Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142316
Title: Broadband‐emitting 2 D hybrid organic–inorganic perovskite based on cyclohexane‐bis(methylamonium) cation
Authors: Neogi, Ishita
Bruno, Annalisa
Bahulayan, Damodaran
Goh, Teck Wee
Ghosh, Biplab
Ganguly, Rakesh
Cortecchia, Daniele
Sum, Tze Chien
Soci, Cesare
Mathews, Nripan
Mhaisalkar, Subodh Gautam
Keywords: Engineering::Materials
Issue Date: 2017
Source: Neogi, I., Bruno, A., Bahulayan, D., Goh, T. W., Ghosh, B., Ganguly, R., . . . Mhaisalkar, S. G. (2017). Broadband‐emitting 2 D hybrid organic–inorganic perovskite based on cyclohexane‐bis(methylamonium) cation. ChemSusChem, 10(19), 3765-3772. doi:10.1002/cssc.201701227
Journal: ChemSusChem
Abstract: A new broadband‐emitting 2 D hybrid organic–inorganic perovskite (CyBMA)PbBr4 based on highly flexible cis ‐1,3‐bis(methylaminohydrobromide)cyclohexane (CyBMABr) core has been designed, synthesized, and investigated, highlighting the effects of stereoisomerism of the templating cation on the formation and properties of the resulting perovskite. The new 2 D material has high exciton binding energy of 340 meV and a broad emission spanning from 380 to 750 nm, incorporating a prominent excitonic band and a less intense broad peak at room temperature. Significant changes in the photoluminescence (PL) spectrum were observed at lower temperatures, showing remarkable enhancement in the intensity of the broadband at the cost of excitonic emission. Temperature‐dependent PL mapping indicates the effective role of only a narrow band of excitonic absorption in the generation of the active channel for emission. Based on the evidences obtained from the photophysical investigations, we attributed the evolution of the broad B‐band of (CyBMA)PbBr4 to excitonic self‐trapped states.
URI: https://hdl.handle.net/10356/142316
ISSN: 1864-5631
DOI: 10.1002/cssc.201701227
Rights: This is the accepted version of the following article: Neogi, I., Bruno, A., Bahulayan, D., Goh, T. W., Ghosh, B., Ganguly, R., . . . Mhaisalkar, S. G. (2017). Broadband‐emitting 2 D hybrid organic–inorganic perovskite based on cyclohexane‐bis(methylamonium) cation. ChemSusChem, 10(19), 3765-3772, which has been published in final form at https://doi.org/10.1002/cssc.201701227. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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