Towards a general concentration quenching model of Bi3+ luminescence

被引:39
作者
Awater, Roy H. P. [1 ]
Dorenbos, Pieter [1 ]
机构
[1] Delft Univ Technol, Fac Appl Sci, Dept Radiat Sci & Technol, Luminescence Mat Res Grp FAME LMR, NL-2629 JB Delft, Netherlands
关键词
Bi-pairs; Quenching; Charge transfer; Bi2+; Bi3+; EMISSION;
D O I
10.1016/j.jlumin.2017.05.011
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The vacuum referred binding energy of the electron in the Bi2+ ground state has been determined in 15 different compounds. This shows that the electron binding energy in the ground state of Bi2+ is at lower (more negative) energy compared to the electron binding energy in the excited state of Bi3+. This means that electron transfer from the excited state of one Bi3+ to a neighboring Bi3+, forming a Bi2 + -Bi4+ pair, acts as a quenching route for the Bi3+ emission. Electron back transfer in the Bi2 + Bi4+ pair is then suggested to be the origin for the frequently observed pair emission. This paper shows that vacuum referred electron binding energy diagrams can provide a unique physical insight in the properties of inorganic compounds.
引用
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页码:487 / 489
页数:3
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