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Overcoming Efficiency Limitations of SnS‐Based Solar Cells
Abstract
Thin‐film solar cells are made by vapor deposition of Earth‐abundant materials: tin, zinc, oxygen and sulfur. These solar cells had previously achieved an efficiency of about 2%, less than 1/10 of their theoretical potential. Loss mechanisms are systematically investigated and mitigated in solar cells based on p‐type tin monosulfide, SnS, absorber layers combined with n‐type zinc oxysulfide, Zn(O,S) layers that selectively transmit electrons, but block holes. Recombination at grain boundaries is reduced by annealing the SnS films in H 2 S to form larger grains with fewer grain boundaries. Recombination near the p‐SnS/n‐Zn(O,S) junction is reduced by inserting a few monolayers of SnO 2 between these layers. Recombination at the junction is also reduced by adjusting the conduction band offset by tuning the composition of the Zn(O,S), and by reducing its free electron concentration with nitrogen doping. The resulting cells have an efficiency over 4.4%, which is more than twice as large as the highest efficiency obtained previously by solar cells using SnS absorber layers.
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Cited by
Bao, J., Zhang, X., Fan, B., Zhang, J., Zhou, M., Yang, W., Hu, X., Wang, H., Pan, B., & Xie, Y. (2015) · Angewandte Chemie International Edition · doi:10.1002/anie.201502226 · Cited by 1,428
Vapor transport deposition of antimony selenide thin film solar cells with 7.6% efficiency
Wen, X., Chen, C., Lu, S., Li, K., Kondrotas, R., Zhao, Y., Chen, W., Gao, L., Wang, C., Zhang, J., et al. (2018) · Nature Communications · doi:10.1038/s41467-018-04634-6 · Cited by 580
Metadata
- Authors
- Sinsermsuksakul, P., Sun, L., Lee, S. W., Park, H. H., Kim, S. B., Yang, C., & Gordon, R. G.
- Venue
- Advanced Energy Materials
- Publisher
- Wiley
- Published
- 2014-06-20
- Volume
- 4
- Issue
- 15
- ISSN
- 1614-6832 (ISSN-L)
- 1614-6840
- OpenAlex
- W2095354333
- Cited by
- 621
- References
- 0
- FWCI
- 31.84
- Type
- journal article
- Language
- en
- Open access
- closed
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- Sinsermsuksakul, P., Sun, L., Lee, S. W., Park, H. H., Kim, S. B., Yang, C., & Gordon, R. G. (2014). Overcoming Efficiency Limitations of SnS‐Based Solar Cells. Advanced Energy Materials. https://doi.org/10.1002/aenm.201400496
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