Listar por autoría "4d2eeedd-e6bd-458d-8bde-fd9d87a3eaf0"
Mostrando ítems 1-14 de 14
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Chemical Effects of Tin Oxide Nanoparticles in Polymer Electrolytes-Based Dye-Sensitized Solar Cells
Chae, Hwaseok; Song, Donghoon; Lee, Yong-Gun; Son, Taewook; Cho, Woohyung; Pyun, Bum; Kim, Tea-Yon; Lee, Jung Hyun; Fabregat-Santiago, Francisco; Bisquert, Juan; Kang, Yong Soo American Chemical Society (2014-02)The effects on the photovoltaic performance of the incorporation of SnO2 nanoparticles into the polymer of a solid-state dye-sensitized solar cell (DSC) based on the poly(ethylene oxide)/poly(ethylene glycol) dimethyl ether ... -
Effect of the chromophores structures on the performance of solid-state dye sensitized solar cells
Tian, Haining; Soto, Andrea; Xu, Bo; Sun, Licheng; Hagfeldt, Anders; Fabregat-Santiago, Francisco; Mora-Sero, Ivan; Kang, Yong Soo; Bisquert, Juan; Barea, Eva M World Scientific Publishing (2014)The effect of metal-free chromophores on dye-sensitized solar cell performance is investigated. Solid state dye-sensitized solar cells (ssDSCs) using different molecular sensitizers based on triphenylamine (TPA) with ... -
Electron-Transfer Kinetics through Interfaces between Electron-Transport and Ion-Transport Layers in Solid-State Dye-Sensitized Solar Cells Utilizing Solid Polymer Electrolyte
Cho, Woohyung; Lim, Jongchul; Kim, Tea-Yon; Kim, Young Rae; Song, Donghoon; Park, Taiho; Fabregat-Santiago, Francisco; Bisquert, Juan; Kang, Yong Soo American Chemical Society (2016)The origin of the differences between the performance parameters found for dye-sensitized solar cells (DSCs) using liquid and poly(ethylene oxide)-based solid polymer electrolytes has been investigated. Limitations associated ... -
Imidazolium Iodide-Doped PEDOT Nanofibers as Conductive Catalysts for Highly Efficient Solid-State Dye-Sensitized Solar Cells Employing Polymer Electrolyte
Kim, Tea-Yon; Wei, Wei; Lee, Tae Kyung; Kim, Byung Su; Park, Seul Chan; Lee, Sungjin; Suh, Eui Hyun; Jang, Jaeyoung; Bisquert, Juan; Kang, Yong Soo American Chemical Society (2017)The electrical conductivity and catalytic activity of nanofibrous poly(3,4-ethylenedioxythiophene)s (PEDOT NFs) was improved by redoping with dimethyl imidazolium iodide (DMII) as a charge transfer facilitator. Addition ... -
Interfacial Engineering at Quantum Dot-Sensitized TiO2 Photoelectrodes for Ultrahigh Photocurrent Generation
Kim, Tea-Yon; Kim, Byung Su; Oh, Jong Gyu; Park, Seul Chan; Jang, Jaeyoung; Hamann, Thomas; Kang, Young Soo; Bang, Jin Ho; Giménez Juliá, Sixto; Kang, Yong Soo American Chemical Society (2021-02-01)Metal oxide semiconductor/chalcogenide quantum dot (QD) heterostructured photoanodes show photocurrent densities >30 mA/cm2 with ZnO, approaching the theoretical limits in photovoltaic (PV) cells. However, comparative ... -
Interfacial engineering of quantum dot-sensitized TiO2 fibrous electrodes for futuristic photoanodes in photovoltaic applications
Sudhagar, P.; González Pedro, Victoria; Mora-Sero, Ivan; Fabregat-Santiago, Francisco; Bisquert, Juan; Kang, Yong Soo Royal Society of Chemistry (2012)Herein we report generic surface treatment approaches to improve the electronic interfaces of quantum dot-sensitized TiO2 fiber electrodes, thereby promoting their photoanode performance. Highly dense, continuous and ... -
Origin of high open-circuit voltage in solid state dye-sensitized solar cells employing polymer electrolyte
Kim, Tea-Yon; Song, Donghoon; Barea, Eva M; Lee, Jung Hyun; Kim, Young Rae; Cho, Woohyung; Lee, Sungjin; Rahman, Mohammed M.; Bisquert, Juan; Kang, Yong Soo Elsevier (2016-10)Herein, the energy level alignment and electron recombination kinetics in solid state dye-sensitized solar cells (DSCs) employing a solid polymer electrolyte (SPE) have been quantitatively characterized. In order to determine ... -
Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar Cells
Juarez-Perez, Emilio J.; S. Sánchez, Rafael; Badia Bou, Laura; Garcia-Belmonte, Germà; Kang, Yong Soo; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2014-06)Organic-inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time. We have found a giant ... -
Plasmon-enhanced photocurrent in quasi-solid-state dye-sensitized solar cells by the inclusion of gold/silica core–shell nanoparticles in a TiO2 photoanode
Wooh, Sanghyuk; Lee, Yong-Gun; Tahir, Muhammad Nawaz; Song, Donghoon; Meister, Michael; Laquai, Frédéric; Tremel, Wolfgang; Bisquert, Juan; Kang, Yong Soo; Char, Kookheon Royal Society of Chemistry (2013-09)Direct evidence of the effects of the localized surface plasmon resonance (LSPR) of gold nanoparticles (Au NPs) in TiO2 photoanodes on the performance enhancement in quasi-solid-state dye-sensitized solar cells (DSCs) is ... -
Properties of Contact and Bulk Impedances in Hybrid Lead Halide Perovskite Solar Cells Including Inductive Loop Elements
Guerrero, Antonio; Garcia-Belmonte, Germà; Mora-Sero, Ivan; Bisquert, Juan; Kang, Yong Soo; Jacobsson, T. Jesper; Correa-Baena, Juan-Pablo; Hagfeldt, Anders American Chemical Society (2016)Impedance spectroscopy offers access to all the different electronic and ionic processes taking place simultaneously in an operating solar cell. To date, its use on perovskite solar cells has been challenging because of ... -
Quantum Dot Based Heterostructures for Unassisted Photoelectrochemical Hydrogen Generation
Rodenas, Pau; Song, Taeseup; Sudhagar, P.; Marzari, Gabriela; Han, Hyungkyu; Badia Bou, Laura; Giménez Juliá, Sixto; Fabregat-Santiago, Francisco; Mora-Sero, Ivan; Bisquert, Juan; Paik, Ungyu; Kang, Yong Soo Wiley (2013-02)TiO2 hollow nanowires (HNWs) and nanoparticles (NPs) constitute promising architectures for QDs sensitized photoanodes for H2 generation. We sensitize these structures with CdS/CdSe quantum dots by two different methods ... -
Slow dynamic processes in lead halide perovskite solar cells. Characteristic times and hysteresis
S. Sánchez, Rafael; González Pedro, Victoria; Lee, Jin Wook; Park, Nam-Gyu; Kang, Yong Soo; Mora-Sero, Ivan; Bisquert, Juan American Chemical Society (2014-06)Characteristic times of perovskite solar cells (PSCs) have been measured by different techniques: transient photovoltage decay, transient photoluminescence, and impedance spectroscopy. A slow dynamic process is detected ... -
Three dimensional-TiO2 nanotube array photoanode architectures assembled on a thin hollow nanofibrous backbone and their performance in quantum dot-sensitized solar cells
Han, Hyungkyu; Sudhagar, P.; Song, Taeseup; Jeon, Yeryung; Mora-Sero, Ivan; Fabregat-Santiago, Francisco; Bisquert, Juan; Kang, Yong Soo; Paik, Ungyu Royal Society of Chemistry (2013-02-18)Facile synthesis of TiO2 nanotube branched (length [similar]0.5 μm) thin hollow-nanofibers is reported. The hierarchical three dimensional photoanodes (H-TiO2-NFs) (only [similar]1 μm thick) demonstrate their excellent ... -
Triumphing over Charge Transfer Limitations of PEDOT Nanofiber Reduction Catalyst by 1,2-Ethanedithiol Doping for Quantum Dot Solar Cells
Kim, Tea-Yon; Lee, Tae Kyung; Kim, Byung Su; Park, Seul Chan; Lee, Sungjin; Im, Seung Soon; Bisquert, Juan; Kang, Yong Soo American Chemical Society (2017)Charge transfer between a conducting polymer-based counter electrode (CE) and a polysulfide (S2–/Sn2–) electrolyte mediator is a key limitation to improvements of solar energy conversion efficiency (ECE) in quantum-dot-sensitized ...