Optimized Synthesis and Fluorescence Spectrum Analysis of CdSe Quantum Dots
β Scribed by Xu, Wanbang; Wang, Yongxian; Liang, Sheng; Xu, Ronghui; Zhang, Guoxin; Xu, Fenghua; Yin, Duanzhi
- Book ID
- 118020149
- Publisher
- Taylor and Francis Group
- Year
- 2008
- Tongue
- English
- Weight
- 608 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0193-2691
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π SIMILAR VOLUMES
We report on ultra-narrow, long-term stable emission of single, self-assembled CdSe/ZnSe QDs. The excitation spectrum reveals a spectrally sharp excited state with a lifetime of 1.5 ps, related to the LO-phonon decay. In addition, excitation features due to optical and acoustic phonons are present.
## Abstract We have designed a simple, oneβstep synthesis of CdSe quantum dots with photoluminescence frequencies ranging from the red through to the violet region of the solar spectrum. The photoluminescence peaks have FWHM of 30Β nm indicating absorption over a narrow range of wavelengths. The eff