Light induced phase change in Cu2−xZn1.3SnS4 thin films
| Autor: | M. Krishna Surendra, Sunil Kumar Samji, Brajesh Tiwari, M. S. Ramachandra Rao |
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| Rok vydání: | 2014 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Condensed matter physics business.industry Alloy Laser beams Photovoltaic effects Stoichiometry Zinc Cu-poor Incident laser Kesterites Light-induced Photovoltaic performance Raman studies Thin film solar cells Thin films Photovoltaic effect engineering.material Stannite Laser Crystallographic defect law.invention symbols.namesake Optics law engineering symbols Kesterite Thin film business Raman spectroscopy |
| Zdroj: | Applied Physics Letters. 104:152106 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.4871705 |
| Popis: | Cu2ZnSnS4 and its alloy based thin film solar cells have shown better photovoltaic performance under Cu-poor and Zn-rich conditions. However, the effect of Cu-stoichiometry on the coexistence of kesterite (KS), stannite and/or partially disordered kesterite (PD-KS) phases and their influence on photovoltaic performance is not clearly understood. Raman studies were carried out on Cu2-xZn1.3SnS4 (x=0, 0.3, and 0.5) thin films by changing the intensity of the incident laser beam. It was observed that both Cu-stoichiometry and incident laser beam intensity induce a disorder in the system. Disorder induced transformation of KS I4 + to PD-KS 42m+ is explained by Raman studies. � 2014 AIP Publishing LLC. |
| Databáze: | OpenAIRE |
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