Journal
NANO ENERGY
Volume 28, Issue -, Pages 330-337Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2016.08.048
Keywords
Perovskite solar cell; Air stability; Hydrophobic interlayer; Interfacial engineering
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Funding
- National Natural Science Foundation of China [61422404, 21442005]
- Central Basic Scientific Research in Colleges and Universities Operating Expenses
- State Key Laboratory of Optoelectronic Materials AMP
- Technologies (Sun Yatsen Unversity)
- Program for Innovative Research Team in University of Ministry of Education of China [IRT13R54]
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The recent rapid rise in power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) has attracted worldwide extensive attention. However, the PSC applications are limited by their poor stability due to perovskite degradation in moisture. We used a fullerene amine interlayer in planar PSCs to reduce the interface barrier between ETL and metal electrode and also resist the moisture. The utilization of fullerene amine interlayer allowed for the enhancement of PSCs' performance, showing a highest power conversion efficiency (PCE) > 17.2% with negligible hysteresis. More importantly, the air stability of PSCs with fullerene amine was improved: the unpackaged devices stored in air can keep their high performance with no obvious PCE loss in 10% humidity and > 90% of the initial PCE in 45% humidity after 20 days. (C) 2016 Published by Elsevier Ltd.
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