NDLI: Grain boundary engineering in atomically-thin nanosheets achieving bright white light emission

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Inside back cover

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Chemical Science Vol - 5 Issue - 3

Chemical Science Vol - 5 Issue - 2

Chemical Science Vol -4

Chemical Science Vol -3

Chemical Science Vol -2

Chemical Science Vol -1

Grain boundary engineering in atomically-thin nanosheets achieving bright white light emission

Content Provider	Royal Society of Chemistry (RSC)
Author	Xie, Junfeng Wang, Ruoxing Li, Shuang Zhang, Hao Xie, Yi
Copyright Year	2014
Abstract	Developing single-phased white light-emitting materials with high brightness, good transferability and energy-saving economy has attracted tremendous attention during the past decades owing to their facile light manipulation and easy device fabrication. Herein, we highlight the first transferable two-dimensional (2D) white light-emitter by engineering grain boundaries in atomically-thin semiconducting nanosheets. With the merits of the abundant grain boundaries, effective surface states that can trap the photogenerated charges can be enriched, giving significant enhancement of the surface-state emission. Besides, the existence of grain boundaries can shorten the diffusion length of the charge carriers from the photogeneration zone to the recombination center, giving a higher charge concentration for radiative recombination and further enhancing the intensity of the surface-state emission. In addition, the bandgap-tunable nature of the atomically-thin nanosheets endows the tunable band-edge emission, providing the opportunity to realize white light emission synergistically. The novel white light-emitter exhibits high brightness and superior photostability, which are crucial to solid-state lighting. This work paves a new way for achieving white light emission from single-phased photoluminescent materials and will broaden the vision on developing advanced white light-emitters with high brightness and transferability.
Starting Page	1328
Ending Page	1335
Page Count	8
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	5
Issue Number	4
Journal	Chemical Science
DOI	10.1039/c3sc53127a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carrier generation and recombination Photoluminescence Diffusion Grain boundary
Content Type	Text
Resource Type	Article
Subject	Chemistry

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