Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells

Chun Young Lee; Bongsoo Kim; Kyung Hwan Kim; Youngwoon Yoon; Min Woo Lee; Dong Hoon Choi; Min Jae Ko; Honggon Kim; Doh Kwon Lee; Kyungkon Kim

doi:10.1016/j.synthmet.2012.12.028

Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells

Chun Young Lee, Bongsoo Kim, Kyung Hwan Kim, Youngwoon Yoon, Min Woo Lee, Dong Hoon Choi, Min Jae Ko, Honggon Kim, Doh Kwon Lee, Kyungkon Kim

Department of Chemistry & Nanoscience

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

6 Scopus citations

Abstract

We designed and synthesized a new low band gap donor-acceptor copolymer (PDTDPP-Oct) composed of alternating dithieno[3,2-b:2′,3′-d] thiophene and bis-thienyl-diketopyrrolo[3,4-c]pyrrole units. The polymer films showed a very broad absorption band that extended up to 950 nm. Thermogravimetric analysis revealed good thermal stability and a high glass transition temperature of 128 °C. The highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the polymer were estimated to be -5.01 and -3.70 eV, respectively. Bulk heterojunction polymer solar cells were fabricated with the structure: ITO/PEDOT:PSS/polymer:PCBM/Al. The introduction of 1,8-octanedithiol as a processing additive to the polymer/PCBM blend solution significantly improved the device performance relative to devices prepared from the blend solution without the additive. This cell gave a short circuit current of -1.8 mA/cm², an open circuit voltage of 0.60 V, and a fill factor of 0.52, yielding a power conversion efficiency of 0.55%. The performance improvements were mainly attributed to the fine morphology of the blend film.

Original language	English
Pages (from-to)	64-68
Number of pages	5
Journal	Synthetic Metals
Volume	164
Issue number	1
DOIs	https://doi.org/10.1016/j.synthmet.2012.12.028
State	Published - 2013

Bibliographical note

Funding Information:
This work was supported by the New and Renewable Energy Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), under a grant funded by the Ministry of Knowledge Economy (MKE) ( 20113030010060 ). This work was also supported by grants from the Korea Research Council of Fundamental Science and Technology (KRCF) and the Korea Institute of Science and Technology (KIST) for “NAP National Agenda Project Program”.

Keywords

Low band gap polymer
Morphology
Polymer solar cells
Power conversion efficiency
Wide range light absorption

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10.1016/j.synthmet.2012.12.028

Cite this

Lee, C. Y., Kim, B., Kim, K. H., Yoon, Y., Lee, M. W., Choi, D. H., Ko, M. J., Kim, H., Lee, D. K., & Kim, K. (2013). Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells. Synthetic Metals, 164(1), 64-68. https://doi.org/10.1016/j.synthmet.2012.12.028

@article{61bd9cc837b94f729680e57d5063c72d,

title = "Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells",

abstract = "We designed and synthesized a new low band gap donor-acceptor copolymer (PDTDPP-Oct) composed of alternating dithieno[3,2-b:2′,3′-d] thiophene and bis-thienyl-diketopyrrolo[3,4-c]pyrrole units. The polymer films showed a very broad absorption band that extended up to 950 nm. Thermogravimetric analysis revealed good thermal stability and a high glass transition temperature of 128 °C. The highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the polymer were estimated to be -5.01 and -3.70 eV, respectively. Bulk heterojunction polymer solar cells were fabricated with the structure: ITO/PEDOT:PSS/polymer:PCBM/Al. The introduction of 1,8-octanedithiol as a processing additive to the polymer/PCBM blend solution significantly improved the device performance relative to devices prepared from the blend solution without the additive. This cell gave a short circuit current of -1.8 mA/cm2, an open circuit voltage of 0.60 V, and a fill factor of 0.52, yielding a power conversion efficiency of 0.55%. The performance improvements were mainly attributed to the fine morphology of the blend film.",

keywords = "Low band gap polymer, Morphology, Polymer solar cells, Power conversion efficiency, Wide range light absorption",

author = "Lee, {Chun Young} and Bongsoo Kim and Kim, {Kyung Hwan} and Youngwoon Yoon and Lee, {Min Woo} and Choi, {Dong Hoon} and Ko, {Min Jae} and Honggon Kim and Lee, {Doh Kwon} and Kyungkon Kim",

