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Journal of Materials Science

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14-09-2017 | Energy materials

Modulation of exciton transition in crystalline nanostructures of an organic semiconductor

Authors: Yuyan Han, Liang Cao, Shusheng Pan, Xiaotao Xu, Hui Han, Faqiang Xu

Published in: Journal of Materials Science | Issue 2/2018

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Abstract

In organic semiconductors, photophysical properties are closely related to the exciton transition (ET). Therefore, modulating ET has great significance for the photophysical properties enhancement of organic semiconductors. Researchers can modulate the ET in organic semiconductor crystals and films by applying high pressure and annealing processes which respectively affects the molecular distance in crystals and the molecular orientation in films. Yet, how to simplify the way of modulating ET in organic semiconductors remains a great challenge. Herein, we prepared 3,4,9,10-perylenetetracarboxylic dianhydride crystalline films and nanorods, and successfully modified the type of the governing ET in PTCDA crystallites so that realized the switch of emission wavelength. Particularly, we exploring ET modulation mechanism. This will be helpful for the photophysics increment of organic semiconductors.

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Title: Modulation of exciton transition in crystalline nanostructures of an organic semiconductor
Authors: Yuyan Han
Liang Cao
Shusheng Pan
Xiaotao Xu
Hui Han
Faqiang Xu
Publication date: 14-09-2017
Publisher: Springer US
Published in: Journal of Materials Science / Issue 2/2018
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-017-1564-x

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