertz_miller_kim_hanson_alibabaei_liu_meyer_parsons_et al._2013, title={Solution-Processed, Antimony-Doped Tin Oxide Colloid Films Enable High-Performance TiO2 Photoanodes for Water Splitting}, volume={13}, ISSN={["1530-6992"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000317549300020&KeyUID=WOS:000317549300020}, DOI={10.1021/nl3045525}, abstractNote={Photoelectrochemical (PEC) water splitting and solar fuels hold great promise for harvesting solar energy. TiO2-based photoelectrodes for water splitting have been intensively investigated since 1972. However, solar-to-fuel conversion efficiencies of TiO2 photoelectrodes are still far lower than theoretical values. This is partially due to the dilemma of a short minority carrier diffusion length, and long optical penetration depth, as well as inefficient electron collection. We report here the synthesis of TiO2 PEC electrodes by coating solution-processed antimony-doped tin oxide nanoparticle films (nanoATO) on FTO glass with TiO2 through atomic layer deposition. The conductive, porous nanoATO film-supported TiO2 electrodes, yielded a highest photocurrent density of 0.58 mA/cm(2) under AM 1.5G simulated sunlight of 100 mW/cm(2). This is approximately 3× the maximum photocurrent density of planar TiO2 PEC electrodes on FTO glass. The enhancement is ascribed to the conductive interconnected porous nanoATO film, which decouples the dimensions for light absorption and charge carrier diffusion while maintaining efficient electron collection. Transient photocurrent measurements showed that nanoATO films reduce charge recombination by accelerating transport of photoelectrons through the less defined conductive porous nanoATO network. Owing to the large band gap, scalable solution processed porous nanoATO films are promising as a framework to replace other conductive scaffolds for PEC electrodes.}, number={4}, journal={NANO LETTERS}, author={Peng, Qing and Kalanyan, Berc and Hoertz, Paul G. and Miller, Andrew and Kim, Do Han and Hanson, Kenneth and Alibabaei, Leila and Liu, Jie and Meyer, Thomas J. and Parsons, Gregory N. and et al.}, year={2013}, month={Apr}, pages={1481–1488} }
 @article{hanson_losego_kalanyan_ashford_parsons_meyer_2013, title={Stabilization of [Ru(bpy)(2)(4,4 '-(PO3H2)bpy)](2+) on Mesoporous TiO2 with Atomic Layer Deposition of Al2O3}, volume={25}, ISSN={["0897-4756"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000313303400002&KeyUID=WOS:000313303400002}, DOI={10.1021/cm303172w}, abstractNote={ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTStabilization of [Ru(bpy)2(4,4′-(PO3H2)bpy)]2+ on Mesoporous TiO2 with Atomic Layer Deposition of Al2O3Kenneth Hanson†, Mark D. Losego‡, Berç Kalanyan‡, Dennis L. Ashford†, Gregory N. Parsons*‡, and Thomas J. Meyer*†View Author Information† Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States‡ Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States*E-mail: [email protected] (G.N.P.); [email protected] (T.J.M.).Cite this: Chem. Mater. 2013, 25, 1, 3–5Publication Date (Web):December 7, 2012Publication History Received1 October 2012Revised6 December 2012Published online18 December 2012Published inissue 8 January 2013https://doi.org/10.1021/cm303172wCopyright © 2012 American Chemical SocietyRequest reuse permissionsArticle Views2686Altmetric-Citations89LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Atomic layer deposition,Chromophores,Desorption,Kinetic parameters,Oxides Get e-Alerts}, number={1}, journal={CHEMISTRY OF MATERIALS}, author={Hanson, Kenneth and Losego, Mark D. and Kalanyan, Berc and Ashford, Dennis L. and Parsons, Gregory N. and Meyer, Thomas J.}, year={2013}, month={Jan}, pages={3–5} }
 @article{hanson_losego_kalanyan_parsons_meyer_2013, title={Stabilizing Small Molecules on Metal Oxide Surfaces Using Atomic Layer Deposition}, volume={13}, ISSN={["1530-6992"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000326356300035&KeyUID=WOS:000326356300035}, DOI={10.1021/nl402416s}, abstractNote={Device lifetimes and commercial viability of dye-sensitized solar cells (DSSCs) and dye-sensitized photoelectrosynthesis cells (DSPECs) are dependent on the stability of the surface bound molecular chromophores and catalysts. Maintaining the integrity of the solution-metal oxide interface is especially challenging in DSPECs for water oxidation where it is necessary to perform high numbers of turnovers, under irradiation in an aqueous environment. In this study, we describe the atomic layer deposition (ALD) of TiO2 on nanocrystalline TiO2 prefunctionalized