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Growth and Characterization of the Evaporated Quaternary Absorber Cu2FeSnS4 for Solar Cell Applications.
- Source :
- Journal of Electronic Materials; Jul2018, Vol. 47 Issue 7, p3577-3584, 8p
- Publication Year :
- 2018
-
Abstract
- Cu<subscript>2</subscript>FeSnS<subscript>4</subscript> (CFTS) was synthesized by direct fusion of high-purity elemental copper, iron, tin and sulfur. CFTS thin films were deposited on glass substrates heated by single source vacuum thermal evaporation, after which the obtained samples were annealed under a sulfur atmosphere in a sealed quartz tube at 400°C for 1 h in order to optimize the CFTS stannite phase. The substrate temperature was varied from room temperature to 200°C. The formation of a stannite structure with (112), (200) and (004) planes in the powder and thin films was confirmed using x-ray diffraction measurements and the crystallites were found to have a preferred orientation along the (112) direction. Optical measurements analysis showed that after the sulfurization process the layers have a relatively high absorption coefficient close to 10<superscript>5</superscript> cm<superscript>−1</superscript> in the visible spectrum. The films show a direct optical band gap in the range 1.30-1.63 eV for substrate temperature varied from room temperature to 200°C. All samples revealed p-type conductivity as determined by the hot probe method. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03615235
- Volume :
- 47
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Electronic Materials
- Publication Type :
- Academic Journal
- Accession number :
- 129952143
- Full Text :
- https://doi.org/10.1007/s11664-018-6202-0