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Efficient Infrared-to-Visible Upconversion with Subsolar Irradiance
Open accessAbstract
Abstract Third generation photovoltaics are inexpensive modules that promise power conversion efficiencies exceeding the thermodynamic Shockley–Queisser limit, perhaps by using up- or down-converters, intermediate band solar cells, tandem cells, hot carrier devices, or multiexciton generation. Here, we report the efficient upconversion of infrared to visible light at excitation densities below the solar flux. Colloidally synthesized core–shell lead sulfide–cadmium sulfide nanocrystals in combination with tetracene derivatives absorb near-infrared light and emit visible light at 560 nm with an upconversion quantum yield (QY) of 8.4 ± 1.0%, which is a factor of 4 lower than the maximum upconversion QY possible. This is achieved with 808 nm cw excitation at 3.2 mW/cm2, approximately three times lower than the available solar flux. The molecular and nanocrystal engineering here paves the way toward utilizing this hybrid upconversion platform in photovoltaics, photodetectors and photocatalysis.
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The energy gap law for radiationless transitions in large molecules
Englman, R., & Jortner, J. (1970) · Molecular Physics · doi:10.1080/00268977000100171 · Cited by 2,778
Cited by
Photoredox catalysis using infrared light via triplet fusion upconversion
Ravetz, B. D., Pun, A. B., Churchill, E. M., Congreve, D. N., Rovis, T., & Campos, L. M. (2019) · Nature · doi:10.1038/s41586-018-0835-2 · Cited by 676
Rational design of yolk–shell nanostructures for photocatalysis
Li, A., Zhu, W., Li, C., Wang, T., & Gong, J. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00711j · Cited by 346
Metadata
- Authors
- Mahboub, M., Huang, Z., & Tang, M. L.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-10-31
- Volume
- 16
- Issue
- 11
- Pages
- 7169-7175
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2543413148
- Cited by
- 188
- References
- 1
- FWCI
- 9.02
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Mahboub, M., Huang, Z., & Tang, M. L. (2016). Efficient Infrared-to-Visible Upconversion with Subsolar Irradiance. Nano Letters. https://doi.org/10.1021/acs.nanolett.6b03503
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