TY - JOUR
T1 - Copper ion-modified oxyl-terminated melem nanodisks for enhanced performance of organic and perovskite solar cells
AU - Liu, Fengwu
AU - Xu, Jiacheng
AU - Ma, Yongchao
AU - Ahn, Yoomi
AU - Hangoma, Pesi Mwitumwa
AU - Yang, Eunhye
AU - Lee, Bo Ram
AU - Park, Sung Heum
N1 - Publisher Copyright:
© 2025 Science Press
PY - 2025/10
Y1 - 2025/10
N2 - The limited charge extraction efficiency and suboptimal energy-level alignment of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as a hole transport layer restrict its performance in solar cell applications. In this study, we developed effective copper-ion (Cu(II))-modified oxyl-terminated melem two-dimensional (2D) nanodisks (Cu(II)@OMN) that improved the performance of PEDOT:PSS as a representative hole-transport layer (HTL) in organic and perovskite solar cells. Based on theoretical calculations and experimental data, the interaction between Cu(II)@OMN and PEDOT or PSS led to electron redistribution in PEDOT:PSS and the dissociation of PEDOT and PSS, promoting enhanced charge extraction and transfer. In addition, the work function of the Cu(II)@OMN-PEDOT:PSS is modified to achieve a more beneficial energy-level alignment, thereby facilitating improved hole transport and inhibited nonradiative recombination. Methylammonium (MA)-based perovskite and organic binary PM6:Y6 solar cells achieved power conversion efficiencies (PCEs) of 19.21% and 17.15%, respectively. These PCEs are among the highest reported for MA-based perovskite and binary PM6:Y6 organic solar cells that use 2D nanomaterial-modified PEDOT:PSS, demonstrating the potential of Cu(II)@OMN in solar cell applications.
AB - The limited charge extraction efficiency and suboptimal energy-level alignment of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as a hole transport layer restrict its performance in solar cell applications. In this study, we developed effective copper-ion (Cu(II))-modified oxyl-terminated melem two-dimensional (2D) nanodisks (Cu(II)@OMN) that improved the performance of PEDOT:PSS as a representative hole-transport layer (HTL) in organic and perovskite solar cells. Based on theoretical calculations and experimental data, the interaction between Cu(II)@OMN and PEDOT or PSS led to electron redistribution in PEDOT:PSS and the dissociation of PEDOT and PSS, promoting enhanced charge extraction and transfer. In addition, the work function of the Cu(II)@OMN-PEDOT:PSS is modified to achieve a more beneficial energy-level alignment, thereby facilitating improved hole transport and inhibited nonradiative recombination. Methylammonium (MA)-based perovskite and organic binary PM6:Y6 solar cells achieved power conversion efficiencies (PCEs) of 19.21% and 17.15%, respectively. These PCEs are among the highest reported for MA-based perovskite and binary PM6:Y6 organic solar cells that use 2D nanomaterial-modified PEDOT:PSS, demonstrating the potential of Cu(II)@OMN in solar cell applications.
KW - Copper ion modification
KW - Organic solar cells
KW - Oxyl-terminated melem
KW - Perovskite solar cells
KW - Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
UR - https://www.scopus.com/pages/publications/105009849147
U2 - 10.1016/j.jechem.2025.06.022
DO - 10.1016/j.jechem.2025.06.022
M3 - Article
AN - SCOPUS:105009849147
SN - 2095-4956
VL - 109
SP - 902
EP - 913
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
ER -
