Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 28, Pages 14881-14886Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta03315j
Keywords
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Funding
- National Natural Science Foundation of China [NSFC 51622201, 61571015, 91433102, 11404009, 51404293]
- National 973 projects, MOST from the Ministry of Science and Technology, China [2013CB932602]
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The instability of hybrid organic-inorganic perovskite solar cells hinders their commercialization and further applications although they have reached high power conversion efficiency. Here we introduce a double-layer hole transport material into perovskite solar cells containing a CuSCN layer and spiro-OMeTAD layer simultaneously. Consequently, the long-term stability of the solar cells was significantly enhanced compared to those of single-layer devices and the devices can sustain about 90% of their initial power conversion efficiency after 10 hours of continuous working at the maximum power point. We ascribed the long-term stability enhancement to the suppression of methylamine migration by the CuSCN layer.
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