Near-Infrared Quantum Cutting Downconversion Luminescence of Yb3+ Ion Cooperative Energy Transferred from YVO4 Matrix Donor

作者：Chen Xiao-bo^*; Zhou Gu; Zhou Yong-fen; Wu Zheng-long; Guo Yu-ying; Wang Shui-feng; Zou Qiu-yan; Zhuang Jian; Chen Xiao-duan; Li Chun-mi; Yao Wen-ting; Cheng Huan-li

来源：Spectroscopy and Spectral Analysis, 2015, 35(2): 315-319.

DOI：10.3964/j.issn.1000-0593(2015)02-0315-05

• Near-infrared quantum cutting
• Solar cell
• Yb3+ ion
• YVO4
• Cooperative energy transfer

The present manuscript researches the near infrared quantum cutting luminescence phenomena of Yb3+ ion in YVO4 crystal matrix. The luminescence spectra, excitation spectra and fluorescence lifetimes were measured. It was found that the excitation of YVO4 crystal matrix energy band by 322. 0 nm light can result in the effective secondary cooperative energy transfer of Yb3+ ion from the YVO4 crystal matrix. It results in the intense 985. 5 nm F-2(5/2) -> F-2(7/2) near infrared quantum cutting luminescence of Yb3+ ion. Meanwhile, the 430. 0 nm luminescence intensity of YVO4 crystal matrix decreases greatly. From the experimental measurements, it was found that the lifetime of 430. 0 nm fluorescence of (A) Yb(1. 5) YVO4 crystal is tau(A) =3. 785 s and that of (B) YVO4 crystal is tau(B)=22. 72 s. It was found also that the theoretical efficiency up limit of quantum cutting of (A) Yb(1. 5) : YVO4 crystal is about eta(1.5%Yb) =183. 3%.

• 出版日期2015-2
• 单位中国科学院福建物质结构研究所; 北京大学; 北京师范大学