Designing Efficient Solar-Driven Hydrogen Evolution Photocathodes Using Semitransparent MoQxCly(Q = S, Se) Catalysts on Si Micropyramids
Shearer, Melinda J.
Hamers, Robert J.
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
KAUST Solar Center (KSC)
Physical Sciences and Engineering (PSE) Division
Division of Computer; Electrical and Mathematical Sciences and Engineering; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
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Abstract© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Silicon micropyramids with n+pp+ junctions are demonstrated to be efficient absorbers for integrated solar-driven hydrogen production systems enabling significant improvements in both photocurrent and onset potential. When conformally coated with MoSxCly, a catalyst that has excellent catalytic activity and high optical transparency, the highest photocurrent density for Si-based photocathodes with earth-abundant catalysts is achieved.
CitationDing Q, Zhai J, Cabán-Acevedo M, Shearer MJ, Li L, et al. (2015) Designing Efficient Solar-Driven Hydrogen Evolution Photocathodes Using Semitransparent MoQxCly(Q = S, Se) Catalysts on Si Micropyramids. Advanced Materials 27: 6511–6518. Available: http://dx.doi.org/10.1002/adma.201501884.
SponsorsThis research was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Award No. DE-FG02-09ER46664. S.J. also thanks UW-Madison H. I. Romnes Faculty Fellowship for support. M.C. thanks the NSF Graduate Research Fellowship for support. The authors thank Mr. Donghyeon Kang and Prof. Kyoung-Shin Choi for their assistance with the GC-MS measurements.
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