Study of Se and Cl segregation in poly-crystalline CdSeTe
CdTe based thin film solar cells have shown to be competitive in terms of efficiency and low cost, but the polycrystalline structure and low minority carrier lifetime constrain CdTe based devices from reaching the theoretical efficiency limit. In this work, the effect of Se and Cl segregation in polycrystalline CdSeTe photovoltaic devices was studied. We demonstrated using two-photon time-resolved photoluminescence (TRPL) that the Se alloyed CdSeTe absorber layer shows high minority carrier lifetime, and used density functional theory (DFT) calculations to explain the origin of such high lifetime.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Solar Energy Technologies (SETO) - SunShot Initiative
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1873104
- Resource Relation:
- Conference: 46th IEEE Photovoltaic Specialists Conference, 06/16/19 - 06/21/19, Chicago, IL, USA
- Country of Publication:
- United States
- Language:
- English
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