Highly efficient and stable organic solar cells via interface engineering with a nanostructured ITR-GO/PFN bilayer cathode interlayer

Ding Zheng; Lili Zhao; Pu Fan; Ran Ji; Junsheng Yu

doi:10.3390/nano7090233

Highly efficient and stable organic solar cells via interface engineering with a nanostructured ITR-GO/PFN bilayer cathode interlayer

Ding Zheng, Lili Zhao, Pu Fan, Ran Ji, Junsheng Yu^*

^*Corresponding author for this work

Chemistry

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

6 Scopus citations

Abstract

An innovative bilayer cathode interlayer (CIL) with a nanostructure consisting of in situ thermal reduced graphene oxide (ITR-GO) and poly[(9,9-bis(3^′ -(N,N-dimethylamion)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl) fluorene] (PFN) has been fabricated for inverted organic solar cells (OSCs). An approach to prepare a CIL of high electronic quality by using ITR-GO as a template to modulate the morphology of the interface between the active layer and electrode and to further reduce the work function of the electrode has also been realized. This bilayer ITR-GO/PFN CIL is processed by a spray-coating method with facile in situ thermal reduction. Meanwhile, the CIL shows a good charge transport efficiency and less charge recombination, which leads to a significant enhancement of the power conversion efficiency from 6.47% to 8.34% for Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b^′ ]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl) carbonyl]thieno[3,4-b]thiophenediyl} (PTB7):[6,6]-phenyl-C₇₁ -butyric acid methyl ester (PC₇₁ BM)-based OSCs. In addition, the long-term stability of the OSC is improved by using the ITR-GO/PFN CIL when compared with the pristine device. These results indicate that the bilayer ITR-GO/PFN CIL is a promising way to realize high-efficiency and stable OSCs by using water-soluble conjugated polymer electrolytes such as PFN.

Original language	English (US)
Article number	233
Journal	Nanomaterials
Volume	7
Issue number	9
DOIs	https://doi.org/10.3390/nano7090233
State	Published - Sep 2017

Funding

AAcckknnoowwlleeddggmmeennttss:: TThhiiss rreesseeaarrcchh wwaass ffuunnddeedd bbyy tthhee NNaattiioonnaall NNaattuurraall SScciieennccee FFoouunnddaattiioonn ooff CChhiinnaa ((NNSSFFCC));; Grant No. 61675041), the Foundation for Innovation Research Groups of NSFC (Grant No. 61421002), and the Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Author Contributions: Ding Zheng put forward the idea and the research plan, fabricated the OSC devices, and Author Contributions: Ding Zheng put forward the idea and the research plan, fabricated the OSC devices, and contributed to the writing of the manuscript. Junsheng Yu commented on various aspects during the writing of sthuep emrvainsuedsctrhipetw. Loirlki .Zhao, Pu Fan and Ran Ji assisted with the fabrication and with experiments. Junsheng Yu This research was funded by the National Natural Science Foundation of China (NSFC); Grant No. 61675041), the Foundation for Innovation Research Groups of NSFC (Grant No. 61421002), and the Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100).

Keywords

Bilayer cathode interlayer
In situ thermal reduction
Organic solar cell
PFN
Reduced graphene oxide

ASJC Scopus subject areas

General Chemical Engineering
General Materials Science

UN SDGs

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

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10.3390/nano7090233

Cite this

@article{3f0e75426cf941679ec2790e723e7ee9,

title = "Highly efficient and stable organic solar cells via interface engineering with a nanostructured ITR-GO/PFN bilayer cathode interlayer",

abstract = "An innovative bilayer cathode interlayer (CIL) with a nanostructure consisting of in situ thermal reduced graphene oxide (ITR-GO) and poly[(9,9-bis(3′ -(N,N-dimethylamion)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl) fluorene] (PFN) has been fabricated for inverted organic solar cells (OSCs). An approach to prepare a CIL of high electronic quality by using ITR-GO as a template to modulate the morphology of the interface between the active layer and electrode and to further reduce the work function of the electrode has also been realized. This bilayer ITR-GO/PFN CIL is processed by a spray-coating method with facile in situ thermal reduction. Meanwhile, the CIL shows a good charge transport efficiency and less charge recombination, which leads to a significant enhancement of the power conversion efficiency from 6.47% to 8.34% for Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′ ]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl) carbonyl]thieno[3,4-b]thiophenediyl} (PTB7):[6,6]-phenyl-C71 -butyric acid methyl ester (PC71 BM)-based OSCs. In addition, the long-term stability of the OSC is improved by using the ITR-GO/PFN CIL when compared with the pristine device. These results indicate that the bilayer ITR-GO/PFN CIL is a promising way to realize high-efficiency and stable OSCs by using water-soluble conjugated polymer electrolytes such as PFN.",

keywords = "Bilayer cathode interlayer, In situ thermal reduction, Organic solar cell, PFN, Reduced graphene oxide",

