Back-gate tuning of Schottky barrier height in graphene/zinc-oxide photodiodes

Sejoon Lee; Youngmin Lee; Deuk Young Kim; Emil B. Song; Sung Min Kim

doi:10.1063/1.4812198

Back-gate tuning of Schottky barrier height in graphene/zinc-oxide photodiodes

Sejoon Lee
, Youngmin Lee
, Deuk Young Kim
, Emil B. Song
, Sung Min Kim

Division of System Semiconductor

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

41 Scopus citations

Abstract

We demonstrate back-gate-tuning of the Schottky barrier height in graphene/zinc oxide photodiodes that are devised by a selective sputter-growth of ZnO on pre-patterned single-layer graphene sheets. The devices show a clear rectifying behavior (e.g., Schottky barrier height ∼0.65 eV and ideality factor ∼1.15) and an improvement in the photo-response via application of a back-gate voltage. The back-gate bias tunes the effective Schottky barrier-height and also promotes the activation of photo-excited carriers, which leads to an enhancement in the thermionic emission process.

Original language	English
Article number	242114
Journal	Applied Physics Letters
Volume	102
Issue number	24
DOIs	https://doi.org/10.1063/1.4812198
State	Published - 17 Jun 2013

Access to Document

10.1063/1.4812198

Cite this

@article{b537c82590884f54bd7923442220b9b7,

title = "Back-gate tuning of Schottky barrier height in graphene/zinc-oxide photodiodes",

abstract = "We demonstrate back-gate-tuning of the Schottky barrier height in graphene/zinc oxide photodiodes that are devised by a selective sputter-growth of ZnO on pre-patterned single-layer graphene sheets. The devices show a clear rectifying behavior (e.g., Schottky barrier height ∼0.65 eV and ideality factor ∼1.15) and an improvement in the photo-response via application of a back-gate voltage. The back-gate bias tunes the effective Schottky barrier-height and also promotes the activation of photo-excited carriers, which leads to an enhancement in the thermionic emission process.",

author = "Sejoon Lee and Youngmin Lee and \{Young Kim\}, Deuk and Song, \{Emil B.\} and \{Min Kim\}, Sung",

year = "2013",

month = jun,

day = "17",

doi = "10.1063/1.4812198",

language = "English",

volume = "102",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "24",

}

TY - JOUR

T1 - Back-gate tuning of Schottky barrier height in graphene/zinc-oxide photodiodes

AU - Lee, Sejoon

AU - Lee, Youngmin

AU - Young Kim, Deuk

AU - Song, Emil B.

AU - Min Kim, Sung

PY - 2013/6/17

Y1 - 2013/6/17

N2 - We demonstrate back-gate-tuning of the Schottky barrier height in graphene/zinc oxide photodiodes that are devised by a selective sputter-growth of ZnO on pre-patterned single-layer graphene sheets. The devices show a clear rectifying behavior (e.g., Schottky barrier height ∼0.65 eV and ideality factor ∼1.15) and an improvement in the photo-response via application of a back-gate voltage. The back-gate bias tunes the effective Schottky barrier-height and also promotes the activation of photo-excited carriers, which leads to an enhancement in the thermionic emission process.

AB - We demonstrate back-gate-tuning of the Schottky barrier height in graphene/zinc oxide photodiodes that are devised by a selective sputter-growth of ZnO on pre-patterned single-layer graphene sheets. The devices show a clear rectifying behavior (e.g., Schottky barrier height ∼0.65 eV and ideality factor ∼1.15) and an improvement in the photo-response via application of a back-gate voltage. The back-gate bias tunes the effective Schottky barrier-height and also promotes the activation of photo-excited carriers, which leads to an enhancement in the thermionic emission process.

UR - https://www.scopus.com/pages/publications/84879816259

U2 - 10.1063/1.4812198

DO - 10.1063/1.4812198

M3 - Article

AN - SCOPUS:84879816259

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 242114

ER -

Back-gate tuning of Schottky barrier height in graphene/zinc-oxide photodiodes

Abstract

Access to Document

Other files and links

Fingerprint

Cite this