A homogeneous dispersion of graphene oxide (GO) and zinc acetate was dipcoated and subsequently photo-annealed by deep UV irradiation to form ZnOrGO (DUV) nanocomposite thin film. ZnO nanowires were then grown by wetchemical synthesis on the ZnO-rGO (DUV) thin film. For comparison, ZnO nanowires were also grown on bare ZnO and ZnO-rGO (HT) thin films thermally annealed at 500C. X-ray diffraction and Raman spectroscopy of ZnOrGO (DUV) thin film revealed crystallization of ZnO and reduction of GO. The photoluminescence spectra of ZnO nanowires grown on ZnO-rGO (DUV) thin film showed high crystallinity. The current–voltage characteristics of ZnO nanowires grown on ZnO-rGO (DUV) thin film in dark and under UV showed a 15-fold increase in photocurrent as compared to ZnO nanowires grown on ZnO and ZnO-rGO (HT) thin films. The low-temperature photo-activated ZnOrGO thin films can be used as a template to grow one-dimensional ZnO nanowires with improved structural and optical properties and can pave the way for high-performance flexible device fabrication
Chakraborty, A., Pizzoferrato, R., Agresti, A., de Matteis, F., Orsini, A., Medaglia, P.g. (2018). Wet-Chemical Synthesis of ZnO Nanowires on Low-Temperature Photo-Activated ZnO-rGO Composite Thin Film with Enhanced Photoconduction. JOURNAL OF ELECTRONIC MATERIALS, 47(10), 5863-5869 [10.1007/s11664-018-6473-5].
Wet-Chemical Synthesis of ZnO Nanowires on Low-Temperature Photo-Activated ZnO-rGO Composite Thin Film with Enhanced Photoconduction
Chakraborty A.
Membro del Collaboration Group
;Pizzoferrato R.Membro del Collaboration Group
;Agresti A.Membro del Collaboration Group
;de Matteis F.Membro del Collaboration Group
;Orsini A.Membro del Collaboration Group
;Medaglia P. G.Membro del Collaboration Group
2018-01-01
Abstract
A homogeneous dispersion of graphene oxide (GO) and zinc acetate was dipcoated and subsequently photo-annealed by deep UV irradiation to form ZnOrGO (DUV) nanocomposite thin film. ZnO nanowires were then grown by wetchemical synthesis on the ZnO-rGO (DUV) thin film. For comparison, ZnO nanowires were also grown on bare ZnO and ZnO-rGO (HT) thin films thermally annealed at 500C. X-ray diffraction and Raman spectroscopy of ZnOrGO (DUV) thin film revealed crystallization of ZnO and reduction of GO. The photoluminescence spectra of ZnO nanowires grown on ZnO-rGO (DUV) thin film showed high crystallinity. The current–voltage characteristics of ZnO nanowires grown on ZnO-rGO (DUV) thin film in dark and under UV showed a 15-fold increase in photocurrent as compared to ZnO nanowires grown on ZnO and ZnO-rGO (HT) thin films. The low-temperature photo-activated ZnOrGO thin films can be used as a template to grow one-dimensional ZnO nanowires with improved structural and optical properties and can pave the way for high-performance flexible device fabrication| File | Dimensione | Formato | |
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