Phase Segregation in Cs-, Rb- and K-Doped Mixed-Cation (MA)(x)(FA)(1-x)PbI(3) Hybrid Perovskites from Solid-State NMR.
Phase Segregation in Cs-, Rb- and K-Doped Mixed-Cation (MA)(x)(FA)(1-x)PbI(3) Hybrid Perovskites from Solid-State NMR.
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DOI:
10.1021/jacs.7b07223
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发表时间:
2017-10-11
影响因子:
15
通讯作者:
Emsley L
中科院分区:
文献类型:
--
作者:
Kubicki DJ;Prochowicz D;Hofstetter A;Zakeeruddin SM;Grätzel M;Emsley L
Hybrid (organic–inorganic) multication lead halide perovskites hold promise for a new generation of easily processable solar cells. Best performing compositions to date are multiple-cation solid alloys of formamidinium (FA), methylammonium (MA), cesium, and rubidium lead halides which provide power conversion efficiencies up to around 22%. Here, we elucidate the atomic-level nature of Cs and Rb incorporation into the perovskite lattice of FA-based materials. We use 133Cs, 87Rb, 39K, 13C, and 14N solid-state MAS NMR to probe microscopic composition of Cs-, Rb-, K-, MA-, and FA-containing phases in double-, triple-, and quadruple-cation lead halides in bulk and in a thin film. Contrary to previous reports, we have found no proof of Rb or K incorporation into the 3D perovskite lattice in these systems. We also show that the structure of bulk mechanochemical perovskites bears close resemblance to that of thin films, making them a good benchmark for structural studies. These findings provide fundamental understanding of previously reported excellent photovoltaic parameters in these systems and their superior stability.
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影响因子:
3
作者:
Grimme, Stefan
通讯作者:
Grimme, Stefan
影响因子:
5.7
作者:
Franssen, Wouter M. J.;van Es, Sverre G. D.;Kentgens, Arno P. M.
通讯作者:
Kentgens, Arno P. M.
影响因子:
8.6
作者:
Philippe, Bertrand;Saliba, Michael;Rensmo, Hakan
通讯作者:
Rensmo, Hakan
DOI:
10.1002/zaac.19885620112
发表时间:
1988-07-01
影响因子:
1.4
作者:
BECK, HP;MILIUS, W
通讯作者:
MILIUS, W
影响因子:
15
作者:
Kojima, Akihiro;Teshima, Kenjiro;Miyasaka, Tsutomu
通讯作者:
Miyasaka, Tsutomu