Enhanced emission from CH3NH3PbBr3 perovskite films by graphene quantum dot modification

Autor: Xi Guo, Bingquan Han, Yu Gao, Dan Liu, Jiayao Chen, Pengyun Chen, Lingbo Xu, Can Cui
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Materials Research Express, Vol 7, Iss 1, p 016415 (2020)
Druh dokumentu: article
ISSN: 2053-1591
DOI: 10.1088/2053-1591/ab61a6
Popis: Organic-inorganic hybrid perovskites have emerged as promising emitters with the benefits of low cost and high color purity, but their low luminescence efficiency is a drawback for practical application on light emitting devices. Here we show that by incorporating proper amount of graphene quantum dots (GQDs) into perovskite precursor, dense CH _3 NH _3 PbBr _3 films with reduced grain size and well passivated grain boundaries could be obtained. This gives rise to enhanced emission from GQD modified perovskite films. Our work thus provides a viable way to prepare highly luminescent perovskite films for optoelectronic applications.
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