Journal
ACS ENERGY LETTERS
Volume 1, Issue 3, Pages 583-588Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.6b00324
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Funding
- National Science Foundation [CHE-1230246, DMR-1534686]
- NSF project [CBET-1433401]
- National Science Foundation, Division of Chemical, Bioengineering, Environmental, and Transport Systems (CBET)
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Fuel Cell Technologies Office
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1433401] Funding Source: National Science Foundation
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Exploiting renewable solar energy in terms of solar driven water splitting and photovoltaic devices provides clean and efficient paths to overcome diminishing fossil fuel resources and the greenhouse effect. Here, a state-of-the-art earth-abundant BaCu2Sn-(Se0.83S0.17)(4) (BCTSSe) thin film has been presented as a promising top-cell absorber in tandem photoelectrochemical water splitting and photovoltaic conversion devices. Our BCTSSe thin film exhibits a direct bandgap of 1.85 eV with strong optical absorption coefficients (a > 10(4) cm(-1)). Without extensive interface and electrode optimization, our best BCTS photoelectrochemical cell showed a photocurrent of 5 mA cm(-2) at 0 V vs reversible hydrogen electrode. Moreover, our best-performing BCTSSe prototype photovoltaic cell with a configuration of fluorine-doped SnO2 (FTO, back contact)/BCTSSe/CdS/ZnO/alurninum doped ZnO (AZO, front contact) has achieved an efficiency of 1.57%.
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