Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5360076 | Applied Surface Science | 2013 | 4 Pages |
Abstract
Band alignments of ZnO/CdSe nanocrystal quantum-dots (NQDs) heterojunctions are determined by ultraviolet photoelectron spectroscopy using synchrotron radiation source. To obtain ideal heterojunction interface, 1,2-ethanedithiol was used for CdSe NQDs as a ligand substitute. A type II band alignment of the ZnO/CdSe NQDs heterojunctions with changeable band offsets by varying the sizes of CdSe NQDs is concluded. The tunable band alignment of ZnO/CdSe NQDs heterojunctions is beneficial to the improvement of the design and fabrication of quantum-dot-sensitized solar cells.
Related Topics
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Physical and Theoretical Chemistry
Authors
Ruifeng Li, Chunfeng Cai, Lian Hu, Huizhen Wu, Wenhua Zhang, Junfa Zhu,