ZnO白漆的质子辐照损伤与光学性能退化机理  

Proton Radiation Damage in ZnO-pigmented White Paints and Optical Degradation Mechanisms

作　　者：王旭东[1] 易忠 沈自才 顾鹏飞[1] 

机构地区：[1]北京科技大学新材料技术研究院,北京100083 [2]可靠性与环境工程技术重点实验室,北京100094

出　　处：《材料工程》2013年第5期1-5,共5页Journal of Materials Engineering

基　　金：可靠性与环境工程技术重点实验室开放基金(2011);国家自然科学基金资助项目(50502006);北京市科技新星计划资助项目(2008A029);北京市腐蚀;磨蚀与表面技术重点实验室和北京市教委共建项目(SYS100080419)

摘　　要：为进一步阐明ZnO白漆的辐照损伤与光学性能退化机理,在模拟的空间环境下对S781白漆进行了150keV质子辐照实验。质子辐照后,在原位条件下测试了光谱反射系数和太阳吸收比的退化规律,并利用模拟仿真和光致荧光光谱研究了ZnO白漆与质子间的微观交互作用和辐照诱发缺陷。结果表明,质子辐照下ZnO颜料发生电离生成-1价锌空位,是S781白漆出现b带吸收和光学性能退化的主要原因。此外,本工作支持了ZnO绿带荧光源于锌空位的第一原理计算结果。S781 white paints were irradiat in order to elucidate more definitely the ZnO-pigmented white paints. After proto lar absorptance was measured in situ. Th ed with 150 irradiation keV protons in a lated space environment, damage and optical degradation mechanisms n irradiations, the degradation in spectral refle e interaction between the protons and S781 whi ctance and te paints, for so- and the irradiation-induced defects, were also studied through simulations and photoluminescence. The re- sults show that the zinc vacancies in the 1-- charge state are due to the ionization of the ZnO pig- ments, and are responsible for the b band absorption and optical degradation. Furthermore, this work also supports the first-principles results of considering zinc vacancies as the defects responsible for the green luminescence band from ZnO.

关 键 词：空间环境 氧化锌白漆 质子辐照 锌空位 

分 类 号：V524.3[航空宇航科学与技术—人机与环境工程] TB303[一般工业技术—材料科学与工程]