Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142521
Title: Morphology-independent stable white-light emission from self-assembled two-dimensional perovskites driven by strong exciton–phonon coupling to the organic framework
Authors: Thirumal, Krishnamoorthy
Chong, Wee Kiang
Xie, Wei
Ganguly, Rakesh
Muduli, Subas Kumar
Sherburne, Matthew
Asta, Mark
Mhaisalkar, Subodh Gautam
Sum, Tze Chien
Soo, Han Sen
Mathews, Nripan
Keywords: Engineering::Materials
Issue Date: 2017
Source: Thirumal, K., Chong, W. K., Xie, W., Ganguly, R., Muduli, S. K., Sherburne, M., . . . Mathews, N. (2017). Morphology-independent stable white-light emission from self-assembled two-dimensional perovskites driven by strong exciton–phonon coupling to the organic framework. Chemistry of Materials, 29(9), 3947-3953. doi:10.1021/acs.chemmater.7b00073
Journal: Chemistry of Materials
Abstract: Hybrid two-dimensional (2D) lead halide perovskites have been employed in optoelectronic applications, including white-light emission for light-emitting diodes (LEDs). However, until now, there have been limited reports about white-light-emitting lead halide perovskites with experimental insights into the mechanism of the broadband emission. Here, we present white-light emission from a 2D hybrid lead chloride perovskite, using the widely known phenethylammonium cation. The single-crystal X-ray structural data, time-resolved photophysical measurements, and density functional theory calculations are consistent with broadband emission arising from strong exciton–phonon coupling with the organic lattice, which is independent of surface defects. The phenethylammonium lead chloride material exhibits a remarkably high color rendering index of 84, a CIE coordinate of (0.37,0.42), a CCT of 4426, and photostability, making it ideal for natural white LED applications.
URI: https://hdl.handle.net/10356/142521
ISSN: 0897-4756
DOI: 10.1021/acs.chemmater.7b00073
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.chemmater.7b00073
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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