期刊
NANO ENERGY
卷 51, 期 -, 页码 556-562出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2018.06.085
关键词
Light trapping; Whispering-gallery; Imprinting; Perovskite
类别
资金
- National Natural Science Foundation of China [21522308, 51773206, 51573192, 51473173, 21421061]
- National Key R&D Program of China [2018YFA0208501, 2016YFB0401603, 2016YFC1100502, 2016YFB0401100]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA09020000]
- External Cooperation Program of BIC, Chinese Academy of Sciences [121111KYSB20150022]
Inspired by light/sound trapping in whispering-gallery, a light trapping structure mimicking whispering-gallery (WG) structure is constructed on perovskite active layer for antireflection and light harvesting via simply imprinted process with robust microstructure stamp for perovskite solar cells (PSCs). The WG structured perovskite films can achieve light trapping by optical feedback and gradually absorption. The crystallization and size of perovskite are improved by the imprinting process with robust micro-patterned stamp. Moreover, this method can efficiently accelerate electron-hole separation and suppress recombination by extract tentacles of the arrayed column structure. Consequently, the power conversion efficiency of the whispering-gallery structured PSC is improved to 19.80%, which is ca. 29.4% higher than that of the non-imprinted PSC (15.30%).
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