Issue 39, 2016

Light stability tests of CH3NH3PbI3 perovskite solar cells using porous carbon counter electrodes

Abstract

The CH3NH3PbI3 perovskite solar cells have been fabricated using three-porous-layered electrodes as, 〈glass/F-doped tin oxide (FTO)/dense TiO2/porous TiO2-perovskite/porous ZrO2-perovskite/porous carbