A supersensitive, ultrafast, and broadband light-harvesting scheme employing carbon nanotube/tio2 core-shell nanowire geometry

Chia Yang Hsu; Der Hsien Lien; Jr Hau He

doi:10.1364/n3.2013.nsa3a.28

A supersensitive, ultrafast, and broadband light-harvesting scheme employing carbon nanotube/tio₂ core-shell nanowire geometry

Chia Yang Hsu, Der Hsien Lien, Jr Hau He^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We demonstrate a novel, feasible strategy on practical application of one-dimensional photodetectors by integrating carbon nanotube and TiO₂ in a core-shell fashion for breaking the compromise between the photogain and the response/recovery speed. Radial Schottky barriers between carbon nanotube cores and TiO₂ shells and surface states at TiO₂ shell surface regulate electron transport and also facilitate the separation of photo-generated electrons and holes, leading to ultrahigh photogain (G = 1.4×104) and the ultrashort response/recovery times (4.3/10.2 ms). Additionally, radial Schottky junction and defect band absorption broaden the detection range (UV-visible). The concept using metallic core-oxide shell geometry with radial Schottky barriers holds potential to paves a new way to realize nanostructured photodetectors in a practical use.

Original language	English (US)
Title of host publication	Nanophotonics, Nanoelectronics and Nanosensor, N3 2013
Publisher	Optical Society of America (OSA)
Pages	NSa3A.28
ISBN (Print)	9781557529763
DOIs	https://doi.org/10.1364/n3.2013.nsa3a.28
State	Published - 2013
Externally published	Yes
Event	Nanophotonics, Nanoelectronics and Nanosensor, N3 2013 - Wuhan, China Duration: May 25 2013 → May 26 2013

Publication series

Name	Nanophotonics, Nanoelectronics and Nanosensor, N3 2013

Other

Other	Nanophotonics, Nanoelectronics and Nanosensor, N3 2013
Country/Territory	China
City	Wuhan
Period	05/25/13 → 05/26/13

ASJC Scopus subject areas

Condensed Matter Physics
Atomic and Molecular Physics, and Optics

Access to Document

10.1364/n3.2013.nsa3a.28

Cite this

Hsu, C. Y., Lien, D. H., & He, J. H. (2013). A supersensitive, ultrafast, and broadband light-harvesting scheme employing carbon nanotube/tio₂ core-shell nanowire geometry. In Nanophotonics, Nanoelectronics and Nanosensor, N3 2013 (pp. NSa3A.28). (Nanophotonics, Nanoelectronics and Nanosensor, N3 2013). Optical Society of America (OSA). https://doi.org/10.1364/n3.2013.nsa3a.28

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abstract = "We demonstrate a novel, feasible strategy on practical application of one-dimensional photodetectors by integrating carbon nanotube and TiO2 in a core-shell fashion for breaking the compromise between the photogain and the response/recovery speed. Radial Schottky barriers between carbon nanotube cores and TiO2 shells and surface states at TiO2 shell surface regulate electron transport and also facilitate the separation of photo-generated electrons and holes, leading to ultrahigh photogain (G = 1.4×104) and the ultrashort response/recovery times (4.3/10.2 ms). Additionally, radial Schottky junction and defect band absorption broaden the detection range (UV-visible). The concept using metallic core-oxide shell geometry with radial Schottky barriers holds potential to paves a new way to realize nanostructured photodetectors in a practical use.",

author = "Hsu, {Chia Yang} and Lien, {Der Hsien} and He, {Jr Hau}",

year = "2013",

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Hsu, CY, Lien, DH & He, JH 2013, A supersensitive, ultrafast, and broadband light-harvesting scheme employing carbon nanotube/tio₂ core-shell nanowire geometry. in Nanophotonics, Nanoelectronics and Nanosensor, N3 2013. Nanophotonics, Nanoelectronics and Nanosensor, N3 2013, Optical Society of America (OSA), pp. NSa3A.28, Nanophotonics, Nanoelectronics and Nanosensor, N3 2013, Wuhan, China, 05/25/13. https://doi.org/10.1364/n3.2013.nsa3a.28

A supersensitive, ultrafast, and broadband light-harvesting scheme employing carbon nanotube/tio₂ core-shell nanowire geometry. / Hsu, Chia Yang; Lien, Der Hsien; He, Jr Hau.
Nanophotonics, Nanoelectronics and Nanosensor, N3 2013. Optical Society of America (OSA), 2013. p. NSa3A.28 (Nanophotonics, Nanoelectronics and Nanosensor, N3 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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