Er^(3+)/Eu^(3+)及Yb^(3+)/Er^(3+)/Eu^(3+)共掺杂硼硅酸盐玻璃的上转换发光分析

Up-conversion Emission Analysis of Er^(3+)/Eu^(3+) Co-doped and Yb^(3+)/Er^(3+)/Eu^(3+) Co-doped Borosilicate Glasses

采用高温固相烧结法制备了Er3+/Eu3+共掺杂和Yb3+/Er3+/Eu3+共掺杂系列硼硅酸盐玻璃样品。在978 nm半导体激光器抽运下,测量了样品的光致发光谱,分析了上转换机制。结果表明:随着Er3+浓度的增加,Eu3+的595 nm光谱强度增强;Eu3+的692 nm光谱强度随Yb3+浓度增加而增强,并明显强于595 nm光谱。Er3+/Eu3+、Yb3+/Eu3+之间的能量传递和合作上转换等机制导致Eu3+离子上转换发射。

A series of Er^3＋/Eu^3＋ co-doped,Yb^3＋/Er^3＋/Eu^3＋ co-doped borosilicate glasses have been prepared by high-temperature solid-phase melting.Under 978 nm semiconductor laser excitation,the up-conversion emission spectra of the samples were measured,and up-conversion mechanism was analyzed.The emission intensities of Eu^3＋ ions at 595 nm and 692 nm were enhanced with increasing concentration of Er^3＋,Yb3＋,respectively.And emission intensity at 692 nm is stronger than that at 595 nm.The cooperation up-conversion and the energy transfer between Yb^3＋ and Eu^3＋,Er^3＋ and Eu^3＋ lead to a strong up-conversion emission of trivalent europium ions.