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CHNHPbI钙钛矿单晶：表面光物理及其与环境的相互作用。

CHNHPbI perovskite single crystals: surface photophysics and their interaction with the environment.

作者信息

Grancini G, D'Innocenzo V, Dohner E R, Martino N, Srimath Kandada A R, Mosconi E, De Angelis F, Karunadasa H I, Hoke E T, Petrozza A

机构信息

Center for Nano Science and Technology@Polimi , Istituto Italiano di Tecnologia , via Giovanni Pascoli 70/3 , 20133 , Milan , Italy . Email:

Dipartimento di Fisica , Politecnico di Milano , Piazza L. da Vinci, 32 , 20133 Milano , Italy.

出版信息

Chem Sci. 2015 Dec 1;6(12):7305-7310. doi: 10.1039/c5sc02542g. Epub 2015 Sep 17.

DOI:10.1039/c5sc02542g
PMID:28757989
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5512535/
Abstract

Here we identify structural inhomogeneity on a micrometer scale across the surface of a CHNHPbI perovskite single crystal. At the crystal edge a local distortion of the crystal lattice is responsible for a widening of the optical bandgap and faster photo-carrier recombination. These effects are inherently present at the edge of the crystal, and further enhanced upon water intercalation, as a preliminary step in the hydration of the perovskite material.

摘要

在这里，我们识别出了CHNHPbI钙钛矿单晶表面微米尺度上的结构不均匀性。在晶体边缘，晶格的局部畸变导致了光学带隙变宽和光载流子复合加快。这些效应在晶体边缘本来就存在，并且在水插层时进一步增强，这是钙钛矿材料水合作用的初步步骤。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/a10356ef8e87/c5sc02542g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/778c358db6c1/c5sc02542g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/b019f86e527b/c5sc02542g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/a10356ef8e87/c5sc02542g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/778c358db6c1/c5sc02542g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/b019f86e527b/c5sc02542g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/eee4/5512535/a10356ef8e87/c5sc02542g-f3.jpg

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The Raman Spectrum of the CH3NH3PbI3 Hybrid Perovskite: Interplay of Theory and Experiment.
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Methanol-induced fast CsBr release results in phase-pure CsPbBr perovskite nanoplatelets.甲醇诱导的快速溴化铯释放产生了纯相的溴化铯铅钙钛矿纳米片。
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