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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Wozny, Sarah Yao, Kun Cao, Baobao Marmon, Jason Zhou, Weilie Rai, Satish C. Wang, Kai Chen, Jiajun Yan, Yanfa Zhang, Yong |
| Copyright Year | 2014 |
| Abstract | Achieving a high-quality interface is of great importance in core–shell nanowire solar cells, as it significantly inhibits interfacial recombination and thus improves the photovoltaic performance. Combining thermal evaporation of CdSe and pulsed laser deposition of ZnTe, we successfully synthesized nearly lattice matched all wurtzite CdSe/ZnTe core–shell nanowires on silicon substrates. Comprehensive morphological and structural characterizations revealed that a wurtzite ZnTe shell layer epitaxially grows over a wurtzite CdSe core nanowire with an abrupt interface. Further optical studies confirmed a high-quality interface and demonstrated efficient charge separation induced by the type-II band alignment. A representative photovoltaic device has been demonstrated and yielded an energy-conversion efficiency of 1.7% which can be further improved by surface passivation. The all-wurtzite core–shell nanowire with an epitaxial interface offers an attractive platform to explore the piezo-phototronic effect and promises an efficient hybrid nano-sized, energy harvesting system. |
| Starting Page | 3679 |
| Ending Page | 3685 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20403364 |
| Volume Number | 6 |
| Issue Number | 7 |
| Journal | Nanoscale |
| DOI | 10.1039/c3nr06137j |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Solar cell Wurtzite Carrier generation and recombination Nanowire Pulsed laser deposition Crystal structure Passivation (chemistry) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology |
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