Nanoscience and Nanoengineering(CEASE PUBLICATION) Vol. 5(3), pp. 25 - 30
DOI: 10.13189/nn.2017.050301
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Effects of CsI and/or SnBr₂ Additions to CH₃NH₃PbI₃ Perovskite Solar Cells

Naoki Ueoka , Takeo Oku ^*, Atsushi Suzuki
Department of Materials Science, the University of Shiga Prefecture, Japan

ABSTRACT

Perovskite-type CH₃NH₃(MA)PbI₃-based photovoltaic devices were fabricated and characterized. Effects of cesium iodide (CsI) and/or tin bromide (SnBr₂) additions on the photovoltaic properties and microstructures of the perovskite solar cells were investigated. The open-circuit voltage increased with CsI addition because of increase of the band gap energy. The short-circuit current densities and the external quantum efficiencies increased by CsI and SnBr₂ addition because of decrease of series resistance, which resulted in the improvement of photovoltaic performance of the perovskite solar cells. X-ray diffraction indicated the doped elements existed in the perovskite crystals. The cell prepared by a starting composition of MA_0.95Cs_0.05Pb_0.95Sn_0.05I_2.9Br_0.1 showed the best photovoltaic performance in the present work.

KEYWORDS
Perovskite Solar Cells, CsI, SnBr₂

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Naoki Ueoka , Takeo Oku , Atsushi Suzuki , "Effects of CsI and/or SnBr₂ Additions to CH₃NH₃PbI₃ Perovskite Solar Cells," Nanoscience and Nanoengineering(CEASE PUBLICATION), Vol. 5, No. 3, pp. 25 - 30, 2017. DOI: 10.13189/nn.2017.050301.

(b). APA Format:
Naoki Ueoka , Takeo Oku , Atsushi Suzuki (2017). Effects of CsI and/or SnBr₂ Additions to CH₃NH₃PbI₃ Perovskite Solar Cells. Nanoscience and Nanoengineering(CEASE PUBLICATION), 5(3), 25 - 30. DOI: 10.13189/nn.2017.050301.