Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films

Ultraviolet photodetectors have been fabricated from ZnO quantum dots/carbon nanodots hybrid films, and the introduction of carbon nanodots improves the performance of the photodetectors greatly. The photodetectors can be used to detect very weak ultraviolet signals (as low as 12 nW/cm(2)). The dete...

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Autores principales: Guo, Deng-Yang, Shan, Chong-Xin, Qu, Song-Nan, Shen, De-Zhen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264006/
https://www.ncbi.nlm.nih.gov/pubmed/25502422
http://dx.doi.org/10.1038/srep07469
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author Guo, Deng-Yang
Shan, Chong-Xin
Qu, Song-Nan
Shen, De-Zhen
author_facet Guo, Deng-Yang
Shan, Chong-Xin
Qu, Song-Nan
Shen, De-Zhen
author_sort Guo, Deng-Yang
collection PubMed
description Ultraviolet photodetectors have been fabricated from ZnO quantum dots/carbon nanodots hybrid films, and the introduction of carbon nanodots improves the performance of the photodetectors greatly. The photodetectors can be used to detect very weak ultraviolet signals (as low as 12 nW/cm(2)). The detectivity and noise equivalent power of the photodetector can reach 3.1 × 10(17) cmHz(1/2)/W and 7.8 × 10(−20) W, respectively, both of which are the best values ever reported for ZnO-based photodetectors. The mechanism for the high sensitivity of the photodetectors has been attributed to the enhanced carrier-separation at the ZnO/C interface.
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spelling pubmed-42640062014-12-16 Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films Guo, Deng-Yang Shan, Chong-Xin Qu, Song-Nan Shen, De-Zhen Sci Rep Article Ultraviolet photodetectors have been fabricated from ZnO quantum dots/carbon nanodots hybrid films, and the introduction of carbon nanodots improves the performance of the photodetectors greatly. The photodetectors can be used to detect very weak ultraviolet signals (as low as 12 nW/cm(2)). The detectivity and noise equivalent power of the photodetector can reach 3.1 × 10(17) cmHz(1/2)/W and 7.8 × 10(−20) W, respectively, both of which are the best values ever reported for ZnO-based photodetectors. The mechanism for the high sensitivity of the photodetectors has been attributed to the enhanced carrier-separation at the ZnO/C interface. Nature Publishing Group 2014-12-12 /pmc/articles/PMC4264006/ /pubmed/25502422 http://dx.doi.org/10.1038/srep07469 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Guo, Deng-Yang
Shan, Chong-Xin
Qu, Song-Nan
Shen, De-Zhen
Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films
title Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films
title_full Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films
title_fullStr Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films
title_full_unstemmed Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films
title_short Highly Sensitive Ultraviolet Photodetectors Fabricated from ZnO Quantum Dots/Carbon Nanodots Hybrid Films
title_sort highly sensitive ultraviolet photodetectors fabricated from zno quantum dots/carbon nanodots hybrid films
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4264006/
https://www.ncbi.nlm.nih.gov/pubmed/25502422
http://dx.doi.org/10.1038/srep07469
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