Structure and optical properties of Mn-implanted CdTe

HE Jun LI Meng GUO Liping LIU Chuangshen FU Dejun

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Structure and optical properties of Mn-implanted CdTe

更新时间：2021-03-12

- Structure and optical properties of Mn-implanted CdTe
- NUCLEAR TECHNIQUES Issue 6, (2008)
- 作者机构：
  
  1. 武汉大学物理科学与技术学院加速器实验室
  2. 武汉大学物理科学与技术学院加速器实验室,武汉,430072
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10675095)资助
- DOI：
  CLC： O469
- Published：01 June 2008
- 稿件说明：
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[1]何俊,李梦,郭立平,刘传胜,付德君.Mn注入CdTe晶体的物理性质及其结构研究[J].核技术,2008(06):438-440.

HE Jun LI Meng GUO Liping LIU Chuangshen FU Dejun. Structure and optical properties of Mn-implanted CdTe[J]. Nuclear techniques, 2008, (6): 438-440.
[1]何俊,李梦,郭立平,刘传胜,付德君.Mn注入CdTe晶体的物理性质及其结构研究[J].核技术,2008(06):438-440. DOI：

HE Jun LI Meng GUO Liping LIU Chuangshen FU Dejun. Structure and optical properties of Mn-implanted CdTe[J]. Nuclear techniques, 2008, (6): 438-440. DOI：

摘要

用离子注入法制备了Mn掺杂的CdTe

Mn离子能量为200keV

X射线衍射测得注入样品的衍射半高宽为由48arcsec变为146 arcaec

X射线光电子能谱分析样品表明

由于注入Mn离子置换了Cd离子

形成了Mn-Te键

阴极荧光谱显示注入后样品的禁带宽度由原来的1.49eV变为1.50eV

表明注入样品的CdTe:Mn层出现合金化

形成了三元化合物CdMnTe。

Abstract

CdTe:Mn was prepared by 200 keV Mn ion implantation to a dose of 5×1016 cm–2

The results demon-strate that the CdTe:Mn possesses ferroelectricity.X-ray diffraction measurement showed that the Mn+-implanted layer maintained zinc-blend structure

but the full width at half maximum(FWHM) of the Mn peak increased from.48 arcsec of the pristine sample to 146 arcsec of the implanted sample.XPS spectrum of Mn 2p core levels showed that the main peaks of the Mn 2p3/2 and Mn 2p1/2 located at 640.8 and 652.4 eV

respectively.Since the Mn 2p3/2 core level spectrum for elemental Mn is at 639.0 eV

this reveals that in the CdMnTe samples the Mn atoms are bonded with other elements.CL spectrum showed that the energy gap of Mn+-implanted sample was 1.50 eV

which is larger than that of CdTe

indicating alloying of the sample and formation of CdMnTe.These results provide evidence for the ferroelectricity of CdMnTe

which is attributed to the difference between the radii of Mn2+ and Cd2+in the ternary compound of CdMnTe.

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