Large Negative Photoresistivity in Amorphous NdNiO<sub>3</sub> Film
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 photore...
Guardado en:
Autores principales: | , , , , |
---|---|
Formato: | article |
Lenguaje: | EN |
Publicado: |
MDPI AG
2021
|
Materias: | |
Acceso en línea: | https://doaj.org/article/a47145aae14a40ebb5174df088c97daf |
Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
id |
oai:doaj.org-article:a47145aae14a40ebb5174df088c97daf |
---|---|
record_format |
dspace |
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 |
_version_ |
1718412550138232832 |