TY - JOUR
T1 - A universal ionic liquid solvent for non-halide lead sources in perovskite solar cells
AU - Chen, Yue
AU - Xu, Yamin
AU - Liu, Jin
AU - Lin, Yuexin
AU - Hu, Jianfei
AU - Cao, Chensi
AU - Xia, Yingdong
AU - Chen, Yonghua
N1 - Publisher Copyright:
© 2022 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
PY - 2022/8
Y1 - 2022/8
N2 - Replacing lead iodide (PbI2) with suitable non-halides lead source has been found to be an effective method to control crystallization and fabricate high-performance perovskite solar cells (PSCs). However, the solubility of non-halide lead sources is highly limited by traditional solvents due to the chemical interaction limitation. Here, we report a series of non-halide lead sources (e.g., lead acetate (PbAc2), lead sulfate (PbSO4), lead carbonate (PbCO3), lead nitrate (Pb(NO3)2), lead formate (Pb(HCOO)2) and lead oxalate (PbC2O4)) can be well dissolved in an ionic liquid solvent methylammonium acetate (MAAc). We found that the universal strong coordination of C[dbnd]O with lead ion (Pb2+) and the formation of hydrogen bonds were observed in perovskite precursor solution. This allows the dissolution of non-halide lead salts and is able to produce perovskite film with smooth, compact, and full coverage crystal grain. The power conversion efficiency (PCE) of 14.48%, 19.21%, and 20.13% in PSCs based on PbSO4, PbAc2, and PbCO3 was achieved, respectively, in the absence of any additives and passivation agents. This study demonstrates the universality of ionic liquid for the preparation of PSCs based on non-halides lead sources.
AB - Replacing lead iodide (PbI2) with suitable non-halides lead source has been found to be an effective method to control crystallization and fabricate high-performance perovskite solar cells (PSCs). However, the solubility of non-halide lead sources is highly limited by traditional solvents due to the chemical interaction limitation. Here, we report a series of non-halide lead sources (e.g., lead acetate (PbAc2), lead sulfate (PbSO4), lead carbonate (PbCO3), lead nitrate (Pb(NO3)2), lead formate (Pb(HCOO)2) and lead oxalate (PbC2O4)) can be well dissolved in an ionic liquid solvent methylammonium acetate (MAAc). We found that the universal strong coordination of C[dbnd]O with lead ion (Pb2+) and the formation of hydrogen bonds were observed in perovskite precursor solution. This allows the dissolution of non-halide lead salts and is able to produce perovskite film with smooth, compact, and full coverage crystal grain. The power conversion efficiency (PCE) of 14.48%, 19.21%, and 20.13% in PSCs based on PbSO4, PbAc2, and PbCO3 was achieved, respectively, in the absence of any additives and passivation agents. This study demonstrates the universality of ionic liquid for the preparation of PSCs based on non-halides lead sources.
KW - Efficiency
KW - Non-halide lead
KW - Perovskite solar cells
KW - Precursor components
KW - Universality
UR - http://www.scopus.com/inward/record.url?scp=85129180233&partnerID=8YFLogxK
U2 - 10.1016/j.jechem.2022.03.054
DO - 10.1016/j.jechem.2022.03.054
M3 - 文章
AN - SCOPUS:85129180233
SN - 2095-4956
VL - 71
SP - 445
EP - 451
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
ER -