TY - JOUR
T1 - A new benzodithiophene based donor-acceptor π-conjugated polymer for organic solar cells
AU - Reddy, Saripally Sudhaker
AU - Aryal, Um Kanta
AU - Jin, Hyunjung
AU - Gokulnath, Thavamani
AU - Rajalapati, Durga Gayathri
AU - Kranthiraja, Kakaraparthi
AU - Shin, Sung Tae
AU - Jin, Sung Ho
PY - 2020/2/1
Y1 - 2020/2/1
N2 - A new benzodithiophene based donor-acceptor π-conjugated polymer (P1) is designed and explored as the photoactive donor for organic solar cells (OSCs). The synthesized donor polymer, P1 displays a wide absorption profile ranging from 300–750 nm with optical band gap of 1.61 eV and moderate ionization potential of −5.30 eV. It has good solubility in non-halogenated and halogenated organic solvents. Next, we fabricated OSCs with P1 by blending with PC71BM, the pristine polymer processed from chlorobenzene showed PCE of 2.79%. Upon addition of external additive diphenyl ether to the blend showed a dramatic improvement in PCE with maximum of 5.33%. DPE tailored the active layer morphology and showed two times higher PCE than pristine films. These results clearly indicate that the new polymer has a great potentiality for enhancing efficiency upon solvent additives, which will provide new routes for the development of new class of polymers for high-performance air-stable OSCs. [Figure not available: see fulltext.].
AB - A new benzodithiophene based donor-acceptor π-conjugated polymer (P1) is designed and explored as the photoactive donor for organic solar cells (OSCs). The synthesized donor polymer, P1 displays a wide absorption profile ranging from 300–750 nm with optical band gap of 1.61 eV and moderate ionization potential of −5.30 eV. It has good solubility in non-halogenated and halogenated organic solvents. Next, we fabricated OSCs with P1 by blending with PC71BM, the pristine polymer processed from chlorobenzene showed PCE of 2.79%. Upon addition of external additive diphenyl ether to the blend showed a dramatic improvement in PCE with maximum of 5.33%. DPE tailored the active layer morphology and showed two times higher PCE than pristine films. These results clearly indicate that the new polymer has a great potentiality for enhancing efficiency upon solvent additives, which will provide new routes for the development of new class of polymers for high-performance air-stable OSCs. [Figure not available: see fulltext.].
KW - benzodithiophene based π-conjugated polymer
KW - morphology
KW - octyl side chain
KW - organic solar cell
U2 - 10.1007/s13233-020-8079-z
DO - 10.1007/s13233-020-8079-z
M3 - Journal article
AN - SCOPUS:85079674538
SN - 1598-5032
VL - 28
SP - 179
EP - 183
JO - Macromolecular Research
JF - Macromolecular Research
IS - 2
ER -