期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 13, 页码 8520-8526出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b00846
关键词
planar perovskite solar cells; composite; electron transport layer; interface; electron extraction
资金
- Hong Kong Polytechnic University [G-UC69, G-UC71]
- National Natural Science Foundation of China [51204214]
An electron transport layer is essential for effective operation of planar perovskite solar cells. In this Article, PW12-TiO2 composite was used as the electron transport layer for the planar perovskite solar cell in the device structure of fluorine-doped tin oxide (FTO)-glass/PW12- TiO2/perovskite/spiro-OMeTAD/Au. A proper downward shift of the conduction band minimum (CBM) enhanced electron extraction from the perovskite layer to the PW12- TiO2 composite layer. Consequently, the common hysteresis effect in TiO2-based planar perovskite solar cells was significantly reduced and the open circuit voltage was greatly increased to about 1.1 V. Perovskite solar cells using the PW12-TiO2 compact layer showed an efficiency of 15.45%. This layer and interface engineering for the further development of perovskite solar cells. work can contribute to the studies on the electron transport layer and interface engineering for the further development of perovskite solar cells.
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