Work function engineering of graphene electrode via chemical doping

Yumeng Shi; Ki Kang Kim; Alfonso Reina; Mario Hofmann; Lain Jong Li; Jing Kong

doi:10.1021/nn1005478

Work function engineering of graphene electrode via chemical doping

Yumeng Shi
, Ki Kang Kim
, Alfonso Reina
, Mario Hofmann
, Lain Jong Li
, Jing Kong

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

532 Scopus citations

Abstract

In this work, we demonstrate that graphene films synthesized by chemical vapor deposition (CVD) method can be used as thin transparent electrodes with tunable work function. By immersing the CVD-grown graphene films into AuCl ₃ solution, Au particles were formed on the surface of graphene films by spontaneous reduction of metal ions. The surface potential of graphene films can be adjusted (by up to ∼ 0.5 eV) by controlling the immersion time. Photovoltaic devices based on n-type silicon interfacing with graphene films were fabricated to demonstrate the benefit of an electrode with tunable work function. The maximum power conversion efficiency (PCE) achieved was ∼ 0.08%, which is more than 40 times larger than the devices without chemical doping.

Original language	English
Pages (from-to)	2689-2694
Number of pages	6
Journal	ACS Nano
Volume	4
Issue number	5
DOIs	https://doi.org/10.1021/nn1005478
State	Published - 25 May 2010
Externally published	Yes

Keywords

Doping
Graphene
Photovoltaic devices
Surface analysis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/nn1005478

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title = "Work function engineering of graphene electrode via chemical doping",

abstract = "In this work, we demonstrate that graphene films synthesized by chemical vapor deposition (CVD) method can be used as thin transparent electrodes with tunable work function. By immersing the CVD-grown graphene films into AuCl 3 solution, Au particles were formed on the surface of graphene films by spontaneous reduction of metal ions. The surface potential of graphene films can be adjusted (by up to ∼ 0.5 eV) by controlling the immersion time. Photovoltaic devices based on n-type silicon interfacing with graphene films were fabricated to demonstrate the benefit of an electrode with tunable work function. The maximum power conversion efficiency (PCE) achieved was ∼ 0.08\%, which is more than 40 times larger than the devices without chemical doping.",

keywords = "Doping, Graphene, Photovoltaic devices, Surface analysis",

author = "Yumeng Shi and Kim, \{Ki Kang\} and Alfonso Reina and Mario Hofmann and Li, \{Lain Jong\} and Jing Kong",

year = "2010",

month = may,

day = "25",

doi = "10.1021/nn1005478",

language = "English",

volume = "4",

pages = "2689--2694",

journal = "ACS Nano",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Work function engineering of graphene electrode via chemical doping

AU - Shi, Yumeng

AU - Kim, Ki Kang

AU - Reina, Alfonso

AU - Hofmann, Mario

AU - Li, Lain Jong

AU - Kong, Jing

PY - 2010/5/25

Y1 - 2010/5/25

N2 - In this work, we demonstrate that graphene films synthesized by chemical vapor deposition (CVD) method can be used as thin transparent electrodes with tunable work function. By immersing the CVD-grown graphene films into AuCl 3 solution, Au particles were formed on the surface of graphene films by spontaneous reduction of metal ions. The surface potential of graphene films can be adjusted (by up to ∼ 0.5 eV) by controlling the immersion time. Photovoltaic devices based on n-type silicon interfacing with graphene films were fabricated to demonstrate the benefit of an electrode with tunable work function. The maximum power conversion efficiency (PCE) achieved was ∼ 0.08%, which is more than 40 times larger than the devices without chemical doping.

AB - In this work, we demonstrate that graphene films synthesized by chemical vapor deposition (CVD) method can be used as thin transparent electrodes with tunable work function. By immersing the CVD-grown graphene films into AuCl 3 solution, Au particles were formed on the surface of graphene films by spontaneous reduction of metal ions. The surface potential of graphene films can be adjusted (by up to ∼ 0.5 eV) by controlling the immersion time. Photovoltaic devices based on n-type silicon interfacing with graphene films were fabricated to demonstrate the benefit of an electrode with tunable work function. The maximum power conversion efficiency (PCE) achieved was ∼ 0.08%, which is more than 40 times larger than the devices without chemical doping.

KW - Doping

KW - Graphene

KW - Photovoltaic devices

KW - Surface analysis

UR - https://www.scopus.com/pages/publications/77952907880

U2 - 10.1021/nn1005478

DO - 10.1021/nn1005478

M3 - Article

AN - SCOPUS:77952907880

SN - 1936-0851

VL - 4

SP - 2689

EP - 2694

JO - ACS Nano

JF - ACS Nano

IS - 5

ER -

Work function engineering of graphene electrode via chemical doping

Abstract

Keywords

UN SDGs

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