Journal
NANOTECHNOLOGY
Volume 28, Issue 20, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa6707
Keywords
magnetron sputtering; Ni-doped CoOx; hole transport material; perovskite solar cell
Funding
- MOST [2014AA032802]
- Chinese Academy of Sciences [KFZD-SW-403]
- Science and Technology Commission of Shanghai Municipality (STCSM) [13NM1402200]
- Shanghai Municipal Natural Science Foundation [16ZR1441000]
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Ultrathin Ni doped CoOx films were prepared by direct current co-sputtering at room temperature as inorganic hole transport materials for inverted perovskite solar cells. P-type doping was designed to adjust the valence band position of CoOx to match the that of CH3NH3PbI3, which would effectively eliminate the interface barrier. Moreover, the hole extraction ability would be enhanced and the power conversion efficiency of the devices hence increased from 3.68% to 9.60%. The optimized performance was also accompanied by decent stability as a result of its intrinsic stability.
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