期刊
ADVANCED FUNCTIONAL MATERIALS
卷 32, 期 14, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202110139
关键词
defect passivation; eco-friendly device; functionalized fullerene; lead leakage prevention; perovskite solar cells
类别
资金
- National Natural Science Foundation of China [51902110, 51802102, 21805101]
- Natural Science Foundation of Fujian Province [2020J01064, 2020J06021, 2019J01057]
- Scientific Research Funds of Huaqiao University [19BS105, 16BS201, 17BS409]
- Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University [ZQN-806, ZQN-PY607]
The designed functional fullerene FPD enhances power conversion efficiency and operational stability of perovskite solar cells through chemical interactions with the perovskite lattices, providing a novel strategy for high-performance and eco-friendly PSCs.
Designing functional fullerenes with roles beyond defect passivation and electron-transporting for perovskite solar cells (PSCs) is essential to the development of fullerenes and PSCs. Here, the authors design and synthesize a functional fullerene, FPD, composed of a C-60 cage, a porphyrin ring, and three pentafluorophenyl groups. The structure features of FPD enable it can form chemical interactions with the perovskite lattices. These interactions enhance the defect passivation effect and prevent the decomposition of perovskite under irradiation. As a result, the FPD-based device yields an improved power conversion efficiency of 23% with substantially enhanced operational stability (T-80 > 1500 h). Furthermore, once got damaged, the FPD can prevent lead leakage by forming a stable and water-insoluble complex (FPD-Pb). Their findings provide a novel strategy to achieve high-performance and eco-friendly PSCs with functional fullerene materials.
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