Buffer and anode-integrated WO3-doped In2O 3 electrodes for PEDOT:PSS-free organic photovoltaics

Jun Ho Kim; Sin Bi Kang; Ju Hyun Lee; Yong Hee Shin; Hyun Su Shin; Dae Gyeon Kwon; Tae Yeon Seong; Yongsup Park; Seok In Na; Han Ki Kim

doi:10.1016/j.orgel.2013.02.025

Buffer and anode-integrated WO₃-doped In₂O ₃ electrodes for PEDOT:PSS-free organic photovoltaics

Jun Ho Kim
, Sin Bi Kang
, Ju Hyun Lee
, Yong Hee Shin
, Hyun Su Shin
, Dae Gyeon Kwon
, Tae Yeon Seong
, Yongsup Park
, Seok In Na
, Han Ki Kim

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

23 Citations (Scopus)

Abstract

We developed PEDOT:PSS-free organic solar cells (OSCs) using WO₃ and In₂O₃ (IWO) mixed electrodes acting as a buffer hole injection layer (HIL) and anode simultaneously. Through the co-sputtering and rapid thermal annealing (RTA) of WO₃ and In₂O₃, we achieved buffer and anode-integrated transparent electrodes with a sheet resistance of 17 Ohm/square, a transmittance of 90.32%, and a work function of 4.83 eV, all of which are comparable to values obtained with a conventional ITO anode. Due to the existence of WO₃ in the In₂O₃ matrix, OSCs fabricated on an IWO electrode with no acidic PEDOT:PSS buffer layer showed a PCE of 2.87%. Therefore, a transparent IWO electrode simultaneously acting as an HIL and anode layer can be considered a promising transparent electrode for cost-efficient and reliable OSCs because it could eliminate the use of acidic PEDOT:PSS buffer layer.

Original language	English
Pages (from-to)	1305-1312
Number of pages	8
Journal	Organic Electronics
Volume	14
Issue number	5
DOIs	https://doi.org/10.1016/j.orgel.2013.02.025
Publication status	Published - May 2013

Bibliographical note

Funding Information:
This work was financially supported by the New & Renewable Energy of Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant ( 2011T100200034 ) and Fundamental R&D Program for Core Technology of Materials Grant ( 10031768 ) funded by the Ministry of Knowledge Economy (MKE), Republic of Korea.

Keywords

Organic solar cells
PEDOT:PSS free
Transparent electrodes

Access to Document

10.1016/j.orgel.2013.02.025

Cite this

@article{b97855c160f244aba85c86bc3c148fda,

title = "Buffer and anode-integrated WO3-doped In2O 3 electrodes for PEDOT:PSS-free organic photovoltaics",

abstract = "We developed PEDOT:PSS-free organic solar cells (OSCs) using WO3 and In2O3 (IWO) mixed electrodes acting as a buffer hole injection layer (HIL) and anode simultaneously. Through the co-sputtering and rapid thermal annealing (RTA) of WO3 and In2O3, we achieved buffer and anode-integrated transparent electrodes with a sheet resistance of 17 Ohm/square, a transmittance of 90.32\%, and a work function of 4.83 eV, all of which are comparable to values obtained with a conventional ITO anode. Due to the existence of WO3 in the In2O3 matrix, OSCs fabricated on an IWO electrode with no acidic PEDOT:PSS buffer layer showed a PCE of 2.87\%. Therefore, a transparent IWO electrode simultaneously acting as an HIL and anode layer can be considered a promising transparent electrode for cost-efficient and reliable OSCs because it could eliminate the use of acidic PEDOT:PSS buffer layer.",

keywords = "Organic solar cells, PEDOT:PSS free, Transparent electrodes",

author = "Kim, \{Jun Ho\} and Kang, \{Sin Bi\} and Lee, \{Ju Hyun\} and Shin, \{Yong Hee\} and Shin, \{Hyun Su\} and Kwon, \{Dae Gyeon\} and Seong, \{Tae Yeon\} and Yongsup Park and Na, \{Seok In\} and Kim, \{Han Ki\}",

note = "Funding Information: This work was financially supported by the New \& Renewable Energy of Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant ( 2011T100200034 ) and Fundamental R\&D Program for Core Technology of Materials Grant ( 10031768 ) funded by the Ministry of Knowledge Economy (MKE), Republic of Korea.",

year = "2013",

month = may,

doi = "10.1016/j.orgel.2013.02.025",

language = "English",

volume = "14",

pages = "1305--1312",

journal = "Organic Electronics",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Buffer and anode-integrated WO3-doped In2O 3 electrodes for PEDOT:PSS-free organic photovoltaics

AU - Kim, Jun Ho

AU - Kang, Sin Bi

AU - Lee, Ju Hyun

AU - Shin, Yong Hee

AU - Shin, Hyun Su

AU - Kwon, Dae Gyeon

AU - Seong, Tae Yeon

AU - Park, Yongsup

AU - Na, Seok In

AU - Kim, Han Ki

N1 - Funding Information: This work was financially supported by the New & Renewable Energy of Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant ( 2011T100200034 ) and Fundamental R&D Program for Core Technology of Materials Grant ( 10031768 ) funded by the Ministry of Knowledge Economy (MKE), Republic of Korea.

PY - 2013/5

Y1 - 2013/5

N2 - We developed PEDOT:PSS-free organic solar cells (OSCs) using WO3 and In2O3 (IWO) mixed electrodes acting as a buffer hole injection layer (HIL) and anode simultaneously. Through the co-sputtering and rapid thermal annealing (RTA) of WO3 and In2O3, we achieved buffer and anode-integrated transparent electrodes with a sheet resistance of 17 Ohm/square, a transmittance of 90.32%, and a work function of 4.83 eV, all of which are comparable to values obtained with a conventional ITO anode. Due to the existence of WO3 in the In2O3 matrix, OSCs fabricated on an IWO electrode with no acidic PEDOT:PSS buffer layer showed a PCE of 2.87%. Therefore, a transparent IWO electrode simultaneously acting as an HIL and anode layer can be considered a promising transparent electrode for cost-efficient and reliable OSCs because it could eliminate the use of acidic PEDOT:PSS buffer layer.

AB - We developed PEDOT:PSS-free organic solar cells (OSCs) using WO3 and In2O3 (IWO) mixed electrodes acting as a buffer hole injection layer (HIL) and anode simultaneously. Through the co-sputtering and rapid thermal annealing (RTA) of WO3 and In2O3, we achieved buffer and anode-integrated transparent electrodes with a sheet resistance of 17 Ohm/square, a transmittance of 90.32%, and a work function of 4.83 eV, all of which are comparable to values obtained with a conventional ITO anode. Due to the existence of WO3 in the In2O3 matrix, OSCs fabricated on an IWO electrode with no acidic PEDOT:PSS buffer layer showed a PCE of 2.87%. Therefore, a transparent IWO electrode simultaneously acting as an HIL and anode layer can be considered a promising transparent electrode for cost-efficient and reliable OSCs because it could eliminate the use of acidic PEDOT:PSS buffer layer.

KW - Organic solar cells

KW - PEDOT:PSS free

KW - Transparent electrodes

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