| Autor: |
T. Purnima A. Ruberu, Patrick Steven Dilsaver, Karen V. Torres, Javier Vela, Kyle J. Blakeney, Michelle J. Thompson |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
The Journal of Physical Chemistry Letters. 4:3918-3923 |
| ISSN: |
1948-7185 |
| DOI: |
10.1021/jz402048p |
| Popis: |
Cu2ZnSnS4 (CZTS) is a promising material for solar energy conversion, but synthesis of phase-pure, anisotropic CZTS nanocrystals remains a challenge. We demonstrate that the initial concentration (loading) of cationic precursors has a dramatic effect on the morphology (aspect ratio) and composition (internal architecture) of hexagonal wurtzite CZTS nanorods. Our experiments strongly indicate that Cu is the most reactive of the metal cations; Zn is next, and Sn is the least reactive. Using this reactivity series, we are able to purposely fine-tune the morphology (dots versus rods) and degree of axial phase segregation of CZTS nanocrystals. These results will improve our ability to fabricate CZTS nanostructures for photovoltaics and photocatalysis. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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