TY - JOUR
T1 - Highly Efficient Bilayer Polymer Solar Cells Using the Method of Sequential Processing with Additive Bilayer
AU - Lee, Jihoon
AU - Jang, Soyeong
AU - Tamilavan, Vellaiappillai
AU - Li, Ning
AU - Wang, Rong
AU - Lüer, Larry
AU - Lee, Dalyong
AU - Yoon, Jung Won
AU - Lee, Bo Ram
AU - Choi, Hyosung
AU - Park, Sung Heum
AU - Brabec, Christoph J.
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/3
Y1 - 2023/3
N2 - Despite the research value of bilayer organic solar cells (OSCs) for commercialization in the future, the bulk-heterojunction (BHJ) structure dominates the fabrication of OSCs because of its higher power conversion efficiency (PCE) compared with bilayer OSCs. Herein, four different types of bilayer OSC structures using sequential processing (SP) with an additive bilayer are investigated and considerably enhanced device performance is demonstrated. The performance of our bilayer devices based on a wide bandgap (PBDT-DPPD-TPD; P2) polymer and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) is improved from 2.88% for the conventional bilayer structure to 6.62%. More importantly, remarkable PCEs of 8.78% and 15.16% for PTB7-Th/PCBM and PM6/Y6 bilayer OSCs, respectively, using the SP with additive bilayer method are achieved and the inhomogeneity issues of the BHJ structure are successfully addressed. Herein, a novel way to overcome the low efficiency of bilayer OSCs is suggested and an unprecedented possibility of renovation, breaking the standardization of OSC research, is presented.
AB - Despite the research value of bilayer organic solar cells (OSCs) for commercialization in the future, the bulk-heterojunction (BHJ) structure dominates the fabrication of OSCs because of its higher power conversion efficiency (PCE) compared with bilayer OSCs. Herein, four different types of bilayer OSC structures using sequential processing (SP) with an additive bilayer are investigated and considerably enhanced device performance is demonstrated. The performance of our bilayer devices based on a wide bandgap (PBDT-DPPD-TPD; P2) polymer and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) is improved from 2.88% for the conventional bilayer structure to 6.62%. More importantly, remarkable PCEs of 8.78% and 15.16% for PTB7-Th/PCBM and PM6/Y6 bilayer OSCs, respectively, using the SP with additive bilayer method are achieved and the inhomogeneity issues of the BHJ structure are successfully addressed. Herein, a novel way to overcome the low efficiency of bilayer OSCs is suggested and an unprecedented possibility of renovation, breaking the standardization of OSC research, is presented.
KW - bilayer structures
KW - high efficiency
KW - organic solar modules
KW - polymer solar cells
KW - processing additives
UR - https://www.scopus.com/pages/publications/85146071876
U2 - 10.1002/solr.202201023
DO - 10.1002/solr.202201023
M3 - Article
AN - SCOPUS:85146071876
SN - 2367-198X
VL - 7
JO - Solar RRL
JF - Solar RRL
IS - 5
M1 - 2201023
ER -
