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Perovskite-Silicon Tandem Based Photoelectrochemical Systems for Efficient Solar Hydrogen Generation
A. Sharma, S. Karuturi, D. Zhang, F. Beck, K.R. Catchpole
PV Applications, Integration and Storage
Subtopic: Energy System Integration
Event: 38th European Photovoltaic Solar Energy Conference and Exhibition
Session: 6CO.13.1
ISBN: 3-936338-78-7
0,00 EUR
Document(s): presentation


Direct Solar hydrogen generation is a promising method for renewable hydrogen generation, where solar energy drives the generation of hydrogen and oxygen by molecular dissociation of water on a catalytic/semiconductor surface. Despite an enormous amount of work over the last few decades, direct solar hydrogen generation has not yet been implemented on large scale. Realizing solar-to-hydrogen (STH) efficiencies close to 20% using low cost systems is a critical step in ensuring the commercial viability of large scale solar hydrogen generation [1]. We have recently demonstrated high-efficiency, stand-alone solar hydrogen generation using perovskite- silicon tandem photo absorbers in a photoelectrochemical cell (Fig. 1(a)). We developed a p+nn+Si/Ti/Pt photocathode with an applied bias photon-to-current efficiency (ABPE) of 14.1%, with a stability of three days under continuous illumination. Solar to hydrogen conversion efficiency of 17.6% is achieved on combining with semitransparent perovskite solar cell of optimised bandgap and IrRu anode.