Molecular floating-gate single-electron transistor

Abstract We investigated reversible switching behaviors of a molecular floating-gate single-electron transistor (MFG-SET). The device consists of a gold nanoparticle-based SET and a few tetra-tert-butyl copper phthalocyanine (ttbCuPc) molecules; each nanoparticle (NP) functions as a Coulomb island....

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Autores principales:	Makoto Yamamoto, Yasuo Azuma, Masanori Sakamoto, Toshiharu Teranishi, Hisao Ishii, Yutaka Majima, Yutaka Noguchi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a0e82397701a42a9b47b5e20b58f67f4
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spelling	oai:doaj.org-article:a0e82397701a42a9b47b5e20b58f67f42021-12-02T15:06:25ZMolecular floating-gate single-electron transistor10.1038/s41598-017-01578-72045-2322https://doaj.org/article/a0e82397701a42a9b47b5e20b58f67f42017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01578-7https://doaj.org/toc/2045-2322Abstract We investigated reversible switching behaviors of a molecular floating-gate single-electron transistor (MFG-SET). The device consists of a gold nanoparticle-based SET and a few tetra-tert-butyl copper phthalocyanine (ttbCuPc) molecules; each nanoparticle (NP) functions as a Coulomb island. The ttbCuPc molecules function as photoreactive floating gates, which reversibly change the potential of the Coulomb island depending on the charge states induced in the ttbCuPc molecules by light irradiation or by externally applied voltages. We found that single-electron charging of ttbCuPc leads to a potential shift in the Coulomb island by more than half of its charging energy. The first induced device state was sufficiently stable; the retention time was more than a few hours without application of an external voltage. Moreover, the device exhibited an additional state when irradiated with 700 nm light, corresponding to doubly charged ttbCuPc. The life time of this additional state was several seconds, which is much shorter than that of the first induced state. These results clearly demonstrate an alternative method utilizing the unique functionality of the single molecule in nanoelectronics devices, and the potential application of MFG-SETs for investigating molecular charging phenomena.Makoto YamamotoYasuo AzumaMasanori SakamotoToshiharu TeranishiHisao IshiiYutaka MajimaYutaka NoguchiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Makoto Yamamoto Yasuo Azuma Masanori Sakamoto Toshiharu Teranishi Hisao Ishii Yutaka Majima Yutaka Noguchi Molecular floating-gate single-electron transistor
description	Abstract We investigated reversible switching behaviors of a molecular floating-gate single-electron transistor (MFG-SET). The device consists of a gold nanoparticle-based SET and a few tetra-tert-butyl copper phthalocyanine (ttbCuPc) molecules; each nanoparticle (NP) functions as a Coulomb island. The ttbCuPc molecules function as photoreactive floating gates, which reversibly change the potential of the Coulomb island depending on the charge states induced in the ttbCuPc molecules by light irradiation or by externally applied voltages. We found that single-electron charging of ttbCuPc leads to a potential shift in the Coulomb island by more than half of its charging energy. The first induced device state was sufficiently stable; the retention time was more than a few hours without application of an external voltage. Moreover, the device exhibited an additional state when irradiated with 700 nm light, corresponding to doubly charged ttbCuPc. The life time of this additional state was several seconds, which is much shorter than that of the first induced state. These results clearly demonstrate an alternative method utilizing the unique functionality of the single molecule in nanoelectronics devices, and the potential application of MFG-SETs for investigating molecular charging phenomena.
format	article
author	Makoto Yamamoto Yasuo Azuma Masanori Sakamoto Toshiharu Teranishi Hisao Ishii Yutaka Majima Yutaka Noguchi
author_facet	Makoto Yamamoto Yasuo Azuma Masanori Sakamoto Toshiharu Teranishi Hisao Ishii Yutaka Majima Yutaka Noguchi
author_sort	Makoto Yamamoto
title	Molecular floating-gate single-electron transistor
title_short	Molecular floating-gate single-electron transistor
title_full	Molecular floating-gate single-electron transistor
title_fullStr	Molecular floating-gate single-electron transistor
title_full_unstemmed	Molecular floating-gate single-electron transistor
title_sort	molecular floating-gate single-electron transistor
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a0e82397701a42a9b47b5e20b58f67f4
work_keys_str_mv	AT makotoyamamoto molecularfloatinggatesingleelectrontransistor AT yasuoazuma molecularfloatinggatesingleelectrontransistor AT masanorisakamoto molecularfloatinggatesingleelectrontransistor AT toshiharuteranishi molecularfloatinggatesingleelectrontransistor AT hisaoishii molecularfloatinggatesingleelectrontransistor AT yutakamajima molecularfloatinggatesingleelectrontransistor AT yutakanoguchi molecularfloatinggatesingleelectrontransistor
_version_	1718388468564885504

Molecular floating-gate single-electron transistor

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