Using persistent photoconductivity to write a low-resistance path in SrTiO3

Abstract Materials with persistent photoconductivity (PPC) experience an increase in conductivity upon exposure to light that persists after the light is turned off. Although researchers have shown that this phenomenon could be exploited for novel memory storage devices, low temperatures (below 180 ...

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Autores principales:	Violet M. Poole, Slade J. Jokela, Matthew D. McCluskey
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/58c6d579da4d4ceb9b00342827aaf950
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spelling	oai:doaj.org-article:58c6d579da4d4ceb9b00342827aaf9502021-12-02T11:52:32ZUsing persistent photoconductivity to write a low-resistance path in SrTiO310.1038/s41598-017-07090-22045-2322https://doaj.org/article/58c6d579da4d4ceb9b00342827aaf9502017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07090-2https://doaj.org/toc/2045-2322Abstract Materials with persistent photoconductivity (PPC) experience an increase in conductivity upon exposure to light that persists after the light is turned off. Although researchers have shown that this phenomenon could be exploited for novel memory storage devices, low temperatures (below 180 K) were required. In the present work, two-point resistance measurements were performed on annealed strontium titanate (SrTiO3, or STO) single crystals at room temperature. After illumination with sub-gap light, the resistance decreased by three orders of magnitude. This markedly enhanced conductivity persisted for several days in the dark. Results from IR spectroscopy, electrical measurements, and exposure to a 405 nm laser suggest that contact resistance plays an important role. The laser was then used as an “optical pen” to write a low-resistance path between two contacts, demonstrating the feasibility of optically defined, transparent electronics.Violet M. PooleSlade J. JokelaMatthew D. McCluskeyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Violet M. Poole Slade J. Jokela Matthew D. McCluskey Using persistent photoconductivity to write a low-resistance path in SrTiO3
description	Abstract Materials with persistent photoconductivity (PPC) experience an increase in conductivity upon exposure to light that persists after the light is turned off. Although researchers have shown that this phenomenon could be exploited for novel memory storage devices, low temperatures (below 180 K) were required. In the present work, two-point resistance measurements were performed on annealed strontium titanate (SrTiO3, or STO) single crystals at room temperature. After illumination with sub-gap light, the resistance decreased by three orders of magnitude. This markedly enhanced conductivity persisted for several days in the dark. Results from IR spectroscopy, electrical measurements, and exposure to a 405 nm laser suggest that contact resistance plays an important role. The laser was then used as an “optical pen” to write a low-resistance path between two contacts, demonstrating the feasibility of optically defined, transparent electronics.
format	article
author	Violet M. Poole Slade J. Jokela Matthew D. McCluskey
author_facet	Violet M. Poole Slade J. Jokela Matthew D. McCluskey
author_sort	Violet M. Poole
title	Using persistent photoconductivity to write a low-resistance path in SrTiO3
title_short	Using persistent photoconductivity to write a low-resistance path in SrTiO3
title_full	Using persistent photoconductivity to write a low-resistance path in SrTiO3
title_fullStr	Using persistent photoconductivity to write a low-resistance path in SrTiO3
title_full_unstemmed	Using persistent photoconductivity to write a low-resistance path in SrTiO3
title_sort	using persistent photoconductivity to write a low-resistance path in srtio3
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/58c6d579da4d4ceb9b00342827aaf950
work_keys_str_mv	AT violetmpoole usingpersistentphotoconductivitytowritealowresistancepathinsrtio3 AT sladejjokela usingpersistentphotoconductivitytowritealowresistancepathinsrtio3 AT matthewdmccluskey usingpersistentphotoconductivitytowritealowresistancepathinsrtio3
_version_	1718394985651372032

Using persistent photoconductivity to write a low-resistance path in SrTiO3

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