Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 36, Pages 19604-19610Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp307235u
Keywords
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Funding
- China Scholarship Council
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ZnO nanowire arrays were functionalized with colloidal CdSe quantum dots stabilized by 3-mercaptopropionic acid to form hybrid devices. The photoconductivity of the nanowire/quantum-dot devices was studied under selective photoexcitation of the quantum dots, and it was found that the dynamics strongly depend on the gas environment. Desorption of surface oxygen from both the ZnO nanowires and the CdSe quantum dots, activated by electron tunnelling between the nanowires and the quantum dots, is found to be the dominating process that determines the dynamic of the photoconductivity in the hybrid nanowire/quantum-dot devices.
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