Title :
Fabrication and characterization of Cu2ZnSn(S, Se)4 solar cells by spray-deposited precursor stacks
Author :
Wei-Chih Huang ; Xin Zeng ; Shih-Yuan Wei ; Tzu-Ying Lin ; Wong, Lydia Helena ; Chih-Huang Lai
Author_Institution :
Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Non-toxic, earth abundant absorber material CZTSSe thin film was successfully fabricated by spray pyrolysis, which is a low-cost, convenient and non-vacuum process. In this work, CZTSSe thin film is made from spray-deposited precursor stacks with subsequent sulfurization and selenization. The effect of the selenization time on the CZTSSe growth was investigated. X-ray diffraction, Raman spectrum and scanning electron microscope are used to characterize the precursors and CZTSSe thin films. The device is characterized by current-voltage measurements. By this process, the power conversion efficiency of the fabricated device reaches 3.1%.
Keywords :
Raman spectra; X-ray diffraction; copper compounds; electric current measurement; scanning electron microscopy; solar cells; voltage measurement; zinc compounds; Cu2ZnSn(S)4; Cu2ZnSn(Se)4; Raman spectrum; SEM; X-ray diffraction; XRD; current-voltage measurements; earth abundant absorber material thin film; nonvacuum process; power conversion efficiency; scanning electron microscope; selenization time; solar cells; spray-deposited precursor stacks; sulfurization; Annealing; Diffraction; Graphite; Heating; Indexes; Materials; X-ray diffraction; Cu2ZnSn(S, Se)4; kesterite; spray pyrolysis;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6924933
