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ZnO Film UV Photodetector with Enhanced Performance: Heterojunction with CdMoO4 Microplates and the Hot Electron Injection Effect of Au Nanoparticles
Ouyang, W. X.; F. Teng; M. M. Jiang and X. S. Fang
2017
Source PublicationSmall
Volume13Issue:39
AbstractA novel CdMoO4-ZnO composite film is prepared by spin-coating CdMoO4 microplates on ZnO film and is constructed as a heterojunction photodetector (PD). With an optimized loading amount of CdMoO4 microplates, this composite film PD achieves a approximate to 18-fold higher responsivity than pure ZnO film PD at 5 V bias under 350 nm (0.15 mW cm(-2)) UV light illumination, and its decay time shortens to half of the original value. Furthermore, Au nanoparticles are then deposited to modify the CdMoO4-ZnO composite film, and the as-constructed photodetector with an optimized deposition time of Au nanoparticles yields an approximately two-fold higher photocurrent under the same condition, and the decay time reduces by half. The introduced CdMoO4 microplates form type-II heterojunctions with ZnO film and improve the photoelectric performance. The hot electrons from Au nanoparticles are injected into the CdMoO4-ZnO composite film, leading to the increased photocurrent. When the light is off, the Schottky barriers formed between Au nanoparticles and CdMoO4-ZnO composite film block the carrier transportation and accelerate the decay process of current. The study on Au-nanoparticle-modified CdMoO4-ZnO composite film provides a facile method to construct ZnO film based PD with novel structure and high photoelectric performance.
Indexed Bysci ; ei
Language英语
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/59146
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Ouyang, W. X.,F. Teng,M. M. Jiang and X. S. Fang. ZnO Film UV Photodetector with Enhanced Performance: Heterojunction with CdMoO4 Microplates and the Hot Electron Injection Effect of Au Nanoparticles[J]. Small,2017,13(39).
APA Ouyang, W. X.,F. Teng,&M. M. Jiang and X. S. Fang.(2017).ZnO Film UV Photodetector with Enhanced Performance: Heterojunction with CdMoO4 Microplates and the Hot Electron Injection Effect of Au Nanoparticles.Small,13(39).
MLA Ouyang, W. X.,et al."ZnO Film UV Photodetector with Enhanced Performance: Heterojunction with CdMoO4 Microplates and the Hot Electron Injection Effect of Au Nanoparticles".Small 13.39(2017).
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