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Perovskite solar cells using TiO 2 layers coated with metal‐organic framework material ZIF‐8
Author(s) -
Chung HoYang,
Lin ChiaHer,
Prabu Samikannu,
Wang HongWen
Publication year - 2018
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800173
Subject(s) - mesoporous material , chemistry , perovskite (structure) , energy conversion efficiency , photoluminescence , layer (electronics) , chemical engineering , metal , optoelectronics , nanotechnology , catalysis , materials science , organic chemistry , engineering
A metal‐organic framework of ZIF‐8 is used as an interlayer between the mesoporous TiO 2 and the perovskite layer in perovskite solar cells (PSCs). The ZIF‐8 solution is dried on the mesoporous TiO 2 layer, which can then act as an additional light absorbing layer at the short‐wavelength range for the solar cells, leading to improved performance of the cell. After an immersion time of 1–5 min, a very thin ZIF‐8 film is formed on TiO 2 . An enhancement in the incident photon to current conversion efficiency (IPCE) is achieved for PSCs using the ZIF‐8‐coated TiO 2 layer. The conversion efficiency of PSCs is improved from 9.6 to 12.0% when ZIF‐8 is present. UV–vis and photoluminescence (PL) spectra are used to investigate the beneficial effect of ZIF‐8/TiO 2 hybrid layers.