with the dye molecule [Ru(bpy)2(4,4'-(PO3H2)bpy)](2+) (RuP) as a strategy to stabilize surface bound molecules. The resulting films are over an order of magnitude more photostable than untreated films and the desorption rate constant exponentially decreases with increased thickness of ALD TiO2 overlayers. However, the injection yield for TiO2-RuP with ALD TiO2 also decreases with increasing overlayer thickness. The combination of decreased injection yield and 95% quenched emission suggests that the ALD TiO2 overlayer acts as a competitive electron acceptor from RuP*, effectively nonproductively quenching the excited state. The ALD TiO2 also increases back electron transfer rates, relative to the untreated film, but is independent of overlayer thickness. The results for TiO2-RuP with an ALD TiO2 overlayer are compared with similar films having ALD Al2O3 overlayers.}, number={10}, journal={NANO LETTERS}, author={Hanson, Kenneth and Losego, Mark D. and Kalanyan, Berc and Parsons, Gregory N. and Meyer, Thomas J.}, year={2013}, month={Oct}, pages={4802–4809} }
 @article{arpin_losego_cloud_ning_mallek_sergeant_zhu_yu_kalanyan_parsons_et al._2013, title={Three-dimensional self-assembled photonic crystals with high temperature stability for thermal emission modification}, volume={4}, ISSN={["2041-1723"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000326472200019&KeyUID=WOS:000326472200019}, DOI={10.1038/ncomms3630}, abstractNote={Selective thermal emission in a useful range of energies from a material operating at high temperatures is required for effective solar thermophotovoltaic energy conversion. Three-dimensional metallic photonic crystals can exhibit spectral emissivity that is modified compared with the emissivity of unstructured metals, resulting in an emission spectrum useful for solar thermophotovoltaics. However, retention of the three-dimensional mesostructure at high temperatures remains a significant challenge. Here we utilize self-assembled templates to fabricate high-quality tungsten photonic crystals that demonstrate unprecedented thermal stability up to at least 1,400 °C and modified thermal emission at solar thermophotovoltaic operating temperatures. We also obtain comparable thermal and optical results using a photonic crystal comprising a previously unstudied material, hafnium diboride, suggesting that refractory metallic ceramic materials are viable candidates for photonic crystal-based solar thermophotovoltaic devices and should be more extensively studied.}, journal={NATURE COMMUNICATIONS}, author={Arpin, Kevin A. and Losego, Mark D. and Cloud, Andrew N. and Ning, Hailong and Mallek, Justin and Sergeant, Nicholas P. and Zhu, Linxiao and Yu, Zongfu and Kalanyan, Berc and Parsons, Gregory N. and et al.}, year={2013}, month={Oct} }
 @article{kim_koo_jur_woodroof_kalanyan_lee_devine_parsons_2012, title={Stable anatase TiO2 coating on quartz fibers by atomic layer deposition for photoactive light-scattering in dye-sensitized solar cells}, volume={4}, ISSN={["2040-3372"]}, url={http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000306324000056&KeyUID=WOS:000306324000056}, DOI={10.1039/c2nr30939d}, abstractNote={Quartz fibers provide a unique high surface-area substrate suitable for conformal coating using atomic layer deposition (ALD), and are compatible with high temperature annealing. This paper shows that the quartz fiber composition stabilizes ALD TiO(2) in the anatase phase through TiO(2)-SiO(2) interface formation, even after annealing at 1050 °C. When integrated into a dye-sensitized solar cell, the TiO(2)-coated quartz fiber mat improves light scattering performance. Results also confirm that annealing at high temperature is necessary for better photoactivity of ALD TiO(2), which highlights the significance of quartz fibers as a substrate. The ALD TiO(2) coating on quartz fibers also boosts dye adsorption and photocurrent response, pushing the overall efficiency of the dye-cells from 6.5 to 7.4%. The mechanisms for improved cell performance are confirmed using wavelength-dependent incident photon to current efficiency and diffuse light scattering results. The combination of ALD and thermal processing on quartz fibers may enable other device structures for energy conversion and catalytic reaction applications.}, number={15}, journal={NANOSCALE}, author={Kim, Do Han and Koo, Hyung-Jun and Jur, Jesse S. and Woodroof, Mariah and Kalanyan, Berc and Lee, Kyoungmi and Devine, Christina K. and Parsons, Gregory N.}, year={2012}, pages={4731–4738} }