Efficient Blue-Colored Solid-State Dye-Sensitized Solar Cells: Enhanced Charge Collection by Using an in Situ Photoelectrochemically Generated Conducting Polymer Hole Conductor

Zhang, JinbaoVlachopoulos, NickHao, YanHolcombe, Thomas W.Boschloo, GerritJohansson, Erik M. J.Graetzel, MichaelHagfeldt, Anders2016-10-182016-10-182016-10-18201610.1002/cphc.201600064https://infoscience.epfl.ch/handle/20.500.14299/129982WOS:000381177600006A high power conversion efficiency (PCE) of 5.5% was achieved by efficiently incorporating a diketopyrrolopyrrole-based dye with a conducting polymer poly(3,4-ethylenediothiophene) (PEDOT) hole-transporting material (HTM) that was formed in situ, compared with a PCE of 2.9% for small molecular spiroOMeTAD-based solid-state dye solar cells (sDSCs). The high PCE for PEDOT-based sDSCs is mainly attributed to the significantly enhanced charge-collection efficiency, as a result of the three-order-of-magnitude higher hole conductivity (0.53 Scm(-1)) compared with that of the widely used low molecular weight HTM spiro-OMeTAD (3.5 x 10(-4) Scm(-1)).dyes/pigmentshole-transporting materialPEDOTphotochemistrypolymerizationEfficient Blue-Colored Solid-State Dye-Sensitized Solar Cells: Enhanced Charge Collection by Using an in Situ Photoelectrochemically Generated Conducting Polymer Hole Conductortext::journal::journal article::research article