Study of the degradation and recovery of the optical properties of H⁺-implanted ZnO pigments

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• 作者：Chundong Li ; Jinpeng Lv ; ^{hitlv@yahoo.com.cn} ; Shulong Yao ; Jiangang Hu ; Zhiqiang Liang
• 关键词：ZnO ; Proton implantation ; Defect ; Optical properties
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2013
• 出版时间：15 January, 2013
• 年：2013
• 卷：295
• 期：Complete
• 页码：11-15
• 全文大小：544 K

文摘

We studied the influences of proton implantation and oxygen post-annealing on the optical properties of ZnO pigments using a combination of Raman scattering, positron annihilation and photoluminescence techniques. Raman scattering results indicated that oxygen vacancies and interstitial zinc defects were produced after proton implantation. Positron annihilation spectroscopy and photoluminescence measurements demonstrated that the zinc vacancies do not contribute to the optical absorption, but give rise to the visible band emission. Interestingly, the proton implantation induced optical degradation can be annealed out at 800 ¡ãC in an O₂ atmosphere. We conclude that the defect centers responsible for the optical absorption are primarily composed of , ionized Zn_i and ionized O_i.