Reduced graphene oxide/single-walled carbon nanotube hybrid film using various p-type dopants and its application to gan-based light-emitting diodes

Byeong Ryong Lee; Tae Geun Kim

doi:10.1166/jnn.2016.12834

Reduced graphene oxide/single-walled carbon nanotube hybrid film using various p-type dopants and its application to gan-based light-emitting diodes

Byeong Ryong Lee, Tae Geun Kim

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

Abstract

This paper reports the electrical and optical properties of the reduced graphene oxide (RGO)/singlewalled carbon nanotube (SWNT) films using various p-type dopants and its application to GaNbased light-emitting diodes. To enhance the current injection and spreading of the RGO/SWNT films on the light-emitting diodes (LEDs), we increased the work function (ℙ) of the films using chemical doping with AuCl₃ , poly(3,4-ethylenedioxythiophene) oxidized with poly(4-styrenesulfonate) (PEDOT:PSS) and MoO₃ ; thereby reduced the Schottky barrier height between the RGO/SWNT films and p-GaN. By comparison, LEDs fabricated with work-function-tuned RGO/SWNT film doped with MoO₃ exhibited the decrease of the forward voltage from 5.3V to 5.02 V at 20 mA and the increase of the output power up to 1.26 times. We also analyzed the current injection mechanism using ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy.

Original language	English
Pages (from-to)	6203-6208
Number of pages	6
Journal	Journal of Nanoscience and Nanotechnology
Volume	16
Issue number	6
DOIs	https://doi.org/10.1166/jnn.2016.12834
Publication status	Published - 2016 Jun

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea grant funded by the Korean Government (MEST) under grant number 2011-0028769, Korea.

Publisher Copyright:
© 2016 American Scientific Publishers.

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

Keywords

AuCl
Dip-Coating methods.
MoO
P-GaN
PEDOT:PSS
RGO/SWNTs

ASJC Scopus subject areas

Bioengineering
General Chemistry
Biomedical Engineering
General Materials Science
Condensed Matter Physics

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10.1166/jnn.2016.12834

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title = "Reduced graphene oxide/single-walled carbon nanotube hybrid film using various p-type dopants and its application to gan-based light-emitting diodes",

abstract = "This paper reports the electrical and optical properties of the reduced graphene oxide (RGO)/singlewalled carbon nanotube (SWNT) films using various p-type dopants and its application to GaNbased light-emitting diodes. To enhance the current injection and spreading of the RGO/SWNT films on the light-emitting diodes (LEDs), we increased the work function (ℙ) of the films using chemical doping with AuCl3 , poly(3,4-ethylenedioxythiophene) oxidized with poly(4-styrenesulfonate) (PEDOT:PSS) and MoO3 ; thereby reduced the Schottky barrier height between the RGO/SWNT films and p-GaN. By comparison, LEDs fabricated with work-function-tuned RGO/SWNT film doped with MoO3 exhibited the decrease of the forward voltage from 5.3V to 5.02 V at 20 mA and the increase of the output power up to 1.26 times. We also analyzed the current injection mechanism using ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy.",

keywords = "AuCl, Dip-Coating methods., MoO, P-GaN, PEDOT:PSS, RGO/SWNTs",

author = "Lee, {Byeong Ryong} and Kim, {Tae Geun}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea grant funded by the Korean Government (MEST) under grant number 2011-0028769, Korea. Publisher Copyright: {\textcopyright} 2016 American Scientific Publishers. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

year = "2016",

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AU - Kim, Tae Geun

N1 - Funding Information: This work was supported by a National Research Foundation of Korea grant funded by the Korean Government (MEST) under grant number 2011-0028769, Korea. Publisher Copyright: © 2016 American Scientific Publishers. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2016/6

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N2 - This paper reports the electrical and optical properties of the reduced graphene oxide (RGO)/singlewalled carbon nanotube (SWNT) films using various p-type dopants and its application to GaNbased light-emitting diodes. To enhance the current injection and spreading of the RGO/SWNT films on the light-emitting diodes (LEDs), we increased the work function (ℙ) of the films using chemical doping with AuCl3 , poly(3,4-ethylenedioxythiophene) oxidized with poly(4-styrenesulfonate) (PEDOT:PSS) and MoO3 ; thereby reduced the Schottky barrier height between the RGO/SWNT films and p-GaN. By comparison, LEDs fabricated with work-function-tuned RGO/SWNT film doped with MoO3 exhibited the decrease of the forward voltage from 5.3V to 5.02 V at 20 mA and the increase of the output power up to 1.26 times. We also analyzed the current injection mechanism using ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy.

AB - This paper reports the electrical and optical properties of the reduced graphene oxide (RGO)/singlewalled carbon nanotube (SWNT) films using various p-type dopants and its application to GaNbased light-emitting diodes. To enhance the current injection and spreading of the RGO/SWNT films on the light-emitting diodes (LEDs), we increased the work function (ℙ) of the films using chemical doping with AuCl3 , poly(3,4-ethylenedioxythiophene) oxidized with poly(4-styrenesulfonate) (PEDOT:PSS) and MoO3 ; thereby reduced the Schottky barrier height between the RGO/SWNT films and p-GaN. By comparison, LEDs fabricated with work-function-tuned RGO/SWNT film doped with MoO3 exhibited the decrease of the forward voltage from 5.3V to 5.02 V at 20 mA and the increase of the output power up to 1.26 times. We also analyzed the current injection mechanism using ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy.

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Reduced graphene oxide/single-walled carbon nanotube hybrid film using various p-type dopants and its application to gan-based light-emitting diodes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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