期刊
ACS ENERGY LETTERS
卷 4, 期 8, 页码 1845-1851出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.9b00953
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资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2017R1A2B3010927]
- Technology Development Program to Solve Climate Changes [2018M1A2A2058207]
- Global Frontier R&D Program on the Center for Multiscale Energy System [2012M3A6A7054855, 2012M3A6A7054856]
- Basic Science Research Program through the National Research Foundation of Korea [2018R1A2B2006708]
- Ministry of Education [2018R1D1A1B07050694]
- National Research Foundation of Korea [2018R1A2B2006708, 2012M3A6A7054855] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Recently, scalable perovskite fabrication techniques for large, uniform, and highly crystalline perovskite layers have been developed by controlling the crystal chemistry of perovskite precursors. However, scalable techniques for the electron and hole transport layers (ETL and HTL) have rarely been investigated. A major challenge in a scalable technique is obtaining a uniform, highly crystalline, and ultrathin ETL at a low temperature. Here, large-area SnO2 ETLs are fabricated by an electrostatic self-assembly method. The ETLs coated onto haze FTO show high uniformity without pin holes, as confirmed by an electroluminescence image of the perovskite solar module (PSM). In addition, the uniform and pinhole-free SnO2 coating are indirectly verified by observing the unchanged shunt resistance of the PSC with increasing active area, compared to the conventional SnO2 ETL-based PSC. On the basis of this self-assembly method, PSMs of areas 25 and 100 cm(2) are fabricated with power conversion efficiencies (PCEs) of 15.3 and 14.0% without shunt resistance loss, respectively.
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