Abstract
Hot carrier solar cells could achieve efficiencies exceeding the Shockley-Queisser limit by collecting hot carriers before they cool down. With the hot-phonon bottleneck effect, hot carrier collection may be favorable at high carrier densities in concentrator photovoltaics. In this work, utilizing the excellent thermal stability of a phthalocyanine (Pc) hole transport layer (HTL), we constructed a hot hole collecting HTL. A methylthiotriphenylamine-based SMePc achieved an extraction velocity of 78 900 cm s−1, corresponding to a collecting distance of ∼79 nm. With this HTL, an efficiency of 24.95% and certified efficiency of 24.43% are achieved under 1 sun illumination with over 3000 h operational stability in N2 (60 °C) and over 1000 h at 85 °C. With a solar concentrator, an increase in open-circuit voltage (VOC) above the theoretical cold carrier line is observed, and a record efficiency of 27.30% is achieved under 5.9 sun illumination for a single-junction perovskite solar cell. Our strategy demonstrated the potential application of high-efficiency hot carrier solar cells. © The Royal Society of Chemistry 2024.
| Original language | English |
|---|---|
| Pages (from-to) | 5080-5090 |
| Journal | Energy & Environmental Science |
| Volume | 17 |
| Issue number | 14 |
| Online published | 4 Jun 2024 |
| DOIs | |
| Publication status | Published - 21 Jul 2024 |
Funding
This work is supported by the Natural Science Foundation of Guangdong Province under contract number 2023A1515011145, Guangdong Major Project of Basic and Applied Basic Research (2023B0303000002), Guangdong Provincial University Science and Technology Program (grant no. 2023KTSCX119) and Shenzhen Science and Technology Innovation Commission under contract numbers JCYJ20220530114809022 and ZDSYS20220527171403009. Z.-X. Xu acknowledges support from the National Natural Science Foundation of China (no. 21975116), Major Program of Guangdong Basic and Applied Research (no. 2019B121205001 and 2019B030302009), and Shenzhen-Hong Kong-Macau Science and Technology Plan C (no. SGDX20210823104205034). M.C.B acknowledges support as part of the Center for Hybrid Organic Inorganic Semiconductor for Energy (CHOISE), an Energy Frontier Research Center funded by the Office of Basic Energy Sciences, Office of Science within the U.S. Department of Energy. This work was partially authored by the Alliance for Sustainable Energy, LLC, the manager and operator of the National Renewable Energy Laboratory for DOE under contract number DE-AC36-08GO28308. The views expressed in the Article do not necessarily represent the views of the DOE or U.S. Government. The U.S. Government retains the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes. We thank Daozeng Wang and Prof. Longbin Qiu for assistance with concentrator experiments.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
ESI Highly Cited Papers
- Highly Cited Paper 2026
ESI Highly Cited Paper Designation Date(s)
- 20260709
- 20260923
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