期刊
ACS OMEGA
卷 7, 期 20, 页码 16877-16883出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c06108
关键词
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资金
- National Natural Science Foundation of China [22109179]
- Natural Science Foundation of Shandong Province [ZR2017MB006, ZR2017ZB0315, ZR2017BB027]
- Fundamental Research Funds for the Central Universities [18CX02052A, 18CX02053A, 20CX06004A]
- Talent Introduction Program of China University of Petroleum (East China) [ZX20190162]
- Yankuang Group 2019 Science and Technology Program [YKKJ2019AJ05JG-R60]
- Taishan Scholar program of Shandong Province [tsnq201909069, ts201712019]
By using a pressure-assisted method to improve the contact at the perovskite/carbon interface, the efficiency of carbon-based solar cells can be enhanced. The hot-pressing process shows a significant performance improvement for large-scale devices.
Due to the low cost and printable nature of the carbon paste, carbon-based perovskite solar cells (PSCs) are attractive for real application. However, the poor contact at the perovskite/carbon interface obviously hinders the achievable fill factor of the carbon-based PSCs. In this work, we introduce a pressure-assisted method to improve the contact at the perovskite/carbon interface. Via modulating the applied pressure, the power conversion efficiency of CsPbBr3 PSCs (small area) can be improved from the initial 7.40% to 7.95% (pressing) and 8.34% (hot-pressing). A more remarkable feature is that the hot-pressing process boosted the performance from 5.1% (normal) to 6.9% (hot-pressing assisted) of large-scale (0.5 cm(2)) devices, a more than 30% enhancement. Finally, the hot-pressing method introduced in this work shows great prospects for improving the efficiency of carbon-based PSCs, especially large-scale PSCs.
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