期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 15, 期 1, 页码 244-253出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ee01778k
关键词
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资金
- National Natural Science Foundation of China [21875081, 91733301, 51972251]
- Chinese National 1000-Talent-Plan program
- Foundation of State Key Laboratory of Coal Conversion [J18-19-913]
- Frontier Project of the Application Foundation of Wuhan Science and Technology Plan Project [2020010601012202]
Perovskite solar modules achieved significant progress in stability and efficiency through multifunctional interface modulation, manufactured with advanced processes to maintain high performance in both lab and real-world environments.
Perovskite solar cells (PSCs) are one of the most prominent photovoltaic technologies. However, PSCs still encounter great challenges of scaling up from laboratorial cells to industrial modules without serious performance loss while maintaining excellent long-term stability, owing to the resistive losses and extra instability factors that scale quadratically with the device area. Here, we manifest a concept of multifunctional interface modulation for highly efficient and stable perovskite solar modules (PSMs). The advisably designed multifunctional interface modulator GO/QD crosslinks the CsPbBr3 perovskite quantum dots (QDs) on the conductive graphene oxide (GO) surfaces, which significantly improve charge transport and energy band alignment at the perovskite/hole transporting layer interface to reduce the charge transport resistance while passivating the surface defects of the perovskite to inhibit carrier recombination resistive losses. Moreover, the GO/QD interlayer acts as a robust permeation barrier that modulates the undesirable interfacial ion and moisture diffusion. Consequently, we adopt a scalable vacuum flash-assisted solution processing (VASP) method to achieve a certified stabilized power output efficiency of 17.85% (lab-measured champion efficiency of 18.55%) for the mini-modules. The encapsulated PSMs achieve over 90% of their initial efficiency after continuous operation under 1 sun illumination and the damp heat test at 85 degrees C, respectively.
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