nz9b02836_si_001.pdf (303.68 kB)
Thin-Film Solar Cells with 19% Efficiency by Thermal Evaporation of CdSe and CdTe
journal contribution
posted on 2020-02-21, 22:13 authored by Tursun Ablekim, Joel N. Duenow, Xin Zheng, Helio Moutinho, John Moseley, Craig L. Perkins, Steven W. Johnston, Patrick O’Keefe, Eric Colegrove, David S. Albin, Matthew O. Reese, Wyatt K. MetzgerCdTe-based solar cells exhibiting
19% power conversion efficiency
were produced using widely available thermal evaporation deposition
of the absorber layers on SnO2-coated glass with or without
a transparent MgZnO buffer layer. Evaporating CdSe and CdTe sequentially
by thermal evaporation and subsequent CdCl2 annealing establishes
efffective CdSeTe band grading as well as dense, large-grain films.
These results show that high-performance II–VI photovoltaics
can be made by inexpensive, commercially available evaporation systems
without the need to build customized equipment, enabling CdTe photovoltaics
research and manufacturing to be more accessible to the broader photovoltaics
community.