Fabrication of a UV Photodetector Based on n-TiO2/p-CuMnO2 Heterostructures

The heterojunction based on n-TiO2 nanolayer/p-CuMnO2 thin film was achieved using an efficient two-step synthesis process for the fabrication of a UV photodetector. The first step consisted of obtaining the TiO<s...

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Autores principales:	Mircea Nicolaescu, Cornelia Bandas, Corina Orha, Viorel Şerban, Carmen Lazău, Simona Căprărescu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	heterojunction UV photodetector TiO<sub>2</sub>-CuMnO<sub>2</sub> Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/a916411c43994f7fbb12c5b786fbad58
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spelling	oai:doaj.org-article:a916411c43994f7fbb12c5b786fbad582021-11-25T17:16:40ZFabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures10.3390/coatings111113802079-6412https://doaj.org/article/a916411c43994f7fbb12c5b786fbad582021-11-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1380https://doaj.org/toc/2079-6412The heterojunction based on <i>n</i>-TiO<sub>2</sub> nanolayer/<i>p</i>-CuMnO<sub>2</sub> thin film was achieved using an efficient two-step synthesis process for the fabrication of a UV photodetector. The first step consisted of obtaining the TiO<sub>2</sub> nanolayer, which was grown on titan foil by thermal oxidation (Ti-TiO<sub>2</sub>). The second step consisted of CuMnO<sub>2</sub> thin film deposition onto the surface of Ti-TiO<sub>2</sub> using the Doctor Blade method. Techniques such as X-ray diffraction, UV-VIS analysis, SEM, and AFM morphologies were used for the investigation of the structural and morphological characteristics of the as-synthesized heterostructures. The Mott–Schottky analysis was performed in order to prove the <i>n</i>-TiO<sub>2</sub><i>/p</i>-CuMnO<sub>2</sub> junction. The <i>I</i>-<i>V</i> measurements of the <i>n</i>-TiO<sub>2</sub> nanolayer/<i>p</i>-CuMnO<sub>2</sub> thin film heterostructure confirm its diode characteristics under dark state, UV and visible illumination conditions. The obtained heterojunction, which is based on two types of semiconductors with different energy band structures, improves the separating results of charges, which is very important for high-performance UV photodetectors.Mircea NicolaescuCornelia BandasCorina OrhaViorel ŞerbanCarmen LazăuSimona CăprărescuMDPI AGarticleheterojunctionUV photodetectorTiO<sub>2</sub>-CuMnO<sub>2</sub>Engineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1380, p 1380 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heterojunction UV photodetector TiO<sub>2</sub>-CuMnO<sub>2</sub> Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	heterojunction UV photodetector TiO<sub>2</sub>-CuMnO<sub>2</sub> Engineering (General). Civil engineering (General) TA1-2040 Mircea Nicolaescu Cornelia Bandas Corina Orha Viorel Şerban Carmen Lazău Simona Căprărescu Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures
description	The heterojunction based on <i>n</i>-TiO<sub>2</sub> nanolayer/<i>p</i>-CuMnO<sub>2</sub> thin film was achieved using an efficient two-step synthesis process for the fabrication of a UV photodetector. The first step consisted of obtaining the TiO<sub>2</sub> nanolayer, which was grown on titan foil by thermal oxidation (Ti-TiO<sub>2</sub>). The second step consisted of CuMnO<sub>2</sub> thin film deposition onto the surface of Ti-TiO<sub>2</sub> using the Doctor Blade method. Techniques such as X-ray diffraction, UV-VIS analysis, SEM, and AFM morphologies were used for the investigation of the structural and morphological characteristics of the as-synthesized heterostructures. The Mott–Schottky analysis was performed in order to prove the <i>n</i>-TiO<sub>2</sub><i>/p</i>-CuMnO<sub>2</sub> junction. The <i>I</i>-<i>V</i> measurements of the <i>n</i>-TiO<sub>2</sub> nanolayer/<i>p</i>-CuMnO<sub>2</sub> thin film heterostructure confirm its diode characteristics under dark state, UV and visible illumination conditions. The obtained heterojunction, which is based on two types of semiconductors with different energy band structures, improves the separating results of charges, which is very important for high-performance UV photodetectors.
format	article
author	Mircea Nicolaescu Cornelia Bandas Corina Orha Viorel Şerban Carmen Lazău Simona Căprărescu
author_facet	Mircea Nicolaescu Cornelia Bandas Corina Orha Viorel Şerban Carmen Lazău Simona Căprărescu
author_sort	Mircea Nicolaescu
title	Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures
title_short	Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures
title_full	Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures
title_fullStr	Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures
title_full_unstemmed	Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures
title_sort	fabrication of a uv photodetector based on <i>n</i>-tio<sub>2</sub>/<i>p</i>-cumno<sub>2</sub> heterostructures
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a916411c43994f7fbb12c5b786fbad58
work_keys_str_mv	AT mirceanicolaescu fabricationofauvphotodetectorbasedoninitiosub2subipicumnosub2subheterostructures AT corneliabandas fabricationofauvphotodetectorbasedoninitiosub2subipicumnosub2subheterostructures AT corinaorha fabricationofauvphotodetectorbasedoninitiosub2subipicumnosub2subheterostructures AT viorelserban fabricationofauvphotodetectorbasedoninitiosub2subipicumnosub2subheterostructures AT carmenlazau fabricationofauvphotodetectorbasedoninitiosub2subipicumnosub2subheterostructures AT simonacaprarescu fabricationofauvphotodetectorbasedoninitiosub2subipicumnosub2subheterostructures
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Fabrication of a UV Photodetector Based on <i>n</i>-TiO<sub>2</sub>/<i>p</i>-CuMnO<sub>2</sub> Heterostructures

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