Raman shifts of CdSe quantum dots in glass matrices

Author

Young-nam Hwang ; Sanghun Shin ; Hong Lee Park ; Seung-Han Park ; Ung Kim ; Hong Sik Jeong ; Eun-Joo Shin ; Dongho Kim

Author_Institution

Dept. of Phys., Yonsei Univ., Seoul, South Korea

fYear

1996

fDate

2-7 June 1996

Firstpage

285

Abstract

Summary form only given. Recently, the vibrational states of quantum dots have been intensively studied as well as the optical properties due to carrier confinement. In this report, a modified expression is proposed, which can explain the observed size- and glass-dependent phonon energies of CdSe quantum dots in B/sub 2/O/sub 3/-SiO/sub 2/ and SiO/sub 2/ glasses and the previously reported ones in a GeO/sub 2/ glass. We obtain the phonon frequency w(R) of microcrystal with radius to R considering phonon-frequency shifts due to phonon dispersion and lattice contraction.

Keywords

II-VI semiconductors; Raman spectra; cadmium compounds; optical glass; phonons; semiconductor quantum dots; spectral line shift; vibrational states; B/sub 2/O/sub 3/-SiO/sub 2/; CdSe quantum dots; GeO/sub 2/ glass; Raman shifts; SiO/sub 2/ glasses; carrier confinement; glass matrices; glass-dependent phonon energies; lattice contraction; microcrystal; optical properties; phonon dispersion; phonon frequency; phonon-frequency shifts; quantum dots; vibrational states; Frequency; Glass; Lattices; Nanocrystals; Phonons; Quantum dots; Solids; Temperature measurement; Thermal expansion; US Department of Transportation;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on

Conference_Location

Anaheim, CA, USA

Print_ISBN

1-55752-443-2

Type

conf

Filename

864680