Optical-power-dependent photodesorption kinetics of graphene studied by conductance response

Yang Yang Hsu; Chi Yuan Lin; Yi Chun Lai; Kun Rui Wu; Kwai Kong Ng; Chen Shiung Chang; Gou Chung Chi; Peichen Yu; Forest Shih Sen Chien

doi:10.1364/OE.23.014344

Optical-power-dependent photodesorption kinetics of graphene studied by conductance response

Yang Yang Hsu, Chi Yuan Lin, Yi Chun Lai, Kun Rui Wu, Kwai Kong Ng, Chen Shiung Chang, Gou Chung Chi, Peichen Yu, Forest Shih Sen Chien

光電工程學系

研究成果: Article › 同行評審

5 引文斯高帕斯（Scopus）

摘要

The photodesorption kinetics of graphene with various UV laser power is studied by conductance response. Analytical expressions of the power-dependent photodesorption kinetics of graphene in ambience are derived. The photodesorption time constant τ_d, steady current, and magnitude of modulation current, can be expressed as functions of the adsorption time constant τ_a, desorption cross section σ, and photon flux density. Under illumination the steady occupation ratio of adsorbed O₂ on graphene is equal to τ_d/τ_a. It is suggested that the photodesorption of O₂ on graphene is attributed the injection of photogenerated hot electrons and is restricted by the density of antibonding states of O₂.

原文	English
頁（從 - 到）	14344-14350
頁數	7
期刊	Optics Express
卷	23
發行號	11
DOIs	https://doi.org/10.1364/OE.23.014344
出版狀態	Published - 2015

存取文件

10.1364/OE.23.014344

其它文件與鏈接

Link to publication in Scopus

引用此

@article{d2e2a5213d5d4a4daa2b07252034b97f,

title = "Optical-power-dependent photodesorption kinetics of graphene studied by conductance response",

abstract = "The photodesorption kinetics of graphene with various UV laser power is studied by conductance response. Analytical expressions of the power-dependent photodesorption kinetics of graphene in ambience are derived. The photodesorption time constant τd, steady current, and magnitude of modulation current, can be expressed as functions of the adsorption time constant τa, desorption cross section σ, and photon flux density. Under illumination the steady occupation ratio of adsorbed O2 on graphene is equal to τd/τa. It is suggested that the photodesorption of O2 on graphene is attributed the injection of photogenerated hot electrons and is restricted by the density of antibonding states of O2.",

author = "Hsu, {Yang Yang} and Lin, {Chi Yuan} and Lai, {Yi Chun} and Wu, {Kun Rui} and Ng, {Kwai Kong} and Chang, {Chen Shiung} and Chi, {Gou Chung} and Peichen Yu and Chien, {Forest Shih Sen}",

note = "Publisher Copyright: {\textcopyright} 2015 Optical Society of America.",

year = "2015",

doi = "10.1364/OE.23.014344",

language = "English",

volume = "23",

pages = "14344--14350",

journal = "Optics Express",

issn = "1094-4087",

publisher = "Optica Publishing Group",

number = "11",

}

TY - JOUR

T1 - Optical-power-dependent photodesorption kinetics of graphene studied by conductance response

AU - Hsu, Yang Yang

AU - Lin, Chi Yuan

AU - Lai, Yi Chun

AU - Wu, Kun Rui

AU - Ng, Kwai Kong

AU - Chang, Chen Shiung

AU - Chi, Gou Chung

AU - Yu, Peichen

AU - Chien, Forest Shih Sen

PY - 2015

Y1 - 2015

N2 - The photodesorption kinetics of graphene with various UV laser power is studied by conductance response. Analytical expressions of the power-dependent photodesorption kinetics of graphene in ambience are derived. The photodesorption time constant τd, steady current, and magnitude of modulation current, can be expressed as functions of the adsorption time constant τa, desorption cross section σ, and photon flux density. Under illumination the steady occupation ratio of adsorbed O2 on graphene is equal to τd/τa. It is suggested that the photodesorption of O2 on graphene is attributed the injection of photogenerated hot electrons and is restricted by the density of antibonding states of O2.

AB - The photodesorption kinetics of graphene with various UV laser power is studied by conductance response. Analytical expressions of the power-dependent photodesorption kinetics of graphene in ambience are derived. The photodesorption time constant τd, steady current, and magnitude of modulation current, can be expressed as functions of the adsorption time constant τa, desorption cross section σ, and photon flux density. Under illumination the steady occupation ratio of adsorbed O2 on graphene is equal to τd/τa. It is suggested that the photodesorption of O2 on graphene is attributed the injection of photogenerated hot electrons and is restricted by the density of antibonding states of O2.

UR - http://www.scopus.com/inward/record.url?scp=84981333774&partnerID=8YFLogxK

U2 - 10.1364/OE.23.014344

DO - 10.1364/OE.23.014344

M3 - Article

AN - SCOPUS:84981333774

SN - 1094-4087

VL - 23

SP - 14344

EP - 14350

JO - Optics Express

JF - Optics Express

IS - 11

ER -

Optical-power-dependent photodesorption kinetics of graphene studied by conductance response

摘要

存取文件

其它文件與鏈接

指紋

引用此