Large Negative Photoresistivity in Amorphous NdNiO3 Film

A significant decrease in resistivity by 55% under blue lighting with ~0.4 J·mm−2 energy density is demonstrated in amorphous film of metal-insulator NdNiO3 at room temperature. This large negative photoresistivity contrasts with a small positive photore...

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Autores principales:	Alexandr Stupakov, Tomas Kocourek, Natalia Nepomniashchaia, Marina Tyunina, Alexandr Dejneka
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	rare-earth nickelates epitaxial perovskite films amorphous thin films photoconductivity Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/a47145aae14a40ebb5174df088c97daf
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spelling	oai:doaj.org-article:a47145aae14a40ebb5174df088c97daf2021-11-25T17:16:57ZLarge Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film10.3390/coatings111114112079-6412https://doaj.org/article/a47145aae14a40ebb5174df088c97daf2021-11-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1411https://doaj.org/toc/2079-6412A significant decrease in resistivity by 55% under blue lighting with ~0.4 J·mm<sup>−2</sup> energy density is demonstrated in amorphous film of metal-insulator NdNiO<sub>3</sub> at room temperature. This large negative photoresistivity contrasts with a small positive photoresistivity of 8% in epitaxial NdNiO<sub>3</sub> film under the same illumination conditions. The magnitude of the photoresistivity rises with the increasing power density or decreasing wavelength of light. By combining the analysis of the observed photoresistive effect with optical absorption and the resistivity of the films as a function of temperature, it is shown that photo-stimulated heating determines the photoresistivity in both types of films. Because amorphous films can be easily grown on a wide range of substrates, the demonstrated large photo(thermo)resistivity in such films is attractive for potential applications, e.g., thermal photodetectors and thermistors.Alexandr StupakovTomas KocourekNatalia NepomniashchaiaMarina TyuninaAlexandr DejnekaMDPI AGarticlerare-earth nickelatesepitaxial perovskite filmsamorphous thin filmsphotoconductivityEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1411, p 1411 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rare-earth nickelates epitaxial perovskite films amorphous thin films photoconductivity Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	rare-earth nickelates epitaxial perovskite films amorphous thin films photoconductivity Engineering (General). Civil engineering (General) TA1-2040 Alexandr Stupakov Tomas Kocourek Natalia Nepomniashchaia Marina Tyunina Alexandr Dejneka Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
description	A significant decrease in resistivity by 55% under blue lighting with ~0.4 J·mm<sup>−2</sup> energy density is demonstrated in amorphous film of metal-insulator NdNiO<sub>3</sub> at room temperature. This large negative photoresistivity contrasts with a small positive photoresistivity of 8% in epitaxial NdNiO<sub>3</sub> film under the same illumination conditions. The magnitude of the photoresistivity rises with the increasing power density or decreasing wavelength of light. By combining the analysis of the observed photoresistive effect with optical absorption and the resistivity of the films as a function of temperature, it is shown that photo-stimulated heating determines the photoresistivity in both types of films. Because amorphous films can be easily grown on a wide range of substrates, the demonstrated large photo(thermo)resistivity in such films is attractive for potential applications, e.g., thermal photodetectors and thermistors.
format	article
author	Alexandr Stupakov Tomas Kocourek Natalia Nepomniashchaia Marina Tyunina Alexandr Dejneka
author_facet	Alexandr Stupakov Tomas Kocourek Natalia Nepomniashchaia Marina Tyunina Alexandr Dejneka
author_sort	Alexandr Stupakov
title	Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
title_short	Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
title_full	Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
title_fullStr	Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
title_full_unstemmed	Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
title_sort	large negative photoresistivity in amorphous ndnio<sub>3</sub> film
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/a47145aae14a40ebb5174df088c97daf
work_keys_str_mv	AT alexandrstupakov largenegativephotoresistivityinamorphousndniosub3subfilm AT tomaskocourek largenegativephotoresistivityinamorphousndniosub3subfilm AT natalianepomniashchaia largenegativephotoresistivityinamorphousndniosub3subfilm AT marinatyunina largenegativephotoresistivityinamorphousndniosub3subfilm AT alexandrdejneka largenegativephotoresistivityinamorphousndniosub3subfilm
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Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film

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