Synthesis of Core-shell Structure In2Se3/Cuse Micro/Nano-powders Followed by Coated-rapid Heating Treatment Method for Preparing CuInSe2 Thin Films

doi:10.15541/jim20160179

Abstract

Abstract:

Different In₂Se₃/CuSe nano-powders were successfully fabricated by ultrasound and microwave solvothermal, atmospheric pressure, or high pressure solvothermal methods. Then the thin film solar cell absorbent layer was prepared through coated-rapid heating treatment system using above nano-powders. The phase, morphology and composition of the powders and CIS film were characterized by XRD, Raman, FESEM, and TEM. The results showed that the ultrasonic microwave solvothermal and atmospheric pressure solvothermal methods produced a mixture of In₂Se₃/CuSe. However, high pressure solvothermal method obtained core-shell structure In₂Se₃/CuSe powders (In₂Se₃-core, CuSe-shell). In addition, FESEM analysis revealed that the In₂Se₃/CuSe powders prepared by high pressure solvothermal method were easier to produce smooth and dense CIS film. The fabricated CIS thin-film solar cell was demonstrated its photoelectric conversion property with open-circuit voltage of 50 mV and short-circuit current density of 8 mA/cm².

Key words: CIS, solvothermal method, In₂Se₃/CuSe, core-Shell, coating method

CLC Number:

TN304

LI Bin, LI Ying-Lian, MO Shu-Yi, CHEN Ming-Guang, WANG Dong-Sheng, LONG Fei. Synthesis of Core-shell Structure In₂Se₃/Cuse Micro/Nano-powders Followed by Coated-rapid Heating Treatment Method for Preparing CuInSe₂ Thin Films[J]. Journal of Inorganic Materials, 2016, 31(10): 1135-1140.

Figures/Tables 7

Fig. 1 XRD pattern (a), FESEM (b) and TEM (c) images of M powder samples

Fig. 2 XRD patterns of N powder samples synthesized by different methods (a) Ultrasound and microwave solvothermal synthesis method; (b) Atmospheric pressure synthesis method; (c) High pressure solvothermal synthesis method

Fig. 3 FESEM images of N powder samples synthesized by different methods (a) Ultrasound and microwave solvothermal method; (b) Atmospheric pressure method; (c) High pressure solvothermal method

Fig. 4 TEM image of In2Se3/CuSe powders synthesized by high pressure solvothermal method

Fig. 5 Cross-section and surface FESEM images of CIS thin film after RTP (a) Ultrasound and microwave solvothermal synthesis method; (b) Atmospheric pressure synthesis method; (c) High pressure solvothermal synthesis method

Fig. 6 XRD pattern and Raman spectra of the CIS thin film after RTP (a, b) High pressure solvothermal method; (c) Ultrasound and microwave solvothermal method; (d) Atmospheric pressure method

Fig. 7 Cross-section SEM images of assembled CIS thin film solar cell

References 9

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Synthesis of Core-shell Structure In₂Se₃/Cuse Micro/Nano-powders Followed by Coated-rapid Heating Treatment Method for Preparing CuInSe₂ Thin Films

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