Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes
Raman spectroscopic analysis and Hall measurement of wurtzite copper indium sulfide (CuInS2) were carried out. Nanocrystalline wurtzite CuInS2 (CIS) was synthesized by a solvothermal reaction route for these studies. It is observed that the amount of sulfur source, time and temperature of the reacti...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2013
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| Online Access: | https://hdl.handle.net/10356/100439 http://hdl.handle.net/10220/17858 |
| _version_ | 1811695162041040896 |
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| author | Ho, John C. W. Batabyal, Sudip Kumar Pramana, Stevin S. Lum, Jiayi Pham, Viet T. Li, Dehui Xiong, Qihua Wong, Lydia Helena Tok, Alfred Iing Yoong |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Ho, John C. W. Batabyal, Sudip Kumar Pramana, Stevin S. Lum, Jiayi Pham, Viet T. Li, Dehui Xiong, Qihua Wong, Lydia Helena Tok, Alfred Iing Yoong |
| author_sort | Ho, John C. W. |
| collection | NTU |
| description | Raman spectroscopic analysis and Hall measurement of wurtzite copper indium sulfide (CuInS2) were carried out. Nanocrystalline wurtzite CuInS2 (CIS) was synthesized by a solvothermal reaction route for these studies. It is observed that the amount of sulfur source, time and temperature of the reaction are the key to control wurtzite phase formation of CuInS2. Wurtzite nanoflakes were formed at 150°C, with ethylenediamine as the selected solvent and the ratio of Cu:In:S precursor was kept at 1.1 : 1 : 5. The Hall measurement resulted in sheet resistivity, ρ, of ~2x105 Ω/sq, Hall coefficient of ~10 m2/C, mobility of ~0.5 cm2/V-s and hole concentration of ~7×1013 /cm2. Slight shift in the Raman spectra of 1-2 cm-1 was observed between wurtzite and roquesite CuInS2 and was attributed to the stoichiometric variation in Cu/In and/or changes in the chemical environments of the two crystal structures. |
| first_indexed | 2024-10-01T07:19:05Z |
| format | Journal Article |
| id | ntu-10356/100439 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:19:05Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1004392020-06-01T10:21:13Z Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes Ho, John C. W. Batabyal, Sudip Kumar Pramana, Stevin S. Lum, Jiayi Pham, Viet T. Li, Dehui Xiong, Qihua Wong, Lydia Helena Tok, Alfred Iing Yoong School of Materials Science & Engineering DRNTU::Engineering::Materials Raman spectroscopic analysis and Hall measurement of wurtzite copper indium sulfide (CuInS2) were carried out. Nanocrystalline wurtzite CuInS2 (CIS) was synthesized by a solvothermal reaction route for these studies. It is observed that the amount of sulfur source, time and temperature of the reaction are the key to control wurtzite phase formation of CuInS2. Wurtzite nanoflakes were formed at 150°C, with ethylenediamine as the selected solvent and the ratio of Cu:In:S precursor was kept at 1.1 : 1 : 5. The Hall measurement resulted in sheet resistivity, ρ, of ~2x105 Ω/sq, Hall coefficient of ~10 m2/C, mobility of ~0.5 cm2/V-s and hole concentration of ~7×1013 /cm2. Slight shift in the Raman spectra of 1-2 cm-1 was observed between wurtzite and roquesite CuInS2 and was attributed to the stoichiometric variation in Cu/In and/or changes in the chemical environments of the two crystal structures. 2013-11-26T07:30:14Z 2019-12-06T20:22:38Z 2013-11-26T07:30:14Z 2019-12-06T20:22:38Z 2012 2012 Journal Article Ho, J. C. W., Batabyal, S. K., Pramana, S. S., Lum, J., Pham, V. T., Li, D., Xiong, Q., Tok, A. I. Y., Wong, L. H., et al. (2012). Optical and Electrical Properties of Wurtzite Copper Indium Sulfide Nanoflakes. Materials Express, 2(4), 344-350. https://hdl.handle.net/10356/100439 http://hdl.handle.net/10220/17858 10.1166/mex.2012.1091 en Materials express © 2012 American Scientific Publishers |
| spellingShingle | DRNTU::Engineering::Materials Ho, John C. W. Batabyal, Sudip Kumar Pramana, Stevin S. Lum, Jiayi Pham, Viet T. Li, Dehui Xiong, Qihua Wong, Lydia Helena Tok, Alfred Iing Yoong Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes |
| title | Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes |
| title_full | Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes |
| title_fullStr | Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes |
| title_full_unstemmed | Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes |
| title_short | Optical and electrical properties of Wurtzite copper indium sulfide nanoflakes |
| title_sort | optical and electrical properties of wurtzite copper indium sulfide nanoflakes |
| topic | DRNTU::Engineering::Materials |
| url | https://hdl.handle.net/10356/100439 http://hdl.handle.net/10220/17858 |
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