Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate

A growth scheme at a low processing temperature for high crystalline-quality of ZnO nanostructures can be a prime stepping stone for the future of various optoelectronic devices manufactured on transparent plastic substrates. In this study, ZnO nanorods (NRs) grown by the hydrothermal method at 150...

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Main Authors:	Hafiz Muhammad Salman Ajmal, Fasihullah Khan, Kiyun Nam, Hae Young Kim, Sam Dong Kim
Format:	Article
Language:	English
Published:	MDPI AG 2020-06-01
Series:	Nanomaterials
Subjects:	UV detector codoping in ZnO ZnO nanorods plastic substrate spectral responsivity
Online Access:	https://www.mdpi.com/2079-4991/10/6/1225

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record_format	Article
spelling	doaj-15a00a5b89f547598a32609adcbae4352020-11-25T02:58:52ZengMDPI AGNanomaterials2079-49912020-06-01101225122510.3390/nano10061225Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic SubstrateHafiz Muhammad Salman Ajmal0Fasihullah Khan1Kiyun Nam2Hae Young Kim3Sam Dong Kim4Division of Electronics and Electrical Engineering, Dongguk University, Seoul 100–715, KoreaDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 100–715, KoreaDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 100–715, KoreaDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 100–715, KoreaDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 100–715, KoreaA growth scheme at a low processing temperature for high crystalline-quality of ZnO nanostructures can be a prime stepping stone for the future of various optoelectronic devices manufactured on transparent plastic substrates. In this study, ZnO nanorods (NRs) grown by the hydrothermal method at 150 °C through doping of transition metals (TMs), such as Co, Ni, or Co-plus-Ni, on polyethylene terephthalate substrates were investigated by various surface analysis methods. The TM dopants in ZnO NRs suppressed the density of various native defect-states as revealed by our photoluminescence and X-ray photoelectron spectroscopy analysis. Further investigation also showed the doping into ZnO NRs brought about a clear improvement in carrier mobility from 0.81 to 3.95 cm<sup>2</sup>/V-s as well as significant recovery in stoichiometric contents of oxygen. Ultra-violet photodetectors fabricated with Co-plus-Ni codoped NRs grown on an interdigitated electrode structure exhibited a high spectral response of ~137 A/W, on/off current ratio of ~135, and an improvement in transient response speed with rise-up and fall-down times of ~2.2 and ~3.1 s, respectively.https://www.mdpi.com/2079-4991/10/6/1225UV detectorcodoping in ZnOZnO nanorodsplastic substratespectral responsivity
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hafiz Muhammad Salman Ajmal Fasihullah Khan Kiyun Nam Hae Young Kim Sam Dong Kim
spellingShingle	Hafiz Muhammad Salman Ajmal Fasihullah Khan Kiyun Nam Hae Young Kim Sam Dong Kim Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate Nanomaterials UV detector codoping in ZnO ZnO nanorods plastic substrate spectral responsivity
author_facet	Hafiz Muhammad Salman Ajmal Fasihullah Khan Kiyun Nam Hae Young Kim Sam Dong Kim
author_sort	Hafiz Muhammad Salman Ajmal
title	Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate
title_short	Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate
title_full	Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate
title_fullStr	Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate
title_full_unstemmed	Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate
title_sort	ultraviolet photodetection based on high-performance co-plus-ni doped zno nanorods grown by hydrothermal method on transparent plastic substrate
publisher	MDPI AG
series	Nanomaterials
issn	2079-4991
publishDate	2020-06-01
description	A growth scheme at a low processing temperature for high crystalline-quality of ZnO nanostructures can be a prime stepping stone for the future of various optoelectronic devices manufactured on transparent plastic substrates. In this study, ZnO nanorods (NRs) grown by the hydrothermal method at 150 °C through doping of transition metals (TMs), such as Co, Ni, or Co-plus-Ni, on polyethylene terephthalate substrates were investigated by various surface analysis methods. The TM dopants in ZnO NRs suppressed the density of various native defect-states as revealed by our photoluminescence and X-ray photoelectron spectroscopy analysis. Further investigation also showed the doping into ZnO NRs brought about a clear improvement in carrier mobility from 0.81 to 3.95 cm<sup>2</sup>/V-s as well as significant recovery in stoichiometric contents of oxygen. Ultra-violet photodetectors fabricated with Co-plus-Ni codoped NRs grown on an interdigitated electrode structure exhibited a high spectral response of ~137 A/W, on/off current ratio of ~135, and an improvement in transient response speed with rise-up and fall-down times of ~2.2 and ~3.1 s, respectively.
topic	UV detector codoping in ZnO ZnO nanorods plastic substrate spectral responsivity
url	https://www.mdpi.com/2079-4991/10/6/1225
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Ultraviolet Photodetection Based on High-Performance Co-Plus-Ni Doped ZnO Nanorods Grown by Hydrothermal Method on Transparent Plastic Substrate

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