Structure and Luminescence Properties of Eu~(3+) Doped SiO_2 Glass Synthesized by Sol-Gel Process

Ａｍｏｎｇｌａｎｔｈａｎｉｄｅｉｏｎｓ ,Ｅｕ3 + ｉｏｎｐｏｓｓ ｅｓｅｓｇｏｏｄｌｕｍｉｎｅｓｃｅｎｔｃｈａｒａｃｔｅｒｉｓｔｉｃｓ ,ｈｉｇｈｃｏｌｏｒｐｕｒｉｔｙａｎｄｈｉｇｈｑｕａｎｔｕｍｅｆｆｉｃｉｅｎｃｙ .Ｅｕ3 + ｉｓｏｎｅｏｆｔｈｅｃｅｎｔｒａｌｉｏｎｓｆｉｒｓｔｓｅｌｅｃｔｅｄｆｏｒｔｈｅｐｒｅｐａｒａｔｉｏｎｏｆｒａｒｅｅａｒｔｈｉｏｎｓｄｏｐｅｄｌｕｍｉ ｎｅｓｃｅｎｔｍａｔｅｒｉａｌｓ .Ｄａｆｉｎｏｖａｅｔａｌ .[1] ｐｒｏｄｕｃｅｄＥｕ3 + ａｎｄＳＯ2 -4 ｄｏｐｅｄｔｕｎｇｓｔａ…     

掺Tb3+硅基材料的发光性质

采用溶胶-凝胶技术制备了掺Tb3+的硅基材料并测试了其三维荧光光谱、激发光谱和发射光谱,结果显示最佳激发波长为240nm,最强荧光波长为540nm,在540nm光下的激发光谱峰为240nm,在240nm光激发下的发射光谱显示Tb3+的特征发射光谱,产生4条谱带,分别是492nm(5D4-7F6)、542nm(5D4-7F5)、593nm(5D4-7F4)及614nm(5D4-7F3)。     

高T_cYBa_2Cu_3O_x中Cu离子价态的H_2~+束流光谱研究

对高T_c YBa_2Cu_3O_x及名义组成为YBa_2Ag_3O_x和YBa_2Cu_(1.5)Ag_(1.5)O_x体系进行了H_2~+束流光谱的比较研究,证实YBa_2Cu_3O_x的束流光谱主要是Cu离子的贡献。通过对谱带的指认,讨论了Cu离子可能存在的价态。     

Thermal Shift of Energy Levels in the Eu~(2+)-Doped Strontium Chlorophosphate

The thermal shift of 5d energy level of Eu~(2+) doped in Sr_5(PO_4)_3Cl have been measured in 10～700 K.A simulation calculation was worked out with a modified theoretical equation.