Title of Paper:Photoluminescence study of interstitial oxygen defects in ZnO nanostructures

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Affiliation of Author(s):航天学院

Journal:MATERIALS LETTERS

Key Words:ZnO Defects PL Nanocrystalline materials

Abstract:ZnO defect luminescence is a fascinating but still highly controversial issue. Herein, the role of interstitial oxygen played on the photoluminescence (PL) property of ZnO nanostructures is investigated through oxygen plasma exposure and low temperature O-2 annealing. In contrast to previous reports, no interstitial oxygen related deep level emission was observed in PL spectra from room temperature (RT) to 7 K after oxygen-rich treatments, except apparent suppression of the exciton emission due to the upward band bending effect. This work illustrates that the isolated interstitial oxygen seems not to cause the widely reported yellow/orange emission regardless of the ZnO growth method. (C) 2018 Elsevier B.V. All rights reserved.

ISSN No.:0167-577X

Translation or Not:no

Date of Publication:2018-05-01

Co-author:fmh

Correspondence Author:lvjinpeng