TY - JOUR
T1 - 1,8-Octanediamine Dihydroiodide-Mediated Grain Boundary and Interface Passivation in Two-Step-Processed Perovskite Solar Cells
AU - Liu, Heng
AU - Qi, Xingnan
AU - Wang, Jiantao
AU - Zhang, Weihai
AU - Xia, Yu
AU - Shi, Yueqing
AU - Chen, Rui
AU - Wang, Hsing Lin
N1 - Generated from Scopus record by KAUST IRTS on 2023-10-23
PY - 2022/4/1
Y1 - 2022/4/1
N2 - Two-step-processed perovskite solar cells show superior reproducibility in terms of stepwise crystallization management. However, the device performance is limited due to the buried-interface defects that are highly dependent on the diffusion process of organic salts into PbI2. Herein, 1,8-octanediamine dihydroiodide (ODADI) is adopted to develop an alkylammonium predeposition strategy for the high-quality perovskite film. It is found that the pre-deposited ODADI layer not only facilitates the diffusion of organic salts via interaction with PbI2, but also passivates the buried-interface defects, resulting in a perovskite film with low defect density, high crystallinity, and superior electronic properties. Consequently, the fabricated devices deliver a significant enhancement on power conversion efficiency (PCE) from 19.87 to 22.07%. In addition, a superior long-term stability in glovebox atmosphere, maintaining 96% of the initial PCE after 1000 h, is demonstrated.
AB - Two-step-processed perovskite solar cells show superior reproducibility in terms of stepwise crystallization management. However, the device performance is limited due to the buried-interface defects that are highly dependent on the diffusion process of organic salts into PbI2. Herein, 1,8-octanediamine dihydroiodide (ODADI) is adopted to develop an alkylammonium predeposition strategy for the high-quality perovskite film. It is found that the pre-deposited ODADI layer not only facilitates the diffusion of organic salts via interaction with PbI2, but also passivates the buried-interface defects, resulting in a perovskite film with low defect density, high crystallinity, and superior electronic properties. Consequently, the fabricated devices deliver a significant enhancement on power conversion efficiency (PCE) from 19.87 to 22.07%. In addition, a superior long-term stability in glovebox atmosphere, maintaining 96% of the initial PCE after 1000 h, is demonstrated.
UR - https://onlinelibrary.wiley.com/doi/10.1002/solr.202100960
UR - http://www.scopus.com/inward/record.url?scp=85122850869&partnerID=8YFLogxK
U2 - 10.1002/solr.202100960
DO - 10.1002/solr.202100960
M3 - Article
SN - 2367-198X
VL - 6
JO - Solar RRL
JF - Solar RRL
IS - 4
ER -