标题: | ZnO-Coated Carbon Nanotubes: Inter-Diffusion of Carboxyl Groups and Enhanced Photocurrent Generation |
作者: | Hung, Chia-I Wen, Hua-Chiang Lai, Yao-Cheng Chang, Shih-Hsin Chou, Wu-Ching Hsu, Wen-Kuang 电子物理学系 Department of Electrophysics |
关键字: | carbon nanotubes;defects;nanostructures;photocurrent;zinc oxide |
公开日期: | 16-三月-2015 |
摘要: | ZnO is a defect-governed oxide and emits light at both visible and UV regimes. This work employs atomic layer deposition to produce oxide particles on oxygenated carbon nanotubes, and the composites only show emission profiles at short wavelengths. The quenching of defect-related emissions at long wavelengths is verified, owing to carboxyl diffusion into oxygen vacancies, and doping is supported by ZnCO3 formation in oxide lattice. Fully coated tubes display an increased photocurrent and the quantum efficiency increases by 22% relative to the bare nanotubes. |
URI: | http://dx.doi.org/10.1002/cphc.201402736 http://hdl.handle.net/11536/124504 |
ISSN: | 1439-4235 |
DOI: | 10.1002/cphc.201402736 |
期刊: | CHEMPHYSCHEM |
Volume: | 16 |
起始页: | 812 |
结束页: | 816 |
显示于类别: | Articles |