中国物理B ›› 2015, Vol. 24 ›› Issue (5): 56805-056805.doi: 10.1088/1674-1056/24/5/056805

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effect of thermal pretreatment of metal precursor on the properties of Cu2ZnSnS4 films

王威a, 沈鸿烈a b, 金佳乐a, 李金泽a, 马跃c   

  1. a College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    b Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    c Eoplly New Energy Technology Co., Ltd, Nantong 226612, China
  • 收稿日期:2014-08-16 修回日期:2014-12-10 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:

    Project Project of Jiangsu Province, China (Grant No. BE2012103), and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

Effect of thermal pretreatment of metal precursor on the properties of Cu2ZnSnS4 films

Wang Wei (王威)a, Shen Hong-Lie (沈鸿烈)a b, Jin Jia-Le (金佳乐)a, Li Jin-Ze (李金泽)a, Ma Yue (马跃)c   

  1. a College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    b Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    c Eoplly New Energy Technology Co., Ltd, Nantong 226612, China
  • Received:2014-08-16 Revised:2014-12-10 Online:2015-05-05 Published:2015-05-05
  • Contact: Shen Hong-Lie E-mail:hlshen@nuaa.edu.cn
  • About author:68.55.aj; 81.15.Gh; 88.40.JJ
  • Supported by:

    Project Project of Jiangsu Province, China (Grant No. BE2012103), and the Priority Academic Program Development of Jiangsu Higher Education Institutions, China.

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摘要：

Zn/Sn/Cu (CZT) stacks were prepared by RF magnetron sputtering. The stacks were pretreated at different temperatures (200 ℃, 300 ℃, 350 ℃, and 400 ℃) for 0.5 h and then followed by sulfurization at 500 ℃ for 2 h. Then, the structures, morphologies, and optical properties of the as-obtained Cu2ZnSnS4 (CZTS) films were studied by x-ray diffraction (XRD), Raman spectroscopy, UV–Vis–NIR, scanning electron microscope (SEM), and energy-dispersive x-ray spectroscopy (EDX). The XRD and Raman spectroscopy results indicated that the sample pretreated at 350 ℃ had no secondary phase and good crystallization. At the same time, SEM confirmed that it had large and dense grains. According to the UV–Vis–NIR spectrum, the sample had an absorption coefficient larger than 104 cm-1 in the visible light range and a band gap close to 1.5 eV.

关键词: Cu2ZnSnS4 (CZTS) films, radio-frequency magnetron sputtering, metal precursor pretreatment

Abstract:

Zn/Sn/Cu (CZT) stacks were prepared by RF magnetron sputtering. The stacks were pretreated at different temperatures (200 ℃, 300 ℃, 350 ℃, and 400 ℃) for 0.5 h and then followed by sulfurization at 500 ℃ for 2 h. Then, the structures, morphologies, and optical properties of the as-obtained Cu2ZnSnS4 (CZTS) films were studied by x-ray diffraction (XRD), Raman spectroscopy, UV–Vis–NIR, scanning electron microscope (SEM), and energy-dispersive x-ray spectroscopy (EDX). The XRD and Raman spectroscopy results indicated that the sample pretreated at 350 ℃ had no secondary phase and good crystallization. At the same time, SEM confirmed that it had large and dense grains. According to the UV–Vis–NIR spectrum, the sample had an absorption coefficient larger than 104 cm-1 in the visible light range and a band gap close to 1.5 eV.

Key words: Cu2ZnSnS4 (CZTS) films, radio-frequency magnetron sputtering, metal precursor pretreatment

中图分类号:  (Insulators)

  • 68.55.aj
81.15.Gh (Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.)) 88.40.jj (Silicon solar cells)