000204156 001__ 204156
000204156 005__ 20181203023721.0
000204156 0247_ $$2doi$$a10.1002/aenm.201400510
000204156 022__ $$a1614-6832
000204156 02470 $$2ISI$$a000344363400016
000204156 037__ $$aARTICLE
000204156 245__ $$aHigh-Surface-Area Porous Platinum Electrodes for Enhanced Charge Transfer
000204156 260__ $$bWiley-V C H Verlag Gmbh$$c2014$$aWeinheim
000204156 269__ $$a2014
000204156 300__ $$a8
000204156 336__ $$aJournal Articles
000204156 520__ $$aCobalt-based electrolytes are highly tunable and have pushed the limits of dye-sensitized solar cells, enabling higher open-circuit voltages and new record efficiencies. However, the performance of these electrolytes and a range of other electrolytes suffer from slow electron transfer at platinum counter electrodes. High surface area platinum would enhance catalysis, but pure platinum structures are too expensive in practice. Here, a material-efficient host-guest architecture is developed that uses an ultrathin layer of platinum deposited upon an electrically conductive scaffold, niobium-doped tin oxide (NTO). This nanostructured composite enhances the counter electrode performance of dye-sensitized solar cells (DSCs) using a (CoBPY3)-B-(II/III) electrolyte with an increased fill factor and power conversion efficiency (11.26%), compared to analogous flat films. The modular strategy is elaborated by integrating a light scattering layer onto the counter electrode to reflect unabsorbed light back to the photoanode to improve the short-circuit current density and power conversion efficiency.
000204156 700__ $$uSwiss Fed Labs Mat Sci & Technol, Empa, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland$$aHu, Yelin
000204156 700__ $$0244230$$g198812$$uSwiss Fed Inst Technol, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland$$aYella, Aswani
000204156 700__ $$uSwiss Fed Inst Technol, Inst Mat, Supramol Nanomat & Interfaces Lab, CH-1015 Lausanne, Switzerland$$aGuldin, Stefan
000204156 700__ $$0246932$$g174152$$uSwiss Fed Inst Technol, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland$$aSchreier, Marcel
000204156 700__ $$uSwiss Fed Inst Technol, Inst Mat, Supramol Nanomat & Interfaces Lab, CH-1015 Lausanne, Switzerland$$aStellacci, Francesco
000204156 700__ $$g105292$$uSwiss Fed Inst Technol, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland$$aGraetzel, Michael$$0240191
000204156 700__ $$aStefik, Morgan$$g208642$$0245126
000204156 773__ $$j4$$tAdvanced Energy Materials$$k14
000204156 909C0 $$xU10101$$0252060$$pLPI
000204156 909CO $$pSB$$particle$$ooai:infoscience.tind.io:204156
000204156 917Z8 $$x207176
000204156 937__ $$aEPFL-ARTICLE-204156
000204156 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000204156 980__ $$aARTICLE