TY - JOUR
T1 - Multifunctional PMMA intermediate layer for sequentially deposited organic photovoltaics
AU - Wei, Songtao
AU - Li, Hongxiang
AU - Wang, Ruohao
AU - Dela Peña, Top Archie
AU - Tang, Hua
AU - Yu, Hailin
AU - Gonzalez Lopez, Sandra P.
AU - Wang, Jiayu
AU - Li, Mingjie
AU - Wu, Jiaying
AU - Lu, Guanghao
AU - Lu, Shirong
AU - Zhao, Dewei
AU - Yan, Cenqi
AU - Laquai, Frédéric
AU - Cheng, Pei
N1 - Publisher Copyright:
© 2024 The Royal Society of Chemistry.
PY - 2024/5/1
Y1 - 2024/5/1
N2 - Enhancing exciton generation, promoting exciton dissociation, and facilitating charge transport and collection within the photoactive layer is crucial for improving the performance of organic photovoltaics (OPVs). In this study, we achieved an optimal vertical distribution of the insulating polymer polymethyl methacrylate (PMMA) in the active layer through sequential deposition. This appropriate distribution of PMMA inhibited the aggregation of the acceptor, and reduced the donor-acceptor phase separation, increased exciton generation, promoted exciton dissociation, and inhibited bimolecular recombination. OPVs based on PM6/PMMA/L8-BO achieved a maximum efficiency of 18.1%, surpassing that of devices without PMMA. By tuning the vertical segregation of multi-components and molecular packing behaviors, this study provides an efficient method for achieving high performance by synergistically enhancing exciton generation, promoting exciton dissociation, inhibiting bimolecular recombination, and facilitating charge collection through PMMA.
AB - Enhancing exciton generation, promoting exciton dissociation, and facilitating charge transport and collection within the photoactive layer is crucial for improving the performance of organic photovoltaics (OPVs). In this study, we achieved an optimal vertical distribution of the insulating polymer polymethyl methacrylate (PMMA) in the active layer through sequential deposition. This appropriate distribution of PMMA inhibited the aggregation of the acceptor, and reduced the donor-acceptor phase separation, increased exciton generation, promoted exciton dissociation, and inhibited bimolecular recombination. OPVs based on PM6/PMMA/L8-BO achieved a maximum efficiency of 18.1%, surpassing that of devices without PMMA. By tuning the vertical segregation of multi-components and molecular packing behaviors, this study provides an efficient method for achieving high performance by synergistically enhancing exciton generation, promoting exciton dissociation, inhibiting bimolecular recombination, and facilitating charge collection through PMMA.
UR - http://www.scopus.com/inward/record.url?scp=85193263067&partnerID=8YFLogxK
U2 - 10.1039/d4ta01335b
DO - 10.1039/d4ta01335b
M3 - Journal article
AN - SCOPUS:85193263067
SN - 2050-7488
VL - 12
SP - 13751
EP - 13759
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 23
ER -