Synthesis and characterization of dimethyl-benzimidazole based low bandgap copolymers for OPVs

Suhee Song; Junkuk Kim; Joo Young Shim; Geunjin Kim; Byoung Hoon Lee; Youngeup Jin; Sung Heum Park; Il Kim; Kwanghee Lee; Hongsuk Suh

doi:10.1016/j.synthmet.2012.04.014

Synthesis and characterization of dimethyl-benzimidazole based low bandgap copolymers for OPVs

Suhee Song, Junkuk Kim, Joo Young Shim, Geunjin Kim, Byoung Hoon Lee, Youngeup Jin, Sung Heum Park, Il Kim, Kwanghee Lee, Hongsuk Suh

Chemical Engineering & Materials Science

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

4 Scopus citations

Abstract

The advantage of dimethyl-2H-benzimidazole compared to the benzothiadiazole moiety of PCDTBT is to improve the solubility of the polymer while keeping the 1,2-quinoid form to lead coplanarity of the backbone. New random copolymers, to broaden the absorption range for the wider coverage of the solar spectrum, were synthesized by Stille coupling reactions to generate PCPPDTMBIs (or PCPPBBTMBIs). The solid films of PCPPDTMBIs show absorption bands with two maximum peaks at about 408-417 and 613-640 nm. The PCPPBBTMBIs show two maxima peaks at about 440-444 and 627-650 nm which are red-shifted about 5-30 nm as compared to PCPPDTMBIs caused by the introduction of bithiophene units. The device with PCPPBBTMBI7:PC ₇₁BM blend demonstrated a V _OC value of 0.64 V, a J _SC value of 2.12 mA/cm ², and a FF of 0.34, leading to the efficiency of 0.46%.

Original language	English
Pages (from-to)	988-994
Number of pages	7
Journal	Synthetic Metals
Volume	162
Issue number	11-12
DOIs	https://doi.org/10.1016/j.synthmet.2012.04.014
State	Published - Jul 2012

Keywords

Dimethyl-2H-benzimidazole
Photovoltaic cells
Polymer

UN SDGs

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

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10.1016/j.synthmet.2012.04.014

Cite this

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title = "Synthesis and characterization of dimethyl-benzimidazole based low bandgap copolymers for OPVs",

abstract = "The advantage of dimethyl-2H-benzimidazole compared to the benzothiadiazole moiety of PCDTBT is to improve the solubility of the polymer while keeping the 1,2-quinoid form to lead coplanarity of the backbone. New random copolymers, to broaden the absorption range for the wider coverage of the solar spectrum, were synthesized by Stille coupling reactions to generate PCPPDTMBIs (or PCPPBBTMBIs). The solid films of PCPPDTMBIs show absorption bands with two maximum peaks at about 408-417 and 613-640 nm. The PCPPBBTMBIs show two maxima peaks at about 440-444 and 627-650 nm which are red-shifted about 5-30 nm as compared to PCPPDTMBIs caused by the introduction of bithiophene units. The device with PCPPBBTMBI7:PC 71BM blend demonstrated a V OC value of 0.64 V, a J SC value of 2.12 mA/cm 2, and a FF of 0.34, leading to the efficiency of 0.46%.",

keywords = "Dimethyl-2H-benzimidazole, Photovoltaic cells, Polymer",

author = "Suhee Song and Junkuk Kim and Shim, {Joo Young} and Geunjin Kim and Lee, {Byoung Hoon} and Youngeup Jin and Park, {Sung Heum} and Il Kim and Kwanghee Lee and Hongsuk Suh",

note = "Funding Information: This work was supported by Biomedical Treatment Technology Development Project (No. 2015M3A9D7067418) and Wearable Platform Materials Technology Center (WMC) funded by the National Research Foundation (NRF) of Korea Grant of the Korean Government (Ministry of Science, ICT and Future Planning) (No. 5662016R1A5A1009926). This research was also supported by Research and Business Development Program through the Korea Institute for Advancement of Technology(KIAT) funded by the Ministry of Trade, Industry and Energy(MOTIE) (grant number : N0002418), and Global Frontier Project (CISS-2011-0031870), funded by the Ministry of Science, ICT and Future Planning.",

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doi = "10.1016/j.synthmet.2012.04.014",

language = "English",

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T1 - Synthesis and characterization of dimethyl-benzimidazole based low bandgap copolymers for OPVs

AU - Song, Suhee

AU - Kim, Junkuk

AU - Shim, Joo Young

AU - Kim, Geunjin

AU - Lee, Byoung Hoon

AU - Jin, Youngeup

AU - Park, Sung Heum

AU - Kim, Il

AU - Lee, Kwanghee

AU - Suh, Hongsuk

N1 - Funding Information: This work was supported by Biomedical Treatment Technology Development Project (No. 2015M3A9D7067418) and Wearable Platform Materials Technology Center (WMC) funded by the National Research Foundation (NRF) of Korea Grant of the Korean Government (Ministry of Science, ICT and Future Planning) (No. 5662016R1A5A1009926). This research was also supported by Research and Business Development Program through the Korea Institute for Advancement of Technology(KIAT) funded by the Ministry of Trade, Industry and Energy(MOTIE) (grant number : N0002418), and Global Frontier Project (CISS-2011-0031870), funded by the Ministry of Science, ICT and Future Planning.

PY - 2012/7

Y1 - 2012/7

N2 - The advantage of dimethyl-2H-benzimidazole compared to the benzothiadiazole moiety of PCDTBT is to improve the solubility of the polymer while keeping the 1,2-quinoid form to lead coplanarity of the backbone. New random copolymers, to broaden the absorption range for the wider coverage of the solar spectrum, were synthesized by Stille coupling reactions to generate PCPPDTMBIs (or PCPPBBTMBIs). The solid films of PCPPDTMBIs show absorption bands with two maximum peaks at about 408-417 and 613-640 nm. The PCPPBBTMBIs show two maxima peaks at about 440-444 and 627-650 nm which are red-shifted about 5-30 nm as compared to PCPPDTMBIs caused by the introduction of bithiophene units. The device with PCPPBBTMBI7:PC 71BM blend demonstrated a V OC value of 0.64 V, a J SC value of 2.12 mA/cm 2, and a FF of 0.34, leading to the efficiency of 0.46%.

AB - The advantage of dimethyl-2H-benzimidazole compared to the benzothiadiazole moiety of PCDTBT is to improve the solubility of the polymer while keeping the 1,2-quinoid form to lead coplanarity of the backbone. New random copolymers, to broaden the absorption range for the wider coverage of the solar spectrum, were synthesized by Stille coupling reactions to generate PCPPDTMBIs (or PCPPBBTMBIs). The solid films of PCPPDTMBIs show absorption bands with two maximum peaks at about 408-417 and 613-640 nm. The PCPPBBTMBIs show two maxima peaks at about 440-444 and 627-650 nm which are red-shifted about 5-30 nm as compared to PCPPDTMBIs caused by the introduction of bithiophene units. The device with PCPPBBTMBI7:PC 71BM blend demonstrated a V OC value of 0.64 V, a J SC value of 2.12 mA/cm 2, and a FF of 0.34, leading to the efficiency of 0.46%.

KW - Dimethyl-2H-benzimidazole

KW - Photovoltaic cells

KW - Polymer

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SN - 0379-6779

VL - 162

SP - 988

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JO - Synthetic Metals

JF - Synthetic Metals

IS - 11-12

ER -

Synthesis and characterization of dimethyl-benzimidazole based low bandgap copolymers for OPVs

Abstract

Keywords

UN SDGs

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