Photo-Electrochemical Hydrogen Generation from Inverted Metamorphic Multijunction III-Vs
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Our goal is to improve solar-to-hydrogen (STH) efficiency from just over 10% to over 20% via novel tandem semiconductor materials and configurations. Our primary focus is to develop inverted metamorphic multijunction (IMM) III-V semiconductors that have bandgaps optimized for water splitting. We will also discuss measurement challenges in appraising STH efficiency, some of which are specific to tandem absorbers. Using more stringent measurement standards, we have confirmed 16.2% STH on our most advanced IMM devices.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Program (EE-3F)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1558579
- Report Number(s):
- NREL/CP-5900-68613
- Country of Publication:
- United States
- Language:
- English
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