ENERGY TRANSFER IN THE SEMIMAGNETIC SEMICONDUCTERS Zn1-xMnxS

Wang Jingbai; Hoffmann H; Gumlich H-E

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ENERGY TRANSFER IN THE SEMIMAGNETIC SEMICONDUCTERS Zn_1-xMn_xS

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- ENERGY TRANSFER IN THE SEMIMAGNETIC SEMICONDUCTERS Zn_1-xMn_xS
- Chinese Journal of Luminescence Vol. 16, Issue 1, Pages: 38-43(1995)
- 作者机构：
  
  1. 中国科学院长春物理研究所长春,130021
  2. Institut f&#,252
  3. r Festerkoperphyaik der TU Berlin,Germany
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：28 February 1995，
  
  Received：15 April 1994，
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王敬伯, Hoffmann H, Gumlich H-E. 半磁半导体Zn1-xMnxS中的能量传递[J]. 发光学报, 1995,16(1): 38-43

Wang Jingbai, Hoffmann H, Gumlich H-E. ENERGY TRANSFER IN THE SEMIMAGNETIC SEMICONDUCTERS Zn1-xMnxS[J]. Chinese Journal of Luminescence, 1995,16(1): 38-43
王敬伯, Hoffmann H, Gumlich H-E. 半磁半导体Zn1-xMnxS中的能量传递[J]. 发光学报, 1995,16(1): 38-43 DOI：

Wang Jingbai, Hoffmann H, Gumlich H-E. ENERGY TRANSFER IN THE SEMIMAGNETIC SEMICONDUCTERS Zn1-xMnxS[J]. Chinese Journal of Luminescence, 1995,16(1): 38-43 DOI：

摘要

本文测量了Zn

1-x

S在不同Mn浓度(0.001

0.5)下的发射谱和衰减曲线

并且用Yokota和Tanimoto模型进行了分析在对

衰减曲线进行拟合时发现衰减曲线是两种不同弛豫过程之和:(1)孤立的Mn

离子的

衰减

它确定衰减曲线的尾部

有较长的衰减寿命;(2)Mn

离子聚集体(例如Mn

离子对)的

衰减

这种衰减比单个Mn

离子的衰减更快.我们深入分析了在

=0.062

T=80K时的Zn

1-x

S的发射谱及其衰减曲线

得到两个衰减寿命:

=70μs

1000μs

这表明在高Mn浓度时存在着两个弛豫过程:一个是较快的

另一个则是较慢的

根据Goede等人的实验结果可以断定较慢的过程来自孤立的Mn

离子

那么便可以判知较快的过程是来源于Mn

离子对.正是高Mn浓度下的Zn

1-x

S中存在着Mn

-Mn

离子对

在其间有能量迁移以及它和能量受主之间的能量传递造成了该体系中的IR发射.

Abstract

As an important material of optoelectronic devices

many questions about the luminescence of Zn

1-x

S had been researched clearly.The origin of additional emission bands

however

which appears in Zn

1-x

S only at higher amount of Mn(x≥0.01)are not yet fully explained.To counter this question

the emission spectra and decay curve of Zn

1-x

S at different concentrations of Mn(0.001

0.5)were measured and analyzed by the model of Yokota and Tanimoto.While fitting the decay curve of

we notice that the decay must be considered as sum of two different kinds of relaxation process:The

(G)decay of Mn

ions determines the tail of the decay curve as these states have a rather long lifetime.The

(G)decay of Mn

tupels(i.e.pairs of Mn

ions)is much faster than that of single Mn

state.We have analyzed deeply the emission spectra and its decay curve of Zn

1-x

S at x=0.062

T=80K

got two lifetimes:τ

=70μs

=≥1000μs.The results indicate that there are two kinds of relaxation process at high concentration of Mn

one is faster

another is slower.According to the experiment result of Goede et al.we may conclude the slower precess comes from isolated Mn

ions

then we may deduce there are the pairs of Mn

-Mn

in Zn

1-x

S at higher concentration of Mn and they cause the IR emission and in this system.

关键词

半磁半导体能量传递红外发射

Keywords

semimagnetic semiconductor(SMSC)energy transferinfrared emission

references

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