Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/98951
Title: Light-induced photoluminescence switching using liquid crystal-dispersed quantum dots
Authors: Hsiao, Vincent K. S.
Prasad, Paras N.
Cheng, Min-Chi
Chu, Chih-Chien
Su, Yu-Chuan
Chang, Wei-Ting
Yong, Ken-Tye
Law, Wing-Cheung
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Series/Report no.: IEEE photonics journal
Abstract: Light-induced photoluminescence (PL) switching using azobenzene-doped liquid crystal (LC)-dispersed quantum dots (QDs) is demonstrated in a format of LC cell and LC-infiltrated tube. Before light irradiation, excitation photons undergo multiple scattering events before emission out of the LC cell, and PL intensity is high. Upon the light irradiation, the trans-to-cis photoisomerization of azobenzene makes the QD-dispersed LCs highly transparent, thus allowing most excitation photons to pass through LCs and decrease PL intensity. This demonstration may allow a new modulating technique for future development of light-switchable, QD-emission-based display or photonic devices.
URI: https://hdl.handle.net/10356/98951
http://hdl.handle.net/10220/13466
ISSN: 1943-0655
DOI: 10.1109/JPHOT.2011.2179289
Rights: © 2012 IEEE
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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