Organic-inorganic perovskitoid with zwitterion cysteamine linker and its crystal-crystal transformation to ruddlesden-popper phase

TitleOrganic-inorganic perovskitoid with zwitterion cysteamine linker and its crystal-crystal transformation to ruddlesden-popper phase
Publication TypeJournal Article
Year of Publication2021
AuthorsKour, P, Reddy, MChenna, Pal, S, Sidhik, S, Das, T, Pandey, P, Mukherjee, SPorel, Chakraborty, S, Mohite, AD, Ogale, S
JournalAngewandte Chemie-International Edition
Volume60
Issue34
Pagination18750-18760
Date PublishedAUG
Type of ArticleArticle
ISSN1433-7851
KeywordsCrystal growth, organic-inorganic hybrid composites, perovskite phases, photodetectors, zwitterions
AbstractWe demonstrate synthesis of a new low-D hybrid perovskitoid (a perovskite-like hybrid halide structure, yellow crystals, P21/n space group) using zwitterion cysteamine (2-aminoethanethiol) linker, and its remarkable molecular diffusion-controlled crystal-to-crystal transformation to Ruddlesden-Popper phase (Red crystals, Pnma space group). Our stable intermediate perovskitoid distinctly differs from all previous reports by way of a unique staggered arrangement of holes in the puckered 2D configuration with a face-sharing connection between the corrugated-1D double chains. The PL intensity for the yellow phase is 5 orders higher as compared to the red phase and the corresponding average lifetime is also fairly long (143 ns). First principles DFT calculations conform very well with the experimental band gap data. We demonstrate applicability of the new perovskitoid yellow phase as an excellent active layer in a self-powered photodetector and for selective detection of Ni2+ via On-Off-On photoluminescence (PL) based on its composite with few-layer black phosphorous.
DOI10.1002/anie.202105918
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)15.336
Divison category: 
Physical and Materials Chemistry

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