Angular response of photonic crystal based dye sensitized solar cells

Herein we report an experimental analysis of the performance of photonic crystal based dye solar cells (PCDSCs) as the incident light angle moves away from the normal with respect to the cell surface. Nanoparticle multilayers operating at different wavelength ranges were coupled to the working electrode of a dye solar cell for this study. The interplay between optical and photovoltaic properties with the incident light angle is discussed.We demonstrate that an efficiency enhancement is attained for PC-DSCs at all angles measured, and that rational design of the photonic crystal back mirror leads to a reduction of the photocurrent losses related to the tilt angle of the cell, usually labeled as cosine losses. Angular variations of the cell transparency are also reported and discussed. These angular properties are relevant to the application of these solar devices in building integrated photovoltaics as potential window modules.European Research Council Spanish Ministry of Economy and Competitiveness MAT2011-23593 CSD2007-00007 Junta de Andalucia FQM3579 FQM5247The authors also thank the Unit of Information Resources for Research of the Spanish National Research Council (URICI-CSIC) for the co-financing of this publication in Open Access.Peer reviewe