QQ客服 官方微博 反馈留言

	Effect of temperature on the degradation of ZnS FED phosphors
	Shi, Weiping ; Cai, Xiaohai ; Wei, Jiying ; Ma, Jun ; Hu, Tiandou ; Wu, Nianzu ; Xie, Youchang
	2001
英文摘要	The changes in cathodoluminescent brightness and changes in the surface chemistry of ZnS:Cu,Al,Au have been investigated using Auger electron spectroscopy (AES) and a photospectrometer. The ZnS:Cu,Al,Au phosphor powders have been subjected to electron beam bombardment of 2 ke V, with an electron beam current density of 88 mA cm-2 at an oxygen pressure of 2 ?? 10-6 Torr. The studies were carried out between room temperature and 310 ??C. Degradation was manifested by a non-luminescent ZnO layer that formed on the surface of the phosphor according to the electron-stimulated surface chemical reaction (ESSCR) mechanism. An increase in temperature led to a decrease in the surface reaction rate due to a decrease in the mean surface lifetime of the oxygen molecules on the surface, with a direct decrease in the ESSCR probability. Without the presence of the electron beam, no chemical reactions occurred on the surface up to 310 ??C. Local heating due to the electron beam irradiatio n is not responsible for the chemical reactions on the ZnS phosphor surface. Copyright ? 2001 John Wiley & Sons, Ltd.; EI; 0
语种	英语
DOI标识	10.1002/sia.1018
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/412699]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Shi, Weiping,Cai, Xiaohai,Wei, Jiying,et al. Effect of temperature on the degradation of ZnS FED phosphors. 2001-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。