Improvement of n-ZnO/p-Si photodiodes by embedding of silver nanoparticles

Zhan Shuo Hu, Fei Yi Hung, Shoou Jinn Chang, Kuan Jen Chen, Yi Wei Tseng, Bohr Ran Huang, Bo Cheng Lin, Wei Yang Chou, Jay Chang

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

The photo-current of n-ZnO/p-Si heterojunction photodiodes was improved by embedding Ag nanoparticles in the interface (ZnO/nano-PAg/p-Si), and the ratio between photo- and dark-current increased by about three orders more than that of a n-ZnO/p-Si specimen. The improvement in the photo-current resulted from the light scattering of embedded Ag nanoparticles. The I-V curve of n-ZnO/p-Si degraded after thermal treatment (A-ZnO/p-Si) because the silicon robbed the oxygen from ZnO to form amorphous silicon dioxide and left an oxygen vacancy. Notably, the properties of ZnO/nano-PAg/p-Si were better in the time-dependent photoresponse under 10 V bias. Ag nanoparticles (15-20 nm) scattered the UV light randomly and increased the probability for the absorption of ZnO to enhance the properties of the photodiode.

原文English
頁(從 - 到)4757-4763
頁數7
期刊Journal of Nanoparticle Research
13
發行號10
DOIs
出版狀態Published - 2011 十月

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 原子與分子物理與光學
  • 建模與模擬
  • 材料科學(全部)
  • 凝聚態物理學

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