Advances in New and Renewable Energy >
Study on the Fabrication of Perovskites Sensitized Solar Cells
Received date: 2015-09-07
Revised date: 2015-11-03
Online published: 2015-12-30
Perovskites sensitized solar cells have attracted great interest owing to the easy fabrication conditions, excellent absorption property, low energy consumption, and high power conversion efficiency (PCE). Herein, we successfully synthesized CH3NH3PbI3 via one-step method and fabricated perovskite sensitized solar cells by using P3HT as hole-transport material under ambient condition. Mesoporous TiO2 films with different thickness (i.e. 250 nm, 600 nm, and 1 000 nm) have been obtained by regulating the mole ratios of TiO2 pastes, terpineol, and ethyl cellulose. Furthermore, the influences of precursor volume on the microstructures and optical properties for the perovskite sensitized films were also systematically investigated. Results showed that when the thickness of the TiO2 mesoporous layer was ~600 nm, and the volume of perovskite precursor solutions was 40 μl, the perovskite layer with desirable grain sizes is covered sufficiently onto the TiO2 surface, and the pores between TiO2 nanoparticles were still remained, which favors the effective filling of hole-transport materials and is beneficial to the photo-generated hole transport in device. The optimized perovskite sensitized solar cells exhibited a PCE of 5.17%.
Key words： CH3NH3PbI3; solar cell; P3HT; fabrication process
WANG Nan , LIANG Zhu-rong , WANG Jun-xia , XU Xue-qing , YAN Zhuo-li , HE Yan-miao , ZHONG Xing-tao . Study on the Fabrication of Perovskites Sensitized Solar Cells[J]. Advances in New and Renewable Energy, 2015 , 3(6) : 429 -434 . DOI: 10.3969/j.issn.2095-560X.2015.06.004
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