Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics

Asfaw Negash; Zewdneh Genene; Raghavendran Thiruvallur Eachambadi; Pieter Verstappen; Niko Van den Brande; Jurgen Kesters; Jan D'Haen; Ergang Wang; Koen Vandewal; Wouter Maes; Jean Manca; Wendimagegn Mammo; Shimelis Admassie

doi:10.1016/j.orgel.2019.07.010

Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics

Asfaw Negash, Zewdneh Genene, Raghavendran Thiruvallur Eachambadi, Pieter Verstappen, Niko Van den Brande, Jurgen Kesters, Jan D'Haen, Ergang Wang, Koen Vandewal, Wouter Maes, Jean Manca, Wendimagegn Mammo, Shimelis Admassie

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Two push-pull type conjugated polymers - PIDTT−BTz and PIDTT−DTBTz, based on the ladder-type donor unit indacenodithieno[3,2-b]thiophene (IDTT) and bithiazole (BTz) as acceptor component - are designed and synthesized for photovoltaic applications. The polymers exhibit relatively high optical gaps of ~2.0 eV with strong absorption in the range of 400–600 nm, rendering them of particular interest for the harvesting of indoor light and/or multijunction devices. Electrochemical investigations indicate a lower highest occupied molecular orbital energy level (−5.44 eV) for PIDTT−BTz as compared to PIDTT−DTBTz (−5.36 eV), enabling to achieve a higher open-circuit voltage. Under solar illumination, the best power conversion efficiency (5.1%) is achieved for the combination PIDTT−DTBTz:PC71BM (compared to 4.6% for PIDTT−BTz:PC71BM).

Original language	English
Pages (from-to)	211-217
Number of pages	7
Journal	Organic Electronics
Volume	74
DOIs	https://doi.org/10.1016/j.orgel.2019.07.010
Publication status	Published - 1 Nov 2019

Keywords

Bithiazole
High gap polymers
Indacenodithieno[3,2-b]thiophene
Indoor photovoltaics
Organic solar cells

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Negash, Asfaw ; Genene, Zewdneh ; Eachambadi, Raghavendran Thiruvallur ; Verstappen, Pieter ; Van den Brande, Niko ; Kesters, Jurgen ; D'Haen, Jan ; Wang, Ergang ; Vandewal, Koen ; Maes, Wouter ; Manca, Jean ; Mammo, Wendimagegn ; Admassie, Shimelis. / Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics. In: Organic Electronics. 2019 ; Vol. 74. pp. 211-217.

@article{6a4d15cc30664f5e821c73371a97c4f0,

title = "Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics",

abstract = "Two push-pull type conjugated polymers - PIDTT−BTz and PIDTT−DTBTz, based on the ladder-type donor unit indacenodithieno[3,2-b]thiophene (IDTT) and bithiazole (BTz) as acceptor component - are designed and synthesized for photovoltaic applications. The polymers exhibit relatively high optical gaps of ~2.0 eV with strong absorption in the range of 400–600 nm, rendering them of particular interest for the harvesting of indoor light and/or multijunction devices. Electrochemical investigations indicate a lower highest occupied molecular orbital energy level (−5.44 eV) for PIDTT−BTz as compared to PIDTT−DTBTz (−5.36 eV), enabling to achieve a higher open-circuit voltage. Under solar illumination, the best power conversion efficiency (5.1{\%}) is achieved for the combination PIDTT−DTBTz:PC71BM (compared to 4.6{\%} for PIDTT−BTz:PC71BM).",

keywords = "Bithiazole, High gap polymers, Indacenodithieno[3,2-b]thiophene, Indoor photovoltaics, Organic solar cells",

author = "Asfaw Negash and Zewdneh Genene and Eachambadi, {Raghavendran Thiruvallur} and Pieter Verstappen and {Van den Brande}, Niko and Jurgen Kesters and Jan D'Haen and Ergang Wang and Koen Vandewal and Wouter Maes and Jean Manca and Wendimagegn Mammo and Shimelis Admassie",

year = "2019",

month = "11",

day = "1",

doi = "10.1016/j.orgel.2019.07.010",

language = "English",

volume = "74",

pages = "211--217",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier",

}

Negash, A, Genene, Z, Eachambadi, RT, Verstappen, P, Van den Brande, N, Kesters, J, D'Haen, J, Wang, E, Vandewal, K, Maes, W, Manca, J, Mammo, W & Admassie, S 2019, 'Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics', Organic Electronics, vol. 74, pp. 211-217. https://doi.org/10.1016/j.orgel.2019.07.010

Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics. / Negash, Asfaw; Genene, Zewdneh; Eachambadi, Raghavendran Thiruvallur; Verstappen, Pieter; Van den Brande, Niko; Kesters, Jurgen; D'Haen, Jan; Wang, Ergang; Vandewal, Koen; Maes, Wouter; Manca, Jean; Mammo, Wendimagegn; Admassie, Shimelis.

In: Organic Electronics, Vol. 74, 01.11.2019, p. 211-217.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Ladder-type high gap conjugated polymers based on indacenodithieno[3,2-b]thiophene and bithiazole for organic photovoltaics

AU - Negash, Asfaw

AU - Genene, Zewdneh

AU - Eachambadi, Raghavendran Thiruvallur

AU - Verstappen, Pieter

AU - Van den Brande, Niko

AU - Kesters, Jurgen

AU - D'Haen, Jan

AU - Wang, Ergang

AU - Vandewal, Koen

AU - Maes, Wouter

AU - Manca, Jean

AU - Mammo, Wendimagegn

AU - Admassie, Shimelis

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Two push-pull type conjugated polymers - PIDTT−BTz and PIDTT−DTBTz, based on the ladder-type donor unit indacenodithieno[3,2-b]thiophene (IDTT) and bithiazole (BTz) as acceptor component - are designed and synthesized for photovoltaic applications. The polymers exhibit relatively high optical gaps of ~2.0 eV with strong absorption in the range of 400–600 nm, rendering them of particular interest for the harvesting of indoor light and/or multijunction devices. Electrochemical investigations indicate a lower highest occupied molecular orbital energy level (−5.44 eV) for PIDTT−BTz as compared to PIDTT−DTBTz (−5.36 eV), enabling to achieve a higher open-circuit voltage. Under solar illumination, the best power conversion efficiency (5.1%) is achieved for the combination PIDTT−DTBTz:PC71BM (compared to 4.6% for PIDTT−BTz:PC71BM).

AB - Two push-pull type conjugated polymers - PIDTT−BTz and PIDTT−DTBTz, based on the ladder-type donor unit indacenodithieno[3,2-b]thiophene (IDTT) and bithiazole (BTz) as acceptor component - are designed and synthesized for photovoltaic applications. The polymers exhibit relatively high optical gaps of ~2.0 eV with strong absorption in the range of 400–600 nm, rendering them of particular interest for the harvesting of indoor light and/or multijunction devices. Electrochemical investigations indicate a lower highest occupied molecular orbital energy level (−5.44 eV) for PIDTT−BTz as compared to PIDTT−DTBTz (−5.36 eV), enabling to achieve a higher open-circuit voltage. Under solar illumination, the best power conversion efficiency (5.1%) is achieved for the combination PIDTT−DTBTz:PC71BM (compared to 4.6% for PIDTT−BTz:PC71BM).

KW - Bithiazole

KW - High gap polymers

KW - Indacenodithieno[3,2-b]thiophene

KW - Indoor photovoltaics

KW - Organic solar cells

UR - http://www.mendeley.com/research/laddertype-high-gap-conjugated-polymers-based-indacenodithieno32bthiophene-bithiazole-organic-photov

U2 - 10.1016/j.orgel.2019.07.010

DO - 10.1016/j.orgel.2019.07.010

M3 - Article

VL - 74

SP - 211

EP - 217

JO - Organic Electronics

JF - Organic Electronics

SN - 1566-1199

ER -