Optical characteristics and microstructure of ZnO quantum dots- SiO 2 nanocomposite films prepared by sputtering methods

Yu Yun Peng*, Tsung-Eong Hsien, Chia Hung Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

ZnO quantum dots (QDs)- Si O2 nanocomposite films were prepared using the target-attached radio-frequency sputtering. The transmission electron microscopy revealed the uniform dispersion of ZnO QDs with diameters about 2-7 nm in amorphous Si O2 matrix. The photoluminescence showed that small ZnO QDs are able to emit white light with luminescence spectra similar to those of the present GaN-based light emitting diode (LED). The calculated chromaticity coordinates of emitting light evidenced the feasibility of ZnO QDs- Si O2 nanocomposite films as the fluorescence material in optoelectronic devices.

Original languageEnglish
Article number211909
JournalApplied Physics Letters
Volume89
Issue number21
DOIs
StatePublished - 15 Dec 2006

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