author = "Ding Zheng and Lili Zhao and Pu Fan and Ran Ji and Junsheng Yu",

note = "Funding Information: AAcckknnoowwlleeddggmmeennttss:: TThhiiss rreesseeaarrcchh wwaass ffuunnddeedd bbyy tthhee NNaattiioonnaall NNaattuurraall SScciieennccee FFoouunnddaattiioonn ooff CChhiinnaa ((NNSSFFCC));; Grant No. 61675041), the Foundation for Innovation Research Groups of NSFC (Grant No. 61421002), and the Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Author Contributions: Ding Zheng put forward the idea and the research plan, fabricated the OSC devices, and Author Contributions: Ding Zheng put forward the idea and the research plan, fabricated the OSC devices, and contributed to the writing of the manuscript. Junsheng Yu commented on various aspects during the writing of sthuep emrvainsuedsctrhipetw. Loirlki .Zhao, Pu Fan and Ran Ji assisted with the fabrication and with experiments. Junsheng Yu Funding Information: This research was funded by the National Natural Science Foundation of China (NSFC); Grant No. 61675041), the Foundation for Innovation Research Groups of NSFC (Grant No. 61421002), and the Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Publisher Copyright: {\textcopyright} 2017 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2017",

month = sep,

doi = "10.3390/nano7090233",

language = "English (US)",

volume = "7",

journal = "Nanomaterials",

issn = "2079-4991",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "9",

}

TY - JOUR

T1 - Highly efficient and stable organic solar cells via interface engineering with a nanostructured ITR-GO/PFN bilayer cathode interlayer

AU - Zheng, Ding

AU - Zhao, Lili

AU - Fan, Pu

AU - Ji, Ran

AU - Yu, Junsheng

N1 - Funding Information: AAcckknnoowwlleeddggmmeennttss:: TThhiiss rreesseeaarrcchh wwaass ffuunnddeedd bbyy tthhee NNaattiioonnaall NNaattuurraall SScciieennccee FFoouunnddaattiioonn ooff CChhiinnaa ((NNSSFFCC));; Grant No. 61675041), the Foundation for Innovation Research Groups of NSFC (Grant No. 61421002), and the Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Author Contributions: Ding Zheng put forward the idea and the research plan, fabricated the OSC devices, and Author Contributions: Ding Zheng put forward the idea and the research plan, fabricated the OSC devices, and contributed to the writing of the manuscript. Junsheng Yu commented on various aspects during the writing of sthuep emrvainsuedsctrhipetw. Loirlki .Zhao, Pu Fan and Ran Ji assisted with the fabrication and with experiments. Junsheng Yu Funding Information: This research was funded by the National Natural Science Foundation of China (NSFC); Grant No. 61675041), the Foundation for Innovation Research Groups of NSFC (Grant No. 61421002), and the Project of Science and Technology of Sichuan Province (Grant Nos. 2016HH0027 & 2016FZ0100). Publisher Copyright: © 2017 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2017/9

Y1 - 2017/9

N2 - An innovative bilayer cathode interlayer (CIL) with a nanostructure consisting of in situ thermal reduced graphene oxide (ITR-GO) and poly[(9,9-bis(3′ -(N,N-dimethylamion)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl) fluorene] (PFN) has been fabricated for inverted organic solar cells (OSCs). An approach to prepare a CIL of high electronic quality by using ITR-GO as a template to modulate the morphology of the interface between the active layer and electrode and to further reduce the work function of the electrode has also been realized. This bilayer ITR-GO/PFN CIL is processed by a spray-coating method with facile in situ thermal reduction. Meanwhile, the CIL shows a good charge transport efficiency and less charge recombination, which leads to a significant enhancement of the power conversion efficiency from 6.47% to 8.34% for Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′ ]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl) carbonyl]thieno[3,4-b]thiophenediyl} (PTB7):[6,6]-phenyl-C71 -butyric acid methyl ester (PC71 BM)-based OSCs. In addition, the long-term stability of the OSC is improved by using the ITR-GO/PFN CIL when compared with the pristine device. These results indicate that the bilayer ITR-GO/PFN CIL is a promising way to realize high-efficiency and stable OSCs by using water-soluble conjugated polymer electrolytes such as PFN.

AB - An innovative bilayer cathode interlayer (CIL) with a nanostructure consisting of in situ thermal reduced graphene oxide (ITR-GO) and poly[(9,9-bis(3′ -(N,N-dimethylamion)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl) fluorene] (PFN) has been fabricated for inverted organic solar cells (OSCs). An approach to prepare a CIL of high electronic quality by using ITR-GO as a template to modulate the morphology of the interface between the active layer and electrode and to further reduce the work function of the electrode has also been realized. This bilayer ITR-GO/PFN CIL is processed by a spray-coating method with facile in situ thermal reduction. Meanwhile, the CIL shows a good charge transport efficiency and less charge recombination, which leads to a significant enhancement of the power conversion efficiency from 6.47% to 8.34% for Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′ ]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl) carbonyl]thieno[3,4-b]thiophenediyl} (PTB7):[6,6]-phenyl-C71 -butyric acid methyl ester (PC71 BM)-based OSCs. In addition, the long-term stability of the OSC is improved by using the ITR-GO/PFN CIL when compared with the pristine device. These results indicate that the bilayer ITR-GO/PFN CIL is a promising way to realize high-efficiency and stable OSCs by using water-soluble conjugated polymer electrolytes such as PFN.

KW - Bilayer cathode interlayer

KW - In situ thermal reduction

KW - Organic solar cell

KW - PFN

KW - Reduced graphene oxide

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U2 - 10.3390/nano7090233

DO - 10.3390/nano7090233

M3 - Article

C2 - 28832508

AN - SCOPUS:85028443481

SN - 2079-4991

VL - 7

JO - Nanomaterials

JF - Nanomaterials

IS - 9

M1 - 233

ER -

Highly efficient and stable organic solar cells via interface engineering with a nanostructured ITR-GO/PFN bilayer cathode interlayer

Abstract

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

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