One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach
The present work demonstrates a systematic approach for the synthesis of pure kesterite-phase Cu2ZnSnS4 (CZTS) nanocrystals with a uniform size distribution by a one-step, thioglycolic acid (TGA)-assisted hydrothermal route. The formation mechanism and the role of TGA in the formation of CZTS compou...
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2014-04-01
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| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.5.51 |
| _version_ | 1817978273783611392 |
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| author | Vincent Tiing Tiong John Bell Hongxia Wang |
| author_facet | Vincent Tiing Tiong John Bell Hongxia Wang |
| author_sort | Vincent Tiing Tiong |
| collection | DOAJ |
| description | The present work demonstrates a systematic approach for the synthesis of pure kesterite-phase Cu2ZnSnS4 (CZTS) nanocrystals with a uniform size distribution by a one-step, thioglycolic acid (TGA)-assisted hydrothermal route. The formation mechanism and the role of TGA in the formation of CZTS compound were thoroughly studied. It has been found that TGA interacted with Cu2+ to form Cu+ at the initial reaction stage and controlled the crystal-growth of CZTS nanocrystals during the hydrothermal reaction. The consequence of the reduction of Cu2+ to Cu+ led to the formation Cu2−xS nuclei, which acted as the crystal framework for the formation of CZTS compound. CZTS was formed by the diffusion of Zn2+ and Sn4+ cations to the lattice of Cu2−xS during the hydrothermal reaction. The as-synthesized CZTS nanocrystals exhibited strong light absorption over the range of wavelength beyond 1000 nm. The band gap of the material was determined to be 1.51 eV, which is optimal for application in photoelectric energy conversion device. |
| first_indexed | 2024-04-13T22:27:10Z |
| format | Article |
| id | doaj.art-c065e520f5cd49d89dd9f0c7ca4b2f93 |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-04-13T22:27:10Z |
| publishDate | 2014-04-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-c065e520f5cd49d89dd9f0c7ca4b2f932022-12-22T02:27:02ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862014-04-015143844610.3762/bjnano.5.512190-4286-5-51One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approachVincent Tiing Tiong0John Bell1Hongxia Wang2School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, AustraliaSchool of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, AustraliaSchool of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Brisbane, QLD 4001, AustraliaThe present work demonstrates a systematic approach for the synthesis of pure kesterite-phase Cu2ZnSnS4 (CZTS) nanocrystals with a uniform size distribution by a one-step, thioglycolic acid (TGA)-assisted hydrothermal route. The formation mechanism and the role of TGA in the formation of CZTS compound were thoroughly studied. It has been found that TGA interacted with Cu2+ to form Cu+ at the initial reaction stage and controlled the crystal-growth of CZTS nanocrystals during the hydrothermal reaction. The consequence of the reduction of Cu2+ to Cu+ led to the formation Cu2−xS nuclei, which acted as the crystal framework for the formation of CZTS compound. CZTS was formed by the diffusion of Zn2+ and Sn4+ cations to the lattice of Cu2−xS during the hydrothermal reaction. The as-synthesized CZTS nanocrystals exhibited strong light absorption over the range of wavelength beyond 1000 nm. The band gap of the material was determined to be 1.51 eV, which is optimal for application in photoelectric energy conversion device.https://doi.org/10.3762/bjnano.5.51Cu2ZnSnS4 nanocrystalsformation mechanismhydrothermalthioglycolic acid |
| spellingShingle | Vincent Tiing Tiong John Bell Hongxia Wang One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach Beilstein Journal of Nanotechnology Cu2ZnSnS4 nanocrystals formation mechanism hydrothermal thioglycolic acid |
| title | One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach |
| title_full | One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach |
| title_fullStr | One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach |
| title_full_unstemmed | One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach |
| title_short | One-step synthesis of high quality kesterite Cu2ZnSnS4 nanocrystals – a hydrothermal approach |
| title_sort | one step synthesis of high quality kesterite cu2znsns4 nanocrystals a hydrothermal approach |
| topic | Cu2ZnSnS4 nanocrystals formation mechanism hydrothermal thioglycolic acid |
| url | https://doi.org/10.3762/bjnano.5.51 |
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