Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots
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, a...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2012-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/6111229/ |
| _version_ | 1818618618656587776 |
|---|---|
| author | Min-Chi Cheng Chih-Chien Chu Yu-Chuan Su Wei-Ting Chang Vincent K. S. Hsiao Ken-Tye Yong Wing-Cheung Law Paras N. Prasad |
| author_facet | Min-Chi Cheng Chih-Chien Chu Yu-Chuan Su Wei-Ting Chang Vincent K. S. Hsiao Ken-Tye Yong Wing-Cheung Law Paras N. Prasad |
| author_sort | Min-Chi Cheng |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-16T17:24:27Z |
| format | Article |
| id | doaj.art-3eecfc8fe8e8464cae501740ff743e44 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-16T17:24:27Z |
| publishDate | 2012-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-3eecfc8fe8e8464cae501740ff743e442022-12-21T22:23:06ZengIEEEIEEE Photonics Journal1943-06552012-01-0141192510.1109/JPHOT.2011.21792896111229Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum DotsMin-Chi Cheng0Chih-Chien Chu1Yu-Chuan Su2Wei-Ting Chang3Vincent K. S. Hsiao4Ken-Tye Yong5Wing-Cheung Law6Paras N. Prasad7<formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex> </formula>Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, NanTou, Taiwan<formula formulatype="inline"><tex Notation="TeX">$^{2}$</tex> </formula>Department of Applied Chemistry, Chung Shan Medical University, Taichung, TaiwanDepartment of Applied Materials and Optoelectronic Engineering, National Chi Nan University, NanTou, Taiwan<formula formulatype="inline"><tex Notation="TeX">$^{3}$</tex> </formula>Department of Applied Chemistry, National Chi Nan University, NanTou, TaiwanDepartment of Applied Materials and Optoelectronic Engineering, National Chi Nan University, NanTou, Taiwan<formula formulatype="inline"><tex Notation="TeX">$^{4}$</tex></formula>School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore<formula formulatype="inline"><tex Notation="TeX">$^{5}$</tex></formula>Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, Buffalo, NY , USAInstitute for Lasers, Photonics, and Biophotonics, University at Buffalo, Buffalo, NY, USALight-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.https://ieeexplore.ieee.org/document/6111229/Photonic materialsoptical properties of photonic materials |
| spellingShingle | Min-Chi Cheng Chih-Chien Chu Yu-Chuan Su Wei-Ting Chang Vincent K. S. Hsiao Ken-Tye Yong Wing-Cheung Law Paras N. Prasad Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots IEEE Photonics Journal Photonic materials optical properties of photonic materials |
| title | Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots |
| title_full | Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots |
| title_fullStr | Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots |
| title_full_unstemmed | Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots |
| title_short | Light-Induced Photoluminescence Switching Using Liquid Crystal-Dispersed Quantum Dots |
| title_sort | light induced photoluminescence switching using liquid crystal dispersed quantum dots |
| topic | Photonic materials optical properties of photonic materials |
| url | https://ieeexplore.ieee.org/document/6111229/ |
| work_keys_str_mv | AT minchicheng lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT chihchienchu lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT yuchuansu lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT weitingchang lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT vincentkshsiao lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT kentyeyong lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT wingcheunglaw lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots AT parasnprasad lightinducedphotoluminescenceswitchingusingliquidcrystaldispersedquantumdots |