Structure and Optical Properties of Cu-doped SnS Thin Films Prepared by PLD

LIU Lei; YU Liang; LI Xue-liu; WANG Zhuang-bing; LIANG Qi

doi:10.3788/fgxb20153611.1311

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Structure and Optical Properties of Cu-doped SnS Thin Films Prepared by PLD

更新时间：2020-08-12

- Structure and Optical Properties of Cu-doped SnS Thin Films Prepared by PLD
- Chinese Journal of Luminescence Vol. 36, Issue 11, Pages: 1311-1319(2015)
- 作者机构：
  
  合肥工业大学电子科学与应用物理学院, 安徽合肥 230009
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153611.1311
  CLC： O484;TN304
- Received：31 July 2015，
  
  Revised：25 August 2015，
  
  Published：10 November 2015
- 稿件说明：
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刘磊, 余亮, 李学留等. PLD制备的Cu掺杂SnS薄膜的结构和光学特性[J]. 发光学报, 2015,36(11): 1311-1319

LIU Lei, YU Liang, LI Xue-liu etc. Structure and Optical Properties of Cu-doped SnS Thin Films Prepared by PLD[J]. Chinese Journal of Luminescence, 2015,36(11): 1311-1319
刘磊, 余亮, 李学留等. PLD制备的Cu掺杂SnS薄膜的结构和光学特性[J]. 发光学报, 2015,36(11): 1311-1319 DOI： 10.3788/fgxb20153611.1311.

LIU Lei, YU Liang, LI Xue-liu etc. Structure and Optical Properties of Cu-doped SnS Thin Films Prepared by PLD[J]. Chinese Journal of Luminescence, 2015,36(11): 1311-1319 DOI： 10.3788/fgxb20153611.1311.

摘要

利用脉冲激光沉积(PLD)在玻璃衬底上制备了Cu掺杂SnS薄膜.靶材是由SnS和Cu

S粉末混合压制而成(Cu和Sn的量比分别为0%、2.5%、5%、7.5%和10%).利用X射线衍射(XRD)、拉曼光谱仪(Raman)、原子力显微镜(AFM)、紫外-可见-近红外分光光度计(UV-Vis-NIR)、Keithley 4200-SCS半导体参数分析仪研究了Cu掺杂量对SnS薄膜的晶体结构、表面形貌、光学性质和电学性能的影响.结果表明:所制备的SnS薄膜样品沿(111)晶面择优取向生长

SnS :5%Cu薄膜的结晶质量最好且具有SnS特征拉曼峰.随着Cu掺杂量的增大

平均颗粒尺寸逐渐增大.不同Cu掺杂量的薄膜在可见光范围内的吸收系数均为10

-1

数量级.SnS :5%Cu薄膜的禁带宽度

为2.23 eV

光暗电导率比值为2.59.同时

在玻璃衬底上制备了p-SnS :Cu/n-ZnS 异质结器件

器件在暗态及光照的条件下均有良好的整流特性

并具有较弱的光伏特性.

Abstract

Cu doped SnS thin films were grown on the glass substrates by pulsed laser deposition. The targets were pressed by the mixture of SnS and Cu

S powder (Cu and Sn molar ratios were 0%

2.5%

7.5%

and 10%

respectively). The effects of Cu doping content on the microstructural

morphological

optical and electrical properties of SnS thin films were studied by X-ray diffraction (XRD)

laser Raman spectrometry

atomic force microscopy (AFM)

ultraviolet-visible-near infrared spectrophotometer (UV-Vis-NIR)

and Keithley 4200-SCS semiconductor parameter analyzer. The results show that the films grow preferentially oriented in (111) plane

and SnS :5%Cu film has the excellent crystalline and Raman characteristic peaks. With the increasing of Cu doping content

the average particle sizes of the films increase. The absorption coefficient of the film in the visible region is the order of 10

-1

for different Cu doping content. The direct band gap of SnS :5%Cu film is 2.23 eV

and the ratio of photo-conductivity to dark-conductivity is 2.59. Finally

p-SnS :Cu/n-ZnS heterojuction device was fabricated on the glass substrate. The device exhibits good rectifying behaviors in dark and under illumination

and weak photovoltaic properties.

关键词

Keywords

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Related Institution

College of Intelligent Systems Science and Engineering， Hubei Minzu University

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合肥工业大学化学与化工学院, 安徽合肥 230009

School of Chemistry and Environmental Engineering, Changchun University of Science and Technology

合肥工业大学化学与化工学院

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