中国物理B ›› 2012, Vol. 21 ›› Issue (3): 38401-038401.doi: 10.1088/1674-1056/21/3/038401

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陈勤妙1 2,李振庆1 2,倪一2,程抒一2,窦晓鸣1 2 3   

  • 收稿日期:2011-04-29 修回日期:2011-10-23 出版日期:2012-02-15 发布日期:2012-02-15
  • 通讯作者: 窦晓鸣,xm.dou@yahoo.com.cn E-mail:xm.dou@yahoo.com.cn

Doctor-bladed Cu2ZnSnS4 light absorption layer for low-cost solar cell application

Chen Qin-Miao(陈勤妙)a)b), Li Zhen-Qing(李振庆)a)b), Ni Yi(倪一)b), Cheng Shu-Yi(程抒一)b), and Dou Xiao-Ming(窦晓鸣)a)b)c)   

  1. a. Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;
    b. School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
    c. Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
  • Received:2011-04-29 Revised:2011-10-23 Online:2012-02-15 Published:2012-02-15
  • Contact: Dou Xiao-Ming,xm.dou@yahoo.com.cn E-mail:xm.dou@yahoo.com.cn
  • Supported by:
    .

Abstract: The doctor-blade method is investigated for the preparation of Cu2ZnSnS4 films for low-cost solar cell application. Cu2ZnSnS4 precursor powder, the main raw material for the doctor-blade paste, is synthesized by a simple ball-milling process. The doctor-bladed Cu2ZnSnS4 films are annealed in N2 ambient under various conditions and characterized by X-ray diffraction, ultraviolent/vis spectrophotometry, scanning electron microscopy, and current-voltage (J-V) meansurement. Our experimental results indicate that (i) the X-ray diffraction peaks of the Cu2ZnSnS4 precursor powder each show a red shift of about 0.4°; (ii) the high-temperature annealing process can effectively improve the crystallinity of the doctor-bladed Cu2ZnSnS4, whereas an overlong annealing introduces defects; (iii) the band gap value of the doctor-bladed Cu2ZnSnS4 is around 1.41 eV; (iv) the short-circuit current density, the open-circuit voltage, the fill factor, and the efficiency of the best Cu2ZnSnS4 solar cell obtained with the superstrate structure of fluorine-doped tin oxide glass/TiO2/In2S3/Cu2ZnSnS4/Mo are 7.82 mA/cm2, 240 mV, 0.29, and 0.55%, respectively.

Key words: Cu2ZnSnS4, non-vacuum process, mechanochemical ball-milling process, doctor-blade method

中图分类号:  (Photoelectric conversion)

  • 84.60.Jt
88.40.H- (Solar cells (photovoltaics)) 88.40.hm (Cost of production of solar cells)