NDLI: Spectroscopy and femtosecond dynamics of type-II CdTe/CdSe core-shell quantum dots.

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Spectroscopy and femtosecond dynamics of type-II CdTe/CdSe core-shell quantum dots.

Content Provider	Semantic Scholar
Author	Chou, Pi-Tai Chen, Chun-Yen Cheng, Chiu-Ting Pu, Shih-Chieh Wu, Kun-Chan Cheng, Yi-Ming Lai, Chih-Wei Chou, Yi-Hsuan Chiu, Hsin-Tien
Copyright Year	2006
Abstract	Syntheses of CdTe/CdSe type-II quantum dots (QDs) using CdO and CdCl2 as precursors for core and shell, respectively, are reported. Characterization was made via near-IR interband emission, transmission electron microscopy (TEM), energy dispersive spectroscopy (EDX), and X-ray diffraction (XRD). Femtosecond fluorescence upconversion measurements on the relaxation dynamics of the CdTe core (in CdTe/CdSe) emission and CdTe/CdSe interband emission reveal that as the size of the core increases from 5.3, 6.1 to 6.9 nm, the rate of photoinduced electron separation decreases from 1.96, 1.44 to 1.07 x10(12) s(-1). The finite rates of the initial charge separation are tentatively rationalized by the small electron-phonon coupling, causing weak coupling between the initial and charge-separated states.
File Format	PDF HTM / HTML
DOI	10.1002/cphc.200500307
Alternate Webpage(s)	https://ir.nctu.edu.tw/bitstream/11536/12729/1/000234790600030.pdf
PubMed reference number	16404768
Alternate Webpage(s)	https://doi.org/10.1002/cphc.200500307
Journal	Medline
Volume Number	7
Issue Number	1
Journal	Chemphyschem : a European journal of chemical physics and physical chemistry
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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