光子学报, 2014, 43 (3): 0316001, 网络出版: 2014-04-09
Bi和Bi/Er共掺钙铝锗酸盐玻璃的超宽带红外发光
Bi-doped and Bi/Er Co-doped Calcium Aluminum Germanate Glasses with Ultra-broadband Infrared Luminescence
近红外发光 光学碱度 能量传递 光放大器 吸收光谱 锗酸盐玻璃 Near infrared luminescence Optical basicity Energy transfer Amplifer Absorption spectra Germanate glass
摘要
研究了铋掺杂以及铋铒共掺铝钙锗酸盐玻璃的超宽带红外发光性质.采用传统的熔融-退火方法获得所需玻璃.铋离子掺杂钙铝锗酸盐红外发光峰可以分为1 265 nm和1 420 nm处的两个峰,1 420 nm处的峰强度较弱.X射线光电子能谱测试结果表明,玻璃中的铋离子以混合价态形式存在,三价的铋离子可能被还原为低价态铋离子.实验结果表明,铋离子红外发光源于低价态铋离子,可能源于一价Bi+;铒离子掺杂影响铋离子发光,随着铒离子浓度的增加,铋离子红外发光减弱,说明存在铋离子向铒离子的能量传递.
Abstract
Luminescence from Bi and Bi/Er doped aluminum calcium germanate glasses were investigated. The glasses were prepared by conventional melting-quenching technique. The near infrared luminescence of Bi-doped calcium aluminum germinate glasses can be divided into two Gaussian peaks which are located at 1 265 and 1 420 nm separately. The X-ray photoelectron spectroscopy spectrum indicates the valence state of Bi ions in the calcium aluminum germinate glasses is the mixed. Bi3+ ions could be reduced to low valence states bismuth ions. The experiments support the assumption that the near-infrared luminescence is connected with a low valence state of Bi, may be Bi+. Er3+ was introduced to adjust the 1420 nm band of Bi-related fluorescence. With the increment of Er3+ concentration, near-infrared fluorescence relative intensity of Bi ions is decreasing, which implies the energy transfer from Bi ions to Er3+.
何禧佳, 周大成, 李臣, 陈明厚, 魏生贤, 邱建备. Bi和Bi/Er共掺钙铝锗酸盐玻璃的超宽带红外发光[J]. 光子学报, 2014, 43(3): 0316001. HE Xi-jia, ZHOU Da-cheng, LI Chen, TRAN Minh Hau, WEI Sheng-xian, QIU Jian-bei. Bi-doped and Bi/Er Co-doped Calcium Aluminum Germanate Glasses with Ultra-broadband Infrared Luminescence[J]. ACTA PHOTONICA SINICA, 2014, 43(3): 0316001.