CH3NH3SnxPb(1-x)I3 Perovskite Solar Cells Covering up to 1060 nm

Yuhei Ogomi; Atsushi Morita; Syota Tsukamoto; Takahiro Saitho; Naotaka Fujikawa; Qing Shen; Taro Toyoda; Kenji Yoshino; Shyam S Pandey; Tingli Ma; Shuzi Hayase

doi:10.1021/jz5002117

CH3NH3SnxPb(1-x)I3 Perovskite Solar Cells Covering up to 1060 nm

J Phys Chem Lett. 2014 Mar 20;5(6):1004-11. doi: 10.1021/jz5002117. Epub 2014 Mar 6.

Authors

Yuhei Ogomi¹, Atsushi Morita¹, Syota Tsukamoto¹, Takahiro Saitho¹, Naotaka Fujikawa¹, Qing Shen^{2

3}, Taro Toyoda^{2

3}, Kenji Yoshino^{4

3}, Shyam S Pandey¹, Tingli Ma¹, Shuzi Hayase^{1

3}

Affiliations

¹ †Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196, Japan.
² ‡Graduate School of Informatics and Engineering, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan.
³ ∥CREST, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan.
⁴ §Department of Electrical and Electronic Engineering, University of Miyazaki, 1-1, Gakuen Kibanadai Nishi, Miyazaki 889-2192, Japan.

PMID: 26270980
DOI: 10.1021/jz5002117

Abstract

We report photovoltaic performances of all-solid state Sn/Pb halide-based perovskite solar cells. The cell has the following composition: F-doped SnO2 layered glass/compact titania layer/porous titania layer/CH3NH3SnxPb(1-x)I3/regioregular poly(3-hexylthiophene-2,5-diyl). Sn halide perovskite itself did not show photovoltaic properties. Photovoltaic properties were observed when PbI2 was added in SnI2. The best performance was obtained by using CH3NH3Sn0.5Pb0.5I3 perovskite. 4.18% efficiency with open circuit voltage 0.42 V, fill factor 0.50, and short circuit current 20.04 mA/cm(2) are reported. The edge of the incident photon to current efficiency curve reached 1060 nm, which was 260 nm red-shifted compared with that of CH3NH3PbI3 perovskite solar cells.

Keywords: P3HT; near-infrared; perovskite; solar cells; tin halide.