Carbon- and Oxygen-Free Cu(InGa)(SSe)2 Solar Cell with a 4.63% Conversion Efficiency by Electrostatic Spray Deposition
- Carbon- and Oxygen-Free Cu(InGa)(SSe)2 Solar Cell with a 4.63% Conversion Efficiency by Electrostatic Spray Deposition
- Hyun Yoon; Seung Heon Na; Jae Young Choi; Min Woo Kim; Hayong Kim; 안희상; 민병권; SeJin Ahn; Jae Ho Yun; Jihye Gwak; KyungHoon Yoon; Sanjay S. Kolekar; Maikel F. A. M. van Hest; Salem S. Al-Deyab; Mark T. Swihart; Sam S. Yoon
- CIGS; solution process; spray; solar cells; CIGSSe; thin film; electrostatic spray; carbon free; oxygen free
- Issue Date
- ACS Applied Materials & Interfaces
- VOL 6, NO 11, 8369-8377
- We have demonstrated the first example of carbon- and oxygen-free Cu(In,Ga)(SSe)2 (CIGSSe) absorber layers prepared by electrospraying a CuInGa (CIG) precursor followed by annealing, sulfurization, and selenization at elevated temperature. X-ray diffraction and scanning electron microscopy showed that the amorphous as-deposited (CIG) precursor film was converted into polycrystalline CIGSSe with a flat-grained morphology after post-treatment. The optimal post-treatment temperature was 300 °C for annealing and 500 °C for both sulfurization and selenization, with a ramp rate of 5 °C/min. The carbon impurities in the precursor film were removed by air annealing, and oxide that was formed during annealing was removed by sulfurization. The fabricated CIGSSe solar cell showed a conversion efficiency of 4.63% for a 0.44 cm2 area, with Voc = 0.4 V, Jsc = 21 mA/cm2, and FF = 0.53.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.