Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors

Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors

Quasi-monocrystal ZnO film grown using the hydrothermal growth method is used for the fabrication of Cu2O/ZnO heterojunction (HJ) ultraviolet photodetectors (UV-PDs). The HJ was formed via the sputtering deposition of p-type Cu2O onto hydrothermally grown ZnO film (HTG-ZnO-film). The effect of annea...

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Main Authors: Yung-Chun Tu, Shui-Jinn Wang, Tseng-Hsing Lin, Chien-Hsiung Hung, Tsung-Che Tsai, Ru-Wen Wu, Kai-Ming Uang, Tron-Min Chen
Format: Article
Language:English
Published: Hindawi Limited 2015-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/2015/261372
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spelling doaj-83f136511cf1478ba3d46d5b4a2638a82020-11-24T21:06:31ZengHindawi LimitedInternational Journal of Photoenergy1110-662X1687-529X2015-01-01201510.1155/2015/261372261372Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet PhotodetectorsYung-Chun Tu0Shui-Jinn Wang1Tseng-Hsing Lin2Chien-Hsiung Hung3Tsung-Che Tsai4Ru-Wen Wu5Kai-Ming Uang6Tron-Min Chen7Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, TaiwanDepartment of Electrical Engineering, Wu Feng University, Chiayi 621, TaiwanDepartment of Electrical Engineering, Wu Feng University, Chiayi 621, TaiwanQuasi-monocrystal ZnO film grown using the hydrothermal growth method is used for the fabrication of Cu2O/ZnO heterojunction (HJ) ultraviolet photodetectors (UV-PDs). The HJ was formed via the sputtering deposition of p-type Cu2O onto hydrothermally grown ZnO film (HTG-ZnO-film). The effect of annealing temperature in the nitrogen ambient on the photoluminescence spectra of the synthesized ZnO film was studied. The optoelectronic properties of Cu2O/ZnO film with various Cu2O thicknesses (250–750 nm) under UV light (365 nm; intensity: 3 mW/cm2) were determined. The UV sensitivity of the HTG-ZnO-film-based UV-PDs and the sputtered ZnO-film-based UV-PDs were 55.6-fold (SHTG) and 8.8-fold (Ssputter), respectively. The significant gain in sensitivity (SHTG/Ssputter = 630%) of the proposed ZnO-film-based device compared to that for the device based on sputtered film can be attributed to the improved photoelectric properties of quasi-monocrystal ZnO film.http://dx.doi.org/10.1155/2015/261372
collection DOAJ
language English
format Article
sources DOAJ
author Yung-Chun Tu
Shui-Jinn Wang
Tseng-Hsing Lin
Chien-Hsiung Hung
Tsung-Che Tsai
Ru-Wen Wu
Kai-Ming Uang
Tron-Min Chen
spellingShingle Yung-Chun Tu
Shui-Jinn Wang
Tseng-Hsing Lin
Chien-Hsiung Hung
Tsung-Che Tsai
Ru-Wen Wu
Kai-Ming Uang
Tron-Min Chen
Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors
International Journal of Photoenergy
author_facet Yung-Chun Tu
Shui-Jinn Wang
Tseng-Hsing Lin
Chien-Hsiung Hung
Tsung-Che Tsai
Ru-Wen Wu
Kai-Ming Uang
Tron-Min Chen
author_sort Yung-Chun Tu
title Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors
title_short Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors
title_full Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors
title_fullStr Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors
title_full_unstemmed Hydrothermal Growth of Quasi-Monocrystal ZnO Thin Films and Their Application in Ultraviolet Photodetectors
title_sort hydrothermal growth of quasi-monocrystal zno thin films and their application in ultraviolet photodetectors
publisher Hindawi Limited
series International Journal of Photoenergy
issn 1110-662X
1687-529X
publishDate 2015-01-01
description Quasi-monocrystal ZnO film grown using the hydrothermal growth method is used for the fabrication of Cu2O/ZnO heterojunction (HJ) ultraviolet photodetectors (UV-PDs). The HJ was formed via the sputtering deposition of p-type Cu2O onto hydrothermally grown ZnO film (HTG-ZnO-film). The effect of annealing temperature in the nitrogen ambient on the photoluminescence spectra of the synthesized ZnO film was studied. The optoelectronic properties of Cu2O/ZnO film with various Cu2O thicknesses (250–750 nm) under UV light (365 nm; intensity: 3 mW/cm2) were determined. The UV sensitivity of the HTG-ZnO-film-based UV-PDs and the sputtered ZnO-film-based UV-PDs were 55.6-fold (SHTG) and 8.8-fold (Ssputter), respectively. The significant gain in sensitivity (SHTG/Ssputter = 630%) of the proposed ZnO-film-based device compared to that for the device based on sputtered film can be attributed to the improved photoelectric properties of quasi-monocrystal ZnO film.
url http://dx.doi.org/10.1155/2015/261372
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AT shuijinnwang hydrothermalgrowthofquasimonocrystalznothinfilmsandtheirapplicationinultravioletphotodetectors
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