Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency

Abstract The unique optical properties of metal nitrides enhance many photoelectrical applications. In this work, a novel photodetector based on TiO2/TiN nanotubes was deposited on a porous aluminum oxide template (PAOT) for light power intensity and wavelength detection. The PAOT was fabricated by...

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Autores principales:	Asmaa M. Elsayed, Mohamed Rabia, Mohamed Shaban, Arafa H. Aly, Ashour M. Ahmed
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ddee4ab504ef49c191919f7856bbc916
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spelling	oai:doaj.org-article:ddee4ab504ef49c191919f7856bbc9162021-12-02T16:38:49ZPreparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency10.1038/s41598-021-96200-22045-2322https://doaj.org/article/ddee4ab504ef49c191919f7856bbc9162021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96200-2https://doaj.org/toc/2045-2322Abstract The unique optical properties of metal nitrides enhance many photoelectrical applications. In this work, a novel photodetector based on TiO2/TiN nanotubes was deposited on a porous aluminum oxide template (PAOT) for light power intensity and wavelength detection. The PAOT was fabricated by the Ni-imprinting technique through a two-step anodization method. The TiO2/TiN layers were deposited by using atomic layer deposition and magnetron sputtering, respectively. The PAOT and PAOT/TiO2/TiN were characterized by several techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray (EDX). The PAOT has high-ordered hexagonal nanopores with dimensions ~ 320 nm pore diameter and ~ 61 nm interpore distance. The bandgap of PAOT/TiO2 decreased from 3.1 to 2.2 eV with enhancing absorption of visible light after deposition of TiN on the PAOT/TiO2. The PAOT/TiO2/TiN as photodetector has a responsivity (R) and detectivity (D) of 450 mAW-1 and 8.0 × 1012 Jones, respectively. Moreover, the external quantum efficiency (EQE) was 9.64% at 62.5 mW.cm−2 and 400 nm. Hence, the fabricated photodetector (PD) has a very high photoelectrical response due to hot electrons from the TiN layer, which makes it very hopeful as a broadband photodetector.Asmaa M. ElsayedMohamed RabiaMohamed ShabanArafa H. AlyAshour M. AhmedNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Asmaa M. Elsayed Mohamed Rabia Mohamed Shaban Arafa H. Aly Ashour M. Ahmed Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency
description	Abstract The unique optical properties of metal nitrides enhance many photoelectrical applications. In this work, a novel photodetector based on TiO2/TiN nanotubes was deposited on a porous aluminum oxide template (PAOT) for light power intensity and wavelength detection. The PAOT was fabricated by the Ni-imprinting technique through a two-step anodization method. The TiO2/TiN layers were deposited by using atomic layer deposition and magnetron sputtering, respectively. The PAOT and PAOT/TiO2/TiN were characterized by several techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray (EDX). The PAOT has high-ordered hexagonal nanopores with dimensions ~ 320 nm pore diameter and ~ 61 nm interpore distance. The bandgap of PAOT/TiO2 decreased from 3.1 to 2.2 eV with enhancing absorption of visible light after deposition of TiN on the PAOT/TiO2. The PAOT/TiO2/TiN as photodetector has a responsivity (R) and detectivity (D) of 450 mAW-1 and 8.0 × 1012 Jones, respectively. Moreover, the external quantum efficiency (EQE) was 9.64% at 62.5 mW.cm−2 and 400 nm. Hence, the fabricated photodetector (PD) has a very high photoelectrical response due to hot electrons from the TiN layer, which makes it very hopeful as a broadband photodetector.
format	article
author	Asmaa M. Elsayed Mohamed Rabia Mohamed Shaban Arafa H. Aly Ashour M. Ahmed
author_facet	Asmaa M. Elsayed Mohamed Rabia Mohamed Shaban Arafa H. Aly Ashour M. Ahmed
author_sort	Asmaa M. Elsayed
title	Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency
title_short	Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency
title_full	Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency
title_fullStr	Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency
title_full_unstemmed	Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency
title_sort	preparation of hexagonal nanoporous al2o3/tio2/tin as a novel photodetector with high efficiency
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ddee4ab504ef49c191919f7856bbc916
work_keys_str_mv	AT asmaamelsayed preparationofhexagonalnanoporousal2o3tio2tinasanovelphotodetectorwithhighefficiency AT mohamedrabia preparationofhexagonalnanoporousal2o3tio2tinasanovelphotodetectorwithhighefficiency AT mohamedshaban preparationofhexagonalnanoporousal2o3tio2tinasanovelphotodetectorwithhighefficiency AT arafahaly preparationofhexagonalnanoporousal2o3tio2tinasanovelphotodetectorwithhighefficiency AT ashourmahmed preparationofhexagonalnanoporousal2o3tio2tinasanovelphotodetectorwithhighefficiency
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Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency

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