Synthesis and optical properties of cadmium selenide quantum dots for white light-emitting diode application
Abstract
Highlights: ► Stable CdSe QDs were synthesized by the one-step and two-level process respectively. ► The fabricated white LEDs show good white balance. ► CdSe QDs present well green to yellow band luminescence. ► CdSe QDs displayed a broad excitation band. - Abstract: Yellow light-emitting cadmium selenide quantum dots were synthesized using one-step and two-step methods in an aqueous medium. The structural luminescent properties of these quantum dots were investigated. The obtained cadmium selenide quantum dots displayed a broad excitation band suitable for blue or near-ultraviolet light-emitting diode applications. White light-emitting diodes were fabricated by coating the cadmium selenide samples onto a 460 nm-emitting indium gallium nitrite chip. Both samples exhibited good white balance. Under a 20 mA working current, the white light-emitting diode fabricated via the one-step and two-step methods showed Commission Internationale de l’Éclairage coordinates at (0.27, 0.23) and (0.27, 0.33), respectively, and a color rendering index equal to 41 and 37, respectively. The one-step approach was simpler, greener, and more effective than the two-step approach. The one-step approach can be enhanced by combining cadmium selenide quantum dots with proper phosphors.
- Authors:
-
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 53000 (China)
- Publication Date:
- OSTI Identifier:
- 22290370
- Resource Type:
- Journal Article
- Journal Name:
- Materials Research Bulletin
- Additional Journal Information:
- Journal Volume: 48; Journal Issue: 3; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; CADMIUM; CADMIUM SELENIDES; COLOR; CRYSTAL GROWTH; GALLIUM; INDIUM; LIGHT EMITTING DIODES; LUMINESCENCE; NITRITES; QUANTUM DOTS; SEMICONDUCTOR MATERIALS; SYNTHESIS
Citation Formats
Xu, Xianmei, Wang, Yilin, Gule, Teri, Luo, Qiang, Zhou, Liya, and Gong, Fuzhong. Synthesis and optical properties of cadmium selenide quantum dots for white light-emitting diode application. United States: N. p., 2013.
Web. doi:10.1016/J.MATERRESBULL.2012.11.093.
Xu, Xianmei, Wang, Yilin, Gule, Teri, Luo, Qiang, Zhou, Liya, & Gong, Fuzhong. Synthesis and optical properties of cadmium selenide quantum dots for white light-emitting diode application. United States. https://doi.org/10.1016/J.MATERRESBULL.2012.11.093
Xu, Xianmei, Wang, Yilin, Gule, Teri, Luo, Qiang, Zhou, Liya, and Gong, Fuzhong. 2013.
"Synthesis and optical properties of cadmium selenide quantum dots for white light-emitting diode application". United States. https://doi.org/10.1016/J.MATERRESBULL.2012.11.093.
@article{osti_22290370,
title = {Synthesis and optical properties of cadmium selenide quantum dots for white light-emitting diode application},
author = {Xu, Xianmei and Wang, Yilin and Gule, Teri and Luo, Qiang and Zhou, Liya and Gong, Fuzhong},
abstractNote = {Highlights: ► Stable CdSe QDs were synthesized by the one-step and two-level process respectively. ► The fabricated white LEDs show good white balance. ► CdSe QDs present well green to yellow band luminescence. ► CdSe QDs displayed a broad excitation band. - Abstract: Yellow light-emitting cadmium selenide quantum dots were synthesized using one-step and two-step methods in an aqueous medium. The structural luminescent properties of these quantum dots were investigated. The obtained cadmium selenide quantum dots displayed a broad excitation band suitable for blue or near-ultraviolet light-emitting diode applications. White light-emitting diodes were fabricated by coating the cadmium selenide samples onto a 460 nm-emitting indium gallium nitrite chip. Both samples exhibited good white balance. Under a 20 mA working current, the white light-emitting diode fabricated via the one-step and two-step methods showed Commission Internationale de l’Éclairage coordinates at (0.27, 0.23) and (0.27, 0.33), respectively, and a color rendering index equal to 41 and 37, respectively. The one-step approach was simpler, greener, and more effective than the two-step approach. The one-step approach can be enhanced by combining cadmium selenide quantum dots with proper phosphors.},
doi = {10.1016/J.MATERRESBULL.2012.11.093},
url = {https://www.osti.gov/biblio/22290370},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 3,
volume = 48,
place = {United States},
year = {Fri Mar 15 00:00:00 EDT 2013},
month = {Fri Mar 15 00:00:00 EDT 2013}
}