Towards high efficiency solution processable inverted bulk heterojunction polymer solar cells using modified indium tin oxide cathode

Xiaohong Chen; Jiaxiang Yang; Lim Yi Xuan Candy Haley; Jiong Lu; Furong Zhu; Kian Ping Loh

doi:10.1016/j.orgel.2010.09.011

Towards high efficiency solution processable inverted bulk heterojunction polymer solar cells using modified indium tin oxide cathode

Xiaohong Chen, Jiaxiang Yang, Lim Yi Xuan Candy Haley, Jiong Lu, Furong Zhu, Kian Ping Loh

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

16 Citations (Scopus)

Abstract

High efficiency inverted regioregular poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C₆₁-butyric acid methyl ester (PCBM)-based polymer solar cells (PSCs) using an indium tin oxide (ITO) cathode, modified with a solution-processed ionic liquid-functionalized carbon nanoparticles (ILCNs) layer, was demonstrated. ILCNs-modified ITO cathode has a very good thermal stability and a superior surface electronic property suited for application in polymer solar cells. A power conversion efficiency (PCE) of 3.2% was obtained for inverted PSCs measured under AM1.5G illumination of 100 mW/cm², which is comparable to PCE of a reference P3HT:PCBM-based solar cell having a conventional structure. There was almost no deterioration in the performance of inverted PSCs that were aged over a post-annealing temperature range from 100 to 200 °C. The work function of ILCNs-modified ITO cathode annealed at different temperatures was also measured using ultraviolet photoelectron spectroscopy. It was found that the work function of 4.4 eV, measured for a bare ITO electrode, decreased to 3.8 eV when it was modified with ILCNs, and was not dependent on the post-annealing temperature.

Original language	English
Pages (from-to)	1942-1946
Number of pages	5
Journal	Organic Electronics
Volume	11
Issue number	12
DOIs	https://doi.org/10.1016/j.orgel.2010.09.011
Publication status	Published - Dec 2010

Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

User-Defined Keywords

Carbon nanoparticles
Inverted bulk heterojunction polymer solar cells
ITO cathode

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10.1016/j.orgel.2010.09.011

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title = "Towards high efficiency solution processable inverted bulk heterojunction polymer solar cells using modified indium tin oxide cathode",

abstract = "High efficiency inverted regioregular poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM)-based polymer solar cells (PSCs) using an indium tin oxide (ITO) cathode, modified with a solution-processed ionic liquid-functionalized carbon nanoparticles (ILCNs) layer, was demonstrated. ILCNs-modified ITO cathode has a very good thermal stability and a superior surface electronic property suited for application in polymer solar cells. A power conversion efficiency (PCE) of 3.2% was obtained for inverted PSCs measured under AM1.5G illumination of 100 mW/cm2, which is comparable to PCE of a reference P3HT:PCBM-based solar cell having a conventional structure. There was almost no deterioration in the performance of inverted PSCs that were aged over a post-annealing temperature range from 100 to 200 °C. The work function of ILCNs-modified ITO cathode annealed at different temperatures was also measured using ultraviolet photoelectron spectroscopy. It was found that the work function of 4.4 eV, measured for a bare ITO electrode, decreased to 3.8 eV when it was modified with ILCNs, and was not dependent on the post-annealing temperature.",

keywords = "Carbon nanoparticles, Inverted bulk heterojunction polymer solar cells, ITO cathode",

author = "Xiaohong Chen and Jiaxiang Yang and Haley, {Lim Yi Xuan Candy} and Jiong Lu and Furong Zhu and Loh, {Kian Ping}",

note = "Funding Information: The authors acknowledge financial support from the NRF-CRP grant “Graphene and Related Materials and Devices R-143-000-360-281”.",

year = "2010",

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T1 - Towards high efficiency solution processable inverted bulk heterojunction polymer solar cells using modified indium tin oxide cathode

AU - Chen, Xiaohong

AU - Yang, Jiaxiang

AU - Haley, Lim Yi Xuan Candy

AU - Lu, Jiong

AU - Zhu, Furong

AU - Loh, Kian Ping

N1 - Funding Information: The authors acknowledge financial support from the NRF-CRP grant “Graphene and Related Materials and Devices R-143-000-360-281”.

PY - 2010/12

Y1 - 2010/12

N2 - High efficiency inverted regioregular poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM)-based polymer solar cells (PSCs) using an indium tin oxide (ITO) cathode, modified with a solution-processed ionic liquid-functionalized carbon nanoparticles (ILCNs) layer, was demonstrated. ILCNs-modified ITO cathode has a very good thermal stability and a superior surface electronic property suited for application in polymer solar cells. A power conversion efficiency (PCE) of 3.2% was obtained for inverted PSCs measured under AM1.5G illumination of 100 mW/cm2, which is comparable to PCE of a reference P3HT:PCBM-based solar cell having a conventional structure. There was almost no deterioration in the performance of inverted PSCs that were aged over a post-annealing temperature range from 100 to 200 °C. The work function of ILCNs-modified ITO cathode annealed at different temperatures was also measured using ultraviolet photoelectron spectroscopy. It was found that the work function of 4.4 eV, measured for a bare ITO electrode, decreased to 3.8 eV when it was modified with ILCNs, and was not dependent on the post-annealing temperature.

AB - High efficiency inverted regioregular poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM)-based polymer solar cells (PSCs) using an indium tin oxide (ITO) cathode, modified with a solution-processed ionic liquid-functionalized carbon nanoparticles (ILCNs) layer, was demonstrated. ILCNs-modified ITO cathode has a very good thermal stability and a superior surface electronic property suited for application in polymer solar cells. A power conversion efficiency (PCE) of 3.2% was obtained for inverted PSCs measured under AM1.5G illumination of 100 mW/cm2, which is comparable to PCE of a reference P3HT:PCBM-based solar cell having a conventional structure. There was almost no deterioration in the performance of inverted PSCs that were aged over a post-annealing temperature range from 100 to 200 °C. The work function of ILCNs-modified ITO cathode annealed at different temperatures was also measured using ultraviolet photoelectron spectroscopy. It was found that the work function of 4.4 eV, measured for a bare ITO electrode, decreased to 3.8 eV when it was modified with ILCNs, and was not dependent on the post-annealing temperature.

KW - Carbon nanoparticles

KW - Inverted bulk heterojunction polymer solar cells

KW - ITO cathode

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Towards high efficiency solution processable inverted bulk heterojunction polymer solar cells using modified indium tin oxide cathode

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