Solar-irradiation photodetectors based on ZnO nanoparticles with gold and indium electrodes

Yow Jon Lin; Yao Ming Chen; Hsing Cheng Chang; Ya Hui Chen

doi:10.1016/j.ijleo.2017.05.068

Solar-irradiation photodetectors based on ZnO nanoparticles with gold and indium electrodes

Yow Jon Lin, Yao Ming Chen, Hsing Cheng Chang, Ya Hui Chen

Graduate Institute of Photonics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The optoelectronic properties of the In/ZnO nanoparticles/In and Au/ZnO nanoparticles/Au devices under illumination by sunlight are determined. ZnO nanoparticles were prepared by the sol–gel method. It is shown that the value of photosensitivity for Au/ZnO nanoparticles/Au devices is larger than the value of photosensitivity for In/ZnO nanoparticles/In devices. This is because of the formation of the depletion region at the Au/ZnO interfaces. In order to understand the relationship between the visible-emission absorption and photosensitivity, sub-gap state generation is used to describe the mechanism for the sensitivity of ZnO nanoparticles to solar irradiation. A direct link between the sensitivity to solar irradiation, oxygen vacancies and the photo-response time is established.

Original language	English
Pages (from-to)	61-67
Number of pages	7
Journal	Optik
Volume	142
DOIs	https://doi.org/10.1016/j.ijleo.2017.05.068
Publication status	Published - 2017 Aug

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Solar-irradiation photodetectors based on ZnO nanoparticles with gold and indium electrodes",

abstract = "The optoelectronic properties of the In/ZnO nanoparticles/In and Au/ZnO nanoparticles/Au devices under illumination by sunlight are determined. ZnO nanoparticles were prepared by the sol–gel method. It is shown that the value of photosensitivity for Au/ZnO nanoparticles/Au devices is larger than the value of photosensitivity for In/ZnO nanoparticles/In devices. This is because of the formation of the depletion region at the Au/ZnO interfaces. In order to understand the relationship between the visible-emission absorption and photosensitivity, sub-gap state generation is used to describe the mechanism for the sensitivity of ZnO nanoparticles to solar irradiation. A direct link between the sensitivity to solar irradiation, oxygen vacancies and the photo-response time is established.",

author = "Lin, {Yow Jon} and Chen, {Yao Ming} and Chang, {Hsing Cheng} and Chen, {Ya Hui}",

year = "2017",

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doi = "10.1016/j.ijleo.2017.05.068",

language = "English",

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AU - Lin, Yow Jon

AU - Chen, Yao Ming

AU - Chang, Hsing Cheng

AU - Chen, Ya Hui

PY - 2017/8

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N2 - The optoelectronic properties of the In/ZnO nanoparticles/In and Au/ZnO nanoparticles/Au devices under illumination by sunlight are determined. ZnO nanoparticles were prepared by the sol–gel method. It is shown that the value of photosensitivity for Au/ZnO nanoparticles/Au devices is larger than the value of photosensitivity for In/ZnO nanoparticles/In devices. This is because of the formation of the depletion region at the Au/ZnO interfaces. In order to understand the relationship between the visible-emission absorption and photosensitivity, sub-gap state generation is used to describe the mechanism for the sensitivity of ZnO nanoparticles to solar irradiation. A direct link between the sensitivity to solar irradiation, oxygen vacancies and the photo-response time is established.

AB - The optoelectronic properties of the In/ZnO nanoparticles/In and Au/ZnO nanoparticles/Au devices under illumination by sunlight are determined. ZnO nanoparticles were prepared by the sol–gel method. It is shown that the value of photosensitivity for Au/ZnO nanoparticles/Au devices is larger than the value of photosensitivity for In/ZnO nanoparticles/In devices. This is because of the formation of the depletion region at the Au/ZnO interfaces. In order to understand the relationship between the visible-emission absorption and photosensitivity, sub-gap state generation is used to describe the mechanism for the sensitivity of ZnO nanoparticles to solar irradiation. A direct link between the sensitivity to solar irradiation, oxygen vacancies and the photo-response time is established.

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