Violet and blue photoluminescence emitted from ZnO films deposited by rf magnetron sputtering

Deheng Zhang; Z. Y. Xue; Qingpu Wang; Jin Ma

doi:10.1117/12.483108

17 September 2002 Violet and blue photoluminescence emitted from ZnO films deposited by rf magnetron sputtering

Deheng Zhang, Z. Y. Xue, Qingpu Wang, Jin Ma

Proceedings Volume 4918, Materials, Devices, and Systems for Display and Lighting; (2002) https://doi.org/10.1117/12.483108
Event: Photonics Asia, 2002, Shanghai, China

Abstract

A strong photoluminescence (PL) band has been observed at room temperature from ZnO films grown by r.f. sputtering when excited with 340-398 nm light. The PL spectrum consists of three bands with wavelengths 420 nm, 446 nm, and 490 nm, respectivley. The violet peak originates from the electron transition from the shallow level of interface trap at the grain boundaries to the valence band, the blue peak is due to the electron transition from the shallow donor level of oxygen vacancies band and the green emission is attributed to the electron transition from ionized oxygen vacancies to valence band.

Citation Download Citation

Deheng Zhang, Z. Y. Xue, Qingpu Wang, and Jin Ma "Violet and blue photoluminescence emitted from ZnO films deposited by rf magnetron sputtering", Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002); https://doi.org/10.1117/12.483108

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