Band gap engineering and spatial confinement of optical phonon in ZnO quantum dots

Kuo Feng Lin, Hsin Ming Cheng, Hsu Cheng Hsu, Wen Feng Hsieh

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

Both band gap engineering and spatial confinement of optical phonon were observed depending upon the size of ZnO quantum dots at room temperature. Size-dependent blueshifts of photoluminescence and absorption spectra reveal the quantum confinement effect. The measured Raman spectral shift and asymmetry for the E2(high) mode caused by localization of optical phonons agree well with that calculated by using the modified spatial correlation model.

Original languageEnglish
Article number263117
JournalApplied Physics Letters
Volume88
Issue number26
DOIs
Publication statusPublished - 2006 Jul 10

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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