note = "Funding Information: This work was supported by the New and Renewable Energy Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), under a grant funded by the Ministry of Knowledge Economy (MKE) ( 20113030010060 ). This work was also supported by grants from the Korea Research Council of Fundamental Science and Technology (KRCF) and the Korea Institute of Science and Technology (KIST) for “NAP National Agenda Project Program”.",

year = "2013",

doi = "10.1016/j.synthmet.2012.12.028",

language = "English",

volume = "164",

pages = "64--68",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

number = "1",

}

Lee, CY, Kim, B, Kim, KH, Yoon, Y, Lee, MW, Choi, DH, Ko, MJ, Kim, H, Lee, DK & Kim, K 2013, 'Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells', Synthetic Metals, vol. 164, no. 1, pp. 64-68. https://doi.org/10.1016/j.synthmet.2012.12.028

Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells. / Lee, Chun Young; Kim, Bongsoo; Kim, Kyung Hwan et al.
In: Synthetic Metals, Vol. 164, No. 1, 2013, p. 64-68.

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

TY - JOUR

T1 - Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells

AU - Lee, Chun Young

AU - Kim, Bongsoo

AU - Kim, Kyung Hwan

AU - Yoon, Youngwoon

AU - Lee, Min Woo

AU - Choi, Dong Hoon

AU - Ko, Min Jae

AU - Kim, Honggon

AU - Lee, Doh Kwon

AU - Kim, Kyungkon

N1 - Funding Information: This work was supported by the New and Renewable Energy Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), under a grant funded by the Ministry of Knowledge Economy (MKE) ( 20113030010060 ). This work was also supported by grants from the Korea Research Council of Fundamental Science and Technology (KRCF) and the Korea Institute of Science and Technology (KIST) for “NAP National Agenda Project Program”.

PY - 2013

Y1 - 2013

N2 - We designed and synthesized a new low band gap donor-acceptor copolymer (PDTDPP-Oct) composed of alternating dithieno[3,2-b:2′,3′-d] thiophene and bis-thienyl-diketopyrrolo[3,4-c]pyrrole units. The polymer films showed a very broad absorption band that extended up to 950 nm. Thermogravimetric analysis revealed good thermal stability and a high glass transition temperature of 128 °C. The highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the polymer were estimated to be -5.01 and -3.70 eV, respectively. Bulk heterojunction polymer solar cells were fabricated with the structure: ITO/PEDOT:PSS/polymer:PCBM/Al. The introduction of 1,8-octanedithiol as a processing additive to the polymer/PCBM blend solution significantly improved the device performance relative to devices prepared from the blend solution without the additive. This cell gave a short circuit current of -1.8 mA/cm2, an open circuit voltage of 0.60 V, and a fill factor of 0.52, yielding a power conversion efficiency of 0.55%. The performance improvements were mainly attributed to the fine morphology of the blend film.

AB - We designed and synthesized a new low band gap donor-acceptor copolymer (PDTDPP-Oct) composed of alternating dithieno[3,2-b:2′,3′-d] thiophene and bis-thienyl-diketopyrrolo[3,4-c]pyrrole units. The polymer films showed a very broad absorption band that extended up to 950 nm. Thermogravimetric analysis revealed good thermal stability and a high glass transition temperature of 128 °C. The highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the polymer were estimated to be -5.01 and -3.70 eV, respectively. Bulk heterojunction polymer solar cells were fabricated with the structure: ITO/PEDOT:PSS/polymer:PCBM/Al. The introduction of 1,8-octanedithiol as a processing additive to the polymer/PCBM blend solution significantly improved the device performance relative to devices prepared from the blend solution without the additive. This cell gave a short circuit current of -1.8 mA/cm2, an open circuit voltage of 0.60 V, and a fill factor of 0.52, yielding a power conversion efficiency of 0.55%. The performance improvements were mainly attributed to the fine morphology of the blend film.

KW - Low band gap polymer

KW - Morphology

KW - Polymer solar cells

KW - Power conversion efficiency

KW - Wide range light absorption

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U2 - 10.1016/j.synthmet.2012.12.028

DO - 10.1016/j.synthmet.2012.12.028

M3 - Article

AN - SCOPUS:84872981149

SN - 0379-6779

VL - 164

SP - 64

EP - 68

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1

ER -

Synthesis and characterization of wide range light absorbing poly(dithieno[3,2-b:2′,3′-d]thiophene-alt-3,6-bis(thiophen-2-yl)-2, 5-di-n-octyl-pyrrolo[3,4-c]pyrrole-1,4-dione) for polymer solar cells

Abstract

Bibliographical note

Keywords

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