Precisely Controlled Ultrastrong Photoinduced Doping at Graphene-Heterostructures Assisted by Trap-State-Mediated Charge Transfer

Po Hsun Ho; Chun Hsiang Chen; Fu Yu Shih; Yih Ren Chang; Shao Sian Li; Wei Hua Wang; Min Chuan Shih; Wei Ting Chen; Ya Ping Chiu; Min Ken Li; Yi Siang Shih; Chun Wei Chen

doi:10.1002/adma.201503592

Precisely Controlled Ultrastrong Photoinduced Doping at Graphene-Heterostructures Assisted by Trap-State-Mediated Charge Transfer

Po Hsun Ho, Chun Hsiang Chen, Fu Yu Shih, Yih Ren Chang, Shao Sian Li, Wei Hua Wang, Min Chuan Shih, Wei Ting Chen, Ya Ping Chiu^*, Min Ken Li, Yi Siang Shih, Chun Wei Chen

^*Corresponding author for this work

Department of Physics

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

40 Citations (Scopus)

Abstract

Ultrastrong and precisely controllable n-type photoinduced doping at a graphene/TiO_x heterostructure as a result of trap-state-mediated charge transfer is demonstrated, which is much higher than any other reported photodoping techniques. Based on the strong light-matter interactions at the graphene/TiO_x heterostructure, precisely controlled photoinduced bandgap opening of a bilayer graphene device is demonstrated.

Original language	English
Pages (from-to)	7809-7815
Number of pages	7
Journal	Advanced Materials
Volume	27
Issue number	47
DOIs	https://doi.org/10.1002/adma.201503592
Publication status	Published - 2015 Dec 16

Keywords

band gap opening
charge transfer
graphene heterostructures
ultrastrong photoinduced doping

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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title = "Precisely Controlled Ultrastrong Photoinduced Doping at Graphene-Heterostructures Assisted by Trap-State-Mediated Charge Transfer",

abstract = "Ultrastrong and precisely controllable n-type photoinduced doping at a graphene/TiOx heterostructure as a result of trap-state-mediated charge transfer is demonstrated, which is much higher than any other reported photodoping techniques. Based on the strong light-matter interactions at the graphene/TiOx heterostructure, precisely controlled photoinduced bandgap opening of a bilayer graphene device is demonstrated.",

keywords = "band gap opening, charge transfer, graphene heterostructures, ultrastrong photoinduced doping",

author = "Ho, {Po Hsun} and Chen, {Chun Hsiang} and Shih, {Fu Yu} and Chang, {Yih Ren} and Li, {Shao Sian} and Wang, {Wei Hua} and Shih, {Min Chuan} and Chen, {Wei Ting} and Chiu, {Ya Ping} and Li, {Min Ken} and Shih, {Yi Siang} and Chen, {Chun Wei}",

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doi = "10.1002/adma.201503592",

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T1 - Precisely Controlled Ultrastrong Photoinduced Doping at Graphene-Heterostructures Assisted by Trap-State-Mediated Charge Transfer

AU - Ho, Po Hsun

AU - Chen, Chun Hsiang

AU - Shih, Fu Yu

AU - Chang, Yih Ren

AU - Li, Shao Sian

AU - Wang, Wei Hua

AU - Shih, Min Chuan

AU - Chen, Wei Ting

AU - Chiu, Ya Ping

AU - Li, Min Ken

AU - Shih, Yi Siang

AU - Chen, Chun Wei

PY - 2015/12/16

Y1 - 2015/12/16

N2 - Ultrastrong and precisely controllable n-type photoinduced doping at a graphene/TiOx heterostructure as a result of trap-state-mediated charge transfer is demonstrated, which is much higher than any other reported photodoping techniques. Based on the strong light-matter interactions at the graphene/TiOx heterostructure, precisely controlled photoinduced bandgap opening of a bilayer graphene device is demonstrated.

AB - Ultrastrong and precisely controllable n-type photoinduced doping at a graphene/TiOx heterostructure as a result of trap-state-mediated charge transfer is demonstrated, which is much higher than any other reported photodoping techniques. Based on the strong light-matter interactions at the graphene/TiOx heterostructure, precisely controlled photoinduced bandgap opening of a bilayer graphene device is demonstrated.

KW - band gap opening

KW - charge transfer

KW - graphene heterostructures

KW - ultrastrong photoinduced doping

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Precisely Controlled Ultrastrong Photoinduced Doping at Graphene-Heterostructures Assisted by Trap-State-Mediated Charge Transfer

Abstract

Keywords

ASJC Scopus subject areas

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