THE FLUORESCENCE AND REFLECTION SPECTRA OF ASm2I5 (A=K, Rb, Cs, Tl) FROM d-f TRANSITION IN SOLID STATE

Zhao Xinhua; Wang Shihua; Sun Changying

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THE FLUORESCENCE AND REFLECTION SPECTRA OF ASm₂I₅ (A=K, Rb, Cs, Tl) FROM d-f TRANSITION IN SOLID STATE

更新时间：2020-08-11

- THE FLUORESCENCE AND REFLECTION SPECTRA OF ASm₂I₅ (A=K, Rb, Cs, Tl) FROM d-f TRANSITION IN SOLID STATE
- Chinese Journal of Luminescence Vol. 12, Issue 4, Pages: 339-343(1991)
- 作者机构：
  
  1. 北京师范大学化学系
  2. 中国科学院长春应用化学研究所长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：10 December 1990，
  
  Published：30 November 1991
- 稿件说明：
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赵新华, 王世华, 孙长英. 固体ASm2I5的d-f跃迁荧光和反射光谱(A=K,Rb,Cs,T1)[J]. 发光学报, 1991,12(4): 339-343

Zhao Xinhua, Wang Shihua, Sun Changying. THE FLUORESCENCE AND REFLECTION SPECTRA OF ASm2I5 (A=K, Rb, Cs, Tl) FROM d-f TRANSITION IN SOLID STATE[J]. Chinese Journal of Luminescence, 1991,12(4): 339-343
赵新华, 王世华, 孙长英. 固体ASm2I5的d-f跃迁荧光和反射光谱(A=K,Rb,Cs,T1)[J]. 发光学报, 1991,12(4): 339-343 DOI：

Zhao Xinhua, Wang Shihua, Sun Changying. THE FLUORESCENCE AND REFLECTION SPECTRA OF ASm2I5 (A=K, Rb, Cs, Tl) FROM d-f TRANSITION IN SOLID STATE[J]. Chinese Journal of Luminescence, 1991,12(4): 339-343 DOI：

摘要

本文系统地研究了化合物ASm

(A=K

T1)固体粉末的荧光光谱和反射光谱.讨论了Sm

在立方晶体场中的分裂能随着碱金属离子半径的增大而减小和f-d激发能随着A-I(A=Rb

T1)键的共价性增加而明显降低的现象.并从晶场效应和化学键性质两个方面解释了ASm

(A=K

Cs)和ASm

(A=Rb

T1)中的Sm

荧光光谱分别发生蓝移和红移的现象.

Abstract

The fluorescence and reflection spectra of

(

=:K

Tl) in solid state were studied systematically. The splitting energy(Δ) and f-d excited energy (Efd)of Sm

in cubic crystal lattice field are discussed. It is indicated that the increase in r(A

) leads to the decrease in the crystal lattice field effect

and the covalence effect is decreased because of the increase of electronegativity difference between A

and I

. As a consequence the Efd is reduced. The fact that the fluorescence spectra shift to red or blue among ASm

can be explained by these effects.

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