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Proceedings Paper

Ultrafast dynamics of electron and hole in ZnSe quantum dots in gel glasses
Author(s): Junfang He; Minqiang Wang; Zhihui Luo; Sujuan Zhang; Shuicai Wang
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Paper Abstract

ZnSe/SiO2 silica gel glasses were prepared through a sol-gel process. A femtosecond transient absorption spectroscopy and a time-resolved photoluminescence spectroscopy were used to detect the electron and hole relaxation in the ZnSe QDs. In the case of excitation 3.76eV, the TA and PL spectra were detected. The results showed that two competing processes, electron-hole recombination and surface electron trapping, occur in 10~100 ps time scale and the holes on valance band decay in about 1 ps.

Paper Details

Date Published: 9 February 2005
PDF: 4 pages
Proc. SPIE 5635, Nanophotonics, Nanostructure, and Nanometrology, (9 February 2005); doi: 10.1117/12.576674
Show Author Affiliations
Junfang He, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Minqiang Wang, Xi’an Jiaotong Univ. (China)
Zhihui Luo, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Sujuan Zhang, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Shuicai Wang, Xi'an Institute of Optics and Precision Mechanics, CAS (China)


Published in SPIE Proceedings Vol. 5635:
Nanophotonics, Nanostructure, and Nanometrology
Xing Zhu; Stephen Y. Chou; Yasuhiko Arakawa, Editor(s)

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