Paper Title:
Effect of Size and Stress Field on Electronic Properties of ZnO Nanowires
| Periodical | Materials Science Forum (Volume 724) |
|---|---|
| Main Theme | Eco-Materials Processing and Design XIII |
| Edited by | Jing Sun, Lian Gao, Hyungsun Kim, Jian Feng Yang, Tohru Sekino and Soo Wohn Lee |
| Pages | 209-212 |
| DOI | 10.4028/www.scientific.net/MSF.724.209 |
| Citation | Cheng He et al., 2012, Materials Science Forum, 724, 209 |
| Online since | June, 2012 |
| Authors | Cheng He, Wen Xue Zhang |
| Keywords | Density Function Theory (DFT), Nanogenerators, Stress Field, ZnO Nanowires |
| Price | US$ 28,- |
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Abstract
The effects of external stress field f on band gap Eg(D, f) of ZnO nanowires (NWs) in a diameter range of D = 0.6 - 2.0 nm are investigated using first-principles density-function theory for the future application as nanogenerators. It is shown that the Eg(D,0) values decreases with the increasing diameter of ZnO NWs without the stress field. Moreover, Eg(D, f) decreases with increasing of f due to the rapid drop of conduction band maximum of ZnO NWs when D is constant. These findings imply that Eg(D,f) functions of ZnO NWs can be modulated by manipulating D and f, which may be help for design of ZnO nanogenerators with a higher generation output voltage.
