Abstract
Two new random terpolymers containing 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene (BDT) as a donating unit, methyl-3-thiophenecarboxylate (3MT) as a weak accepting unit, and the more electron-deficient benzo[c][1,2,5]thiadiazole (BTz) or 5,5′-bis(2-ethylhexyl)-4H,4′H-1,1′-bithieno[3,4-c]pyrrole-4,4′,6,6′(5H,5′H)-tetraone (BiTPD) unit as a third monomer (respectively yielding 3MTB and 3MTT) were synthesized in order to achieve improved physical and optoelectronic properties relative to the 3MT-Th copolymer bearing only BDT and 3MT. The UV–vis absorption spectra and optical bandgap energies of these terpolymers were broader and smaller than those of the 3MT-Th copolymer. In thin films, the terpolymers displayed the face-on polymer chain orientation, indicating that the BTz or BiTPD unit in the terpolymer backbones did not affect the molecular arrangement on the substrate. In comparison with 3MT-Th-based polymer solar cells (PSCs) as control devices, the PSCs employing blend films of these terpolymers as the donor and 2,2′-[[6,6,12,12-Tetrakis(4-hexylphenyl)-6,12-dihydrodithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene-2,8-diyl]bis[methylidyne(3-oxo-1H-indene-2,1(3H)-diylidene)]]bis[propanedinitrile] (ITIC) as the acceptor exhibited higher power conversion efficiencies (>8.0%) for the same device configuration. In addition, the 3MTB- and 3MTT-based PSC devices displayed excellent shelf-life even after aging for over 1000 h.
| Original language | English |
|---|---|
| Pages (from-to) | 1528-1535 |
| Number of pages | 8 |
| Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
| Volume | 56 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2018 Jul 15 |
Fingerprint
Keywords
- high stability
- miscibility
- morphology
- polymer solar cell
- random terpolymer
- spin coating
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry
Cite this
High-performing random terpolymer-based nonfullerene polymer solar cells fabricated using solvent additive-free as-cast blend films. / Hoang, Mai Ha; Park, Gi Eun; Phan, Dinh Long; Ngo, Trinh Tung; Nguyen, Tuyen Van; Park, Su Hong; Cho, Min Ju; Choi, Dong Hoon.
In: Journal of Polymer Science, Part A: Polymer Chemistry, Vol. 56, No. 14, 15.07.2018, p. 1528-1535.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High-performing random terpolymer-based nonfullerene polymer solar cells fabricated using solvent additive-free as-cast blend films
AU - Hoang, Mai Ha
AU - Park, Gi Eun
AU - Phan, Dinh Long
AU - Ngo, Trinh Tung
AU - Nguyen, Tuyen Van
AU - Park, Su Hong
AU - Cho, Min Ju
AU - Choi, Dong Hoon
PY - 2018/7/15
Y1 - 2018/7/15
N2 - Two new random terpolymers containing 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene (BDT) as a donating unit, methyl-3-thiophenecarboxylate (3MT) as a weak accepting unit, and the more electron-deficient benzo[c][1,2,5]thiadiazole (BTz) or 5,5′-bis(2-ethylhexyl)-4H,4′H-1,1′-bithieno[3,4-c]pyrrole-4,4′,6,6′(5H,5′H)-tetraone (BiTPD) unit as a third monomer (respectively yielding 3MTB and 3MTT) were synthesized in order to achieve improved physical and optoelectronic properties relative to the 3MT-Th copolymer bearing only BDT and 3MT. The UV–vis absorption spectra and optical bandgap energies of these terpolymers were broader and smaller than those of the 3MT-Th copolymer. In thin films, the terpolymers displayed the face-on polymer chain orientation, indicating that the BTz or BiTPD unit in the terpolymer backbones did not affect the molecular arrangement on the substrate. In comparison with 3MT-Th-based polymer solar cells (PSCs) as control devices, the PSCs employing blend films of these terpolymers as the donor and 2,2′-[[6,6,12,12-Tetrakis(4-hexylphenyl)-6,12-dihydrodithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene-2,8-diyl]bis[methylidyne(3-oxo-1H-indene-2,1(3H)-diylidene)]]bis[propanedinitrile] (ITIC) as the acceptor exhibited higher power conversion efficiencies (>8.0%) for the same device configuration. In addition, the 3MTB- and 3MTT-based PSC devices displayed excellent shelf-life even after aging for over 1000 h.
AB - Two new random terpolymers containing 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene (BDT) as a donating unit, methyl-3-thiophenecarboxylate (3MT) as a weak accepting unit, and the more electron-deficient benzo[c][1,2,5]thiadiazole (BTz) or 5,5′-bis(2-ethylhexyl)-4H,4′H-1,1′-bithieno[3,4-c]pyrrole-4,4′,6,6′(5H,5′H)-tetraone (BiTPD) unit as a third monomer (respectively yielding 3MTB and 3MTT) were synthesized in order to achieve improved physical and optoelectronic properties relative to the 3MT-Th copolymer bearing only BDT and 3MT. The UV–vis absorption spectra and optical bandgap energies of these terpolymers were broader and smaller than those of the 3MT-Th copolymer. In thin films, the terpolymers displayed the face-on polymer chain orientation, indicating that the BTz or BiTPD unit in the terpolymer backbones did not affect the molecular arrangement on the substrate. In comparison with 3MT-Th-based polymer solar cells (PSCs) as control devices, the PSCs employing blend films of these terpolymers as the donor and 2,2′-[[6,6,12,12-Tetrakis(4-hexylphenyl)-6,12-dihydrodithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene-2,8-diyl]bis[methylidyne(3-oxo-1H-indene-2,1(3H)-diylidene)]]bis[propanedinitrile] (ITIC) as the acceptor exhibited higher power conversion efficiencies (>8.0%) for the same device configuration. In addition, the 3MTB- and 3MTT-based PSC devices displayed excellent shelf-life even after aging for over 1000 h.
KW - high stability
KW - miscibility
KW - morphology
KW - polymer solar cell
KW - random terpolymer
KW - spin coating
UR - http://www.scopus.com/inward/record.url?scp=85048310661&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048310661&partnerID=8YFLogxK
U2 - 10.1002/pola.29034
DO - 10.1002/pola.29034
M3 - Article
AN - SCOPUS:85048310661
VL - 56
SP - 1528
EP - 1535
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
SN - 0887-624X
IS - 14
ER -