TY - JOUR
T1 - Small Molecule-Induced Modulation of Grain Crystallization and Ion Migration Leads to High-Performance MAPbI3Mini-Modules
AU - Ma, Shaoyang
AU - Ma, Binghe
AU - Luo, Jian
AU - Zhang, Xingxu
AU - Zhang, Nan
AU - Fan, Guofang
AU - Ramakrishna, Seeram
AU - Ye, Tao
N1 - Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/8/22
Y1 - 2022/8/22
N2 - Perovskites have become a promising light-absorbing material for the fabrication of high-performance solar cells. But, the relatively low film quality of perovskites hinders the fabrication of large-area perovskite solar modules and long-period stability, which further slows down their industrial-scale commercialization. Here, we propose an N,N′-methylenebis(acrylamide) (MBAA) addition strategy for modulating grain crystallization and ion migration within methylammonium lead halide (MAPbI3), resulting in enhanced power conversion efficiency (PCE) and stability of MAPbI3-based solar modules. MBAA can help to form larger perovskite grains with less defects due to strong coordination interactions between the Pb atoms in MAPbI3and the -NH and -CO functional groups in MBAA. We further found that MBAA was located at the surface of perovskite grains, which would block the ion migration (MA+/I-) and the H2O/O2infusion from the ambient-air environment, resulting in enhancements of the PCE and stability of the MAPbI3devices. The mini-module with an active area of 20 cm2exhibits a record PCE of 18.58%. The MBAA-based solar module shows excellent damp heat and operational stabilities and maintains ∼82% and ∼90% of its initial PCE after 1000 h under 85 °C/85% relative humidity and 1000 h working at the maximum power point.
AB - Perovskites have become a promising light-absorbing material for the fabrication of high-performance solar cells. But, the relatively low film quality of perovskites hinders the fabrication of large-area perovskite solar modules and long-period stability, which further slows down their industrial-scale commercialization. Here, we propose an N,N′-methylenebis(acrylamide) (MBAA) addition strategy for modulating grain crystallization and ion migration within methylammonium lead halide (MAPbI3), resulting in enhanced power conversion efficiency (PCE) and stability of MAPbI3-based solar modules. MBAA can help to form larger perovskite grains with less defects due to strong coordination interactions between the Pb atoms in MAPbI3and the -NH and -CO functional groups in MBAA. We further found that MBAA was located at the surface of perovskite grains, which would block the ion migration (MA+/I-) and the H2O/O2infusion from the ambient-air environment, resulting in enhancements of the PCE and stability of the MAPbI3devices. The mini-module with an active area of 20 cm2exhibits a record PCE of 18.58%. The MBAA-based solar module shows excellent damp heat and operational stabilities and maintains ∼82% and ∼90% of its initial PCE after 1000 h under 85 °C/85% relative humidity and 1000 h working at the maximum power point.
KW - additive engineering
KW - grain crystallization
KW - ion migration
KW - perovskite solar module
UR - http://www.scopus.com/inward/record.url?scp=85135957656&partnerID=8YFLogxK
U2 - 10.1021/acsaem.2c01036
DO - 10.1021/acsaem.2c01036
M3 - 文章
AN - SCOPUS:85135957656
SN - 2574-0962
VL - 5
SP - 9471
EP - 9478
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 8
ER -