Carbon nanotube active-matrix backplanes for mechanically flexible visible light and X-ray imagers

Toshitake Takahashi; Zhibin Yu; Kevin Chen; Daisuke Kiriya; Chuan Wang; Kuniharu Takei; Hiroshi Shiraki; Teresa Chen; Biwu Ma; Ali Javey

doi:10.1021/nl403001r

Carbon nanotube active-matrix backplanes for mechanically flexible visible light and X-ray imagers

Toshitake Takahashi
, Zhibin Yu
, Kevin Chen
, Daisuke Kiriya
, Chuan Wang
, Kuniharu Takei
, Hiroshi Shiraki
, Teresa Chen
, Biwu Ma
, Ali Javey

Department of Electrical & Systems Engineering

Research output: Contribution to journal › Article › peer-review

84 Scopus citations

Abstract

We report visible light and X-ray imagers on lightweight and mechanically flexible plastic substrates. The process involves solution processing of organic photodetectors on top of an active-matrix backplane consisting of carbon nanotube thin-film transistors. The system takes advantage of the high mobility of nanotube transistors for low operating voltages and efficient light absorption of organic bulk-heterojunctions for high imaging sensitivity. With this highly scalable process scheme, 18 × 18 pixel-array flexible imagers (physical size of 2 cm × 1.5 cm) with high performance are successfully demonstrated. In addition, as the absorption peak of the adopted organic photodiodes covers the green band of the light spectrum, X-ray imaging is readily demonstrated by placing a scintillator film on top of the flexible imagers.

Original language	English
Pages (from-to)	5425-5430
Number of pages	6
Journal	Nano Letters
Volume	13
Issue number	11
DOIs	https://doi.org/10.1021/nl403001r
State	Published - Nov 13 2013

Keywords

bendable
electronic skin
imaging
organic photodiodes
single-walled carbon nanotubes
Thin film transistors

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10.1021/nl403001r

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title = "Carbon nanotube active-matrix backplanes for mechanically flexible visible light and X-ray imagers",

abstract = "We report visible light and X-ray imagers on lightweight and mechanically flexible plastic substrates. The process involves solution processing of organic photodetectors on top of an active-matrix backplane consisting of carbon nanotube thin-film transistors. The system takes advantage of the high mobility of nanotube transistors for low operating voltages and efficient light absorption of organic bulk-heterojunctions for high imaging sensitivity. With this highly scalable process scheme, 18 × 18 pixel-array flexible imagers (physical size of 2 cm × 1.5 cm) with high performance are successfully demonstrated. In addition, as the absorption peak of the adopted organic photodiodes covers the green band of the light spectrum, X-ray imaging is readily demonstrated by placing a scintillator film on top of the flexible imagers.",

keywords = "bendable, electronic skin, imaging, organic photodiodes, single-walled carbon nanotubes, Thin film transistors",

author = "Toshitake Takahashi and Zhibin Yu and Kevin Chen and Daisuke Kiriya and Chuan Wang and Kuniharu Takei and Hiroshi Shiraki and Teresa Chen and Biwu Ma and Ali Javey",

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doi = "10.1021/nl403001r",

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T1 - Carbon nanotube active-matrix backplanes for mechanically flexible visible light and X-ray imagers

AU - Takahashi, Toshitake

AU - Yu, Zhibin

AU - Chen, Kevin

AU - Kiriya, Daisuke

AU - Wang, Chuan

AU - Takei, Kuniharu

AU - Shiraki, Hiroshi

AU - Chen, Teresa

AU - Ma, Biwu

AU - Javey, Ali

PY - 2013/11/13

Y1 - 2013/11/13

N2 - We report visible light and X-ray imagers on lightweight and mechanically flexible plastic substrates. The process involves solution processing of organic photodetectors on top of an active-matrix backplane consisting of carbon nanotube thin-film transistors. The system takes advantage of the high mobility of nanotube transistors for low operating voltages and efficient light absorption of organic bulk-heterojunctions for high imaging sensitivity. With this highly scalable process scheme, 18 × 18 pixel-array flexible imagers (physical size of 2 cm × 1.5 cm) with high performance are successfully demonstrated. In addition, as the absorption peak of the adopted organic photodiodes covers the green band of the light spectrum, X-ray imaging is readily demonstrated by placing a scintillator film on top of the flexible imagers.

AB - We report visible light and X-ray imagers on lightweight and mechanically flexible plastic substrates. The process involves solution processing of organic photodetectors on top of an active-matrix backplane consisting of carbon nanotube thin-film transistors. The system takes advantage of the high mobility of nanotube transistors for low operating voltages and efficient light absorption of organic bulk-heterojunctions for high imaging sensitivity. With this highly scalable process scheme, 18 × 18 pixel-array flexible imagers (physical size of 2 cm × 1.5 cm) with high performance are successfully demonstrated. In addition, as the absorption peak of the adopted organic photodiodes covers the green band of the light spectrum, X-ray imaging is readily demonstrated by placing a scintillator film on top of the flexible imagers.

KW - bendable

KW - electronic skin

KW - imaging

KW - organic photodiodes

KW - single-walled carbon nanotubes

KW - Thin film transistors

UR - https://www.scopus.com/pages/publications/84887854851

U2 - 10.1021/nl403001r

DO - 10.1021/nl403001r

M3 - Article

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AN - SCOPUS:84887854851

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SP - 5425

EP - 5430

JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

Carbon nanotube active-matrix backplanes for mechanically flexible visible light and X-ray imagers

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Keywords

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