Facile fabrication of n-ZnO nanorods/p-Cu2O heterojunction and its photodiode property
- Authors
- Kathalingam, A.; Vikraman, Dhanasekaran; Kim, Hyun-Seok; Park, Hui Joon
- Issue Date
- Apr-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- n-ZnO/p-Cu2O; Heterojunction; ZnO nanorods; Photodiode; Electrodeposition
- Citation
- OPTICAL MATERIALS, v.66, pp.122 - 130
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICAL MATERIALS
- Volume
- 66
- Start Page
- 122
- End Page
- 130
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20409
- DOI
- 10.1016/j.optmat.2017.01.051
- ISSN
- 0925-3467
- Abstract
- This report presents the fabrication and characterization of n-ZnO nanorods/p-Cu2O hetrojunction photo-diode. The ZnO nanorods (NRs) were deposited onto electrodeposited Cu2O thin film by hydro thermal method. The structural, morphological and optical properties of ZnO NRs and Cu2O films were studied by X-ray diffraction, scanning electronic microscopy, UV-Vis spectrophotometer, respectively. XRD patterns revealed that the as-grown films were highly crystalline nature with strong predominant orientation of (111) and (002) lattices corresponding to Cu2O and ZnO NRs, respectively. Current voltage (I-V) characteristic of n-ZnONR5/p-Cu2O structure confirmed the formation of heterojunction exhibiting diode-like rectifying nature. It showed enhanced conversion of UV light, which indicates the suitability of the simple and low-cost n-ZnO NRs/p-Cu2O heterojunction device for optoelectronic applications. The sandwich type ITO/n-ZnO NRs/p-Cu2O/ITO structure is quite novel approach for the efficient and complete collection of carriers in nanorods incorporated devices.
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