Optical Design of perovskite Solar Cells

Hernán Míguez^a, Mauricio E. Calvo^a, Juan F. Galisteo-López^a, Miguel Anaya^a, Gabriel Lozano^a

NIPHO
Proceedings of Perovskite Thin Film Photovoltaics (ABXPV16)

Barcelona, Spain, 2016 March 3rd - 4th

Organizers: Emilio Palomares and Nam-Gyu Park

Oral, Gabriel Lozano, presentation 044
Publication date: 14th December 2015

In recent years the organic inorganic halide perovskite, CH3NH3PbI3, has attracted the attention of scientists in the field of photovoltaics due to the high conversion efficiency of light into electrical power that this material presents.[1] In this contribution we discuss different theoretical and experimental approaches to maximize light absorption in mesostructured thin perovskite films. In particular, semi-analytical models based on the transfer matrix method allow us to describe the spatial light distribution along PSC and to discriminate between productive and parasitic absorption, estimating the fraction of light captured by the different components integrating the cell.[2] Our work also provides a theoretical framework in which the optical response of solar cells integrating photonic enhancing components can be rationalized. Thanks to the theoretical designs, we are able to provide the cell with a wide color pallet, ranging from blue to red, which we actually realize by incorporating a one-dimensional photonic crystal inside the structure.[3]Alternatively, we demonstrate by means of numerical simulations that sunlight absorption enhancement of ~12% can be achieved in perovskite thin films by embedding plasmonic gold nanoparticles directly into the active layer.[4] In all cases, in-depth experimental analysis of the optical effects occurring in state-of-the-art systems supports our calculations.

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