期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 33, 页码 27832-27838出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b05078
关键词
perovskite solar cells; additives; slot-die; one-step processing; reproducibility
资金
- National Research Foundation of Korea (NRF) grant - Korea Government [NRF-2015R1A2A1A10054466]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) of the Republic of Korea [20163030013900]
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20163030013900]
- GRI (GIST Research Institute) Project through GIST
Despite the potential of roll-to-roll processing for the fabrication of perovskite films, the realization of highly efficient and reproducible perovskite solar cells (PeSCs) through continuous coating techniques and low-temperature processing is still challenging. Here, we demonstrate that efficient and reliable CH3NH3PbI3 (MAPbI(3)) films fabricated by a printing process can be achieved through synergetic effects of binary processing additives, N-cyclohexyl-2-pyrrolidone (CHP) and dimethyl sulfoxide (DMSO). Notably, these perovskite films are deposited from premixed perovskite solutions for facile one-step processing under a room-temperature and ambient atmosphere. The CHP molecules result in the uniform and homogeneous perovskite films even in the one-step slot-die system, which originate from the high boiling point and low vapor pressure of CHP. Meanwhile, the DMSO molecules facilitate the growth of perovskite grains by forming intermediate states with the perovskite precursor molecules. Consequently, fully printed PeSC based on the binary additive system exhibits a high PCE of 12.56% with a high reproducibility.
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