ZnO‐Coated Carbon Nanotubes: Inter‐Diffusion of Carboxyl Groups and Enhanced Photocurrent Generation. Issue 4 (8th January 2015)

• Record Type: Journal Article
• Authors: Hung, Chia‐I; Wen, Hua‐Chiang; Lai, Yao‐Cheng; Chang, Shih‐Hsin; Chou, Wu‐Ching; Hsu, Wen‐Kuang
• Is Part Of: Chemphyschem. Volume 16:Issue 4(2015)
• Page Start: 812
• Page End: 816
• Publication Date: 2015-01-08
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201402736
• Languages: English
• ISSNs: 1439-4235

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>