期刊
SOLAR ENERGY
卷 144, 期 -, 页码 158-165出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2017.01.019
关键词
Perovskite; NiO; Carbon nanotubes; Charge transfer
资金
- National Basic Research Program [2014CB643506, 2013CB922104]
- China Scholarship Council [201506165038]
- National Natural Science Foundation of China [21673091, 5161101140]
- Natural Science Foundation of Hubei Province [ZRZ2015000203]
- Technology Creative Project of Excellent Middle & Young Team of Hubei Province [T201511]
- Wuhan National High Magnetic Field Center [2015KF18]
- Director Fund of the WNLO
In this research work, for the first time, we introduced thin composite films (similar to 4.8 gm) made with NiO nanoparticles and single-walled carbon nanotubes (SWCNT) as alternatives to replace the commonly used carbon black/graphite counter electrode in full printable organic hole-transport layer free meso-porous perovskite solar cells. Due to the relative thick carbon black/graphite counter electrodes, which are typically 10 mu m thick, charge collection and batch to batch reproducibility of this type devices are significantly limited. We find an appreciated power conversion efficiency of 12.7% can be achieved for the CH3NH3PbI3 perovskite solar cell using mesoscopic TiO2/Al2O3 framework structure in combination with a thin NiO/SWCNT counter electrode under standard reporting conditions. Electronic impedance spectroscopy measurements reveal efficient charge collection ability for perovskite devices using thin NiO/SWCNT counter electrodes compared to the conventional carbon black/graphite counter electrode, and thus can efficiently deliver photocurrent. (C) 2017 Elsevier Ltd. All rights reserved.
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