Bulk Heterojunctions Based on a Low Band Gap Copolymer of Thiophene and Benzothiadiazole

Eva Bundgaard; Sean E. Shaheen; Frederik C. Krebs; David S. Ginley

doi:10.1016/j.solmat.2007.05.013

Bulk Heterojunctions Based on a Low Band Gap Copolymer of Thiophene and Benzothiadiazole

Eva Bundgaard, Sean E. Shaheen, Frederik C. Krebs, David S. Ginley

Materials, Chemical, and Computational Science

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

44 Scopus Citations

Abstract

We report on the incorporation of a low band gap copolymer based on thiophene and benzothiadiazole with a band gap of 1.65 eV into a bulk heterojunction device with the structure ITO/PEDOT:PSS/polymer:PCBM/Al. We have investigated the effects of process variable, including choice of solvent, polymer concentration and annealing temperature, on the photovoltaic device performance. The devices show spectral response down to the absorption edge of 1.65 eV and exhibit an efficiency of 1% under AM1.5 illumination and a peak external quantum efficiency of 18% at 600 nm.

Original language	American English
Pages (from-to)	1631-1637
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	91
Issue number	17
DOIs	https://doi.org/10.1016/j.solmat.2007.05.013 https://doi.org/10.1016/j.solmat.2007.05.013
State	Published - 2007

NREL Publication Number

NREL/JA-520-42161

Keywords

Device optimization
Efficiency
Low band gap polymers
Organic photovoltaic

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title = "Bulk Heterojunctions Based on a Low Band Gap Copolymer of Thiophene and Benzothiadiazole",

abstract = "We report on the incorporation of a low band gap copolymer based on thiophene and benzothiadiazole with a band gap of 1.65 eV into a bulk heterojunction device with the structure ITO/PEDOT:PSS/polymer:PCBM/Al. We have investigated the effects of process variable, including choice of solvent, polymer concentration and annealing temperature, on the photovoltaic device performance. The devices show spectral response down to the absorption edge of 1.65 eV and exhibit an efficiency of 1% under AM1.5 illumination and a peak external quantum efficiency of 18% at 600 nm.",

keywords = "Device optimization, Efficiency, Low band gap polymers, Organic photovoltaic",

author = "Eva Bundgaard and Shaheen, {Sean E.} and Krebs, {Frederik C.} and Ginley, {David S.}",

year = "2007",

doi = "10.1016/j.solmat.2007.05.013",

language = "American English",

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pages = "1631--1637",

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T1 - Bulk Heterojunctions Based on a Low Band Gap Copolymer of Thiophene and Benzothiadiazole

AU - Bundgaard, Eva

AU - Shaheen, Sean E.

AU - Krebs, Frederik C.

AU - Ginley, David S.

PY - 2007

Y1 - 2007

N2 - We report on the incorporation of a low band gap copolymer based on thiophene and benzothiadiazole with a band gap of 1.65 eV into a bulk heterojunction device with the structure ITO/PEDOT:PSS/polymer:PCBM/Al. We have investigated the effects of process variable, including choice of solvent, polymer concentration and annealing temperature, on the photovoltaic device performance. The devices show spectral response down to the absorption edge of 1.65 eV and exhibit an efficiency of 1% under AM1.5 illumination and a peak external quantum efficiency of 18% at 600 nm.

AB - We report on the incorporation of a low band gap copolymer based on thiophene and benzothiadiazole with a band gap of 1.65 eV into a bulk heterojunction device with the structure ITO/PEDOT:PSS/polymer:PCBM/Al. We have investigated the effects of process variable, including choice of solvent, polymer concentration and annealing temperature, on the photovoltaic device performance. The devices show spectral response down to the absorption edge of 1.65 eV and exhibit an efficiency of 1% under AM1.5 illumination and a peak external quantum efficiency of 18% at 600 nm.

KW - Device optimization

KW - Efficiency

KW - Low band gap polymers

KW - Organic photovoltaic

UR - http://www.scopus.com/inward/record.url?scp=34547860504&partnerID=8YFLogxK

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DO - 10.1016/j.solmat.2007.05.013

M3 - Article

AN - SCOPUS:34547860504

SN - 0927-0248

VL - 91

SP - 1631

EP - 1637

JO - Solar Energy Materials and Solar Cells

JF - Solar Energy Materials and Solar Cells

IS - 17

ER -

Bulk Heterojunctions Based on a Low Band Gap Copolymer of Thiophene and Benzothiadiazole

Abstract

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Keywords

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