TY - JOUR
T1 - High Performance Air-Processed Organic Photovoltaic Modules (≈55 cm2) with an Efficiency of >17.50% by Employing Halogen-Free Solvent Processed Polymer Donors
AU - Gokulnath, Thavamani
AU - Kim, Hyerin
AU - Lee, Jieun
AU - Cho, Bo Hyeon
AU - Park, Ho Yeol
AU - Jee, Jesung
AU - Kim, Young Yong
AU - Kranthiraja, Kakaraparthi
AU - Yoon, Jinhwan
AU - Jin, Sung Ho
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/12/8
Y1 - 2023/12/8
N2 - Organic photovoltaic (OPV) sub-modules shall be feasible for production using halogen-free solvents in air,high power conversion efficiencies (PCEs), and long-term stability, which are challenging requirements. To achieve this goal, air-processed OPVs are fabricated by employing a synthesized set of π-conjugated polymers, NAP-T-SiBTZ (P1) and NAP-TT-SiBTZ (P2), with thiophene and thienothiophene π-spacers, respectively. P1 and P2 incorporated ternary OPVs show excellent PCEs and are used to produce small-area, sub-module air-processed devices using o-xylene as the solvent. Interestingly, P2-added ternary devices has remarkable PCEs of 17.62% (PM6:P2:Y7) and 17.96% (PM6:P2:L8-BO), which is the highest reported for air-processed OPVs. Notably, P2-associated ternary blends exhibit a nano-morphology, increased charge carrier mobilities, exciton dissociation, and decreased non-geminate recombination, which are deemed responsible for the enhanced PCEs observed. In addition, P2 demonstrates high efficiency for a thick-film device (>300 nm), with a PCE of >16.50%. Notably, a 55 cm2 sub-module produced by bar coating using o-xylene in open air has a PCE of 13.88%. Additionally, P2-containing devices demonstrate impressive thermal and photo-stabilities. This study shows the potential of an OPV that may be used to produce low-cost solar cell sub-module at low cost with exceptional commercial value.
AB - Organic photovoltaic (OPV) sub-modules shall be feasible for production using halogen-free solvents in air,high power conversion efficiencies (PCEs), and long-term stability, which are challenging requirements. To achieve this goal, air-processed OPVs are fabricated by employing a synthesized set of π-conjugated polymers, NAP-T-SiBTZ (P1) and NAP-TT-SiBTZ (P2), with thiophene and thienothiophene π-spacers, respectively. P1 and P2 incorporated ternary OPVs show excellent PCEs and are used to produce small-area, sub-module air-processed devices using o-xylene as the solvent. Interestingly, P2-added ternary devices has remarkable PCEs of 17.62% (PM6:P2:Y7) and 17.96% (PM6:P2:L8-BO), which is the highest reported for air-processed OPVs. Notably, P2-associated ternary blends exhibit a nano-morphology, increased charge carrier mobilities, exciton dissociation, and decreased non-geminate recombination, which are deemed responsible for the enhanced PCEs observed. In addition, P2 demonstrates high efficiency for a thick-film device (>300 nm), with a PCE of >16.50%. Notably, a 55 cm2 sub-module produced by bar coating using o-xylene in open air has a PCE of 13.88%. Additionally, P2-containing devices demonstrate impressive thermal and photo-stabilities. This study shows the potential of an OPV that may be used to produce low-cost solar cell sub-module at low cost with exceptional commercial value.
KW - air-processed
KW - halogen-free solvent
KW - high efficiency
KW - morphology control
KW - sub-module OPVs
UR - http://www.scopus.com/inward/record.url?scp=85174976997&partnerID=8YFLogxK
U2 - 10.1002/aenm.202302538
DO - 10.1002/aenm.202302538
M3 - Article
AN - SCOPUS:85174976997
SN - 1614-6832
VL - 13
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 46
M1 - 2302538
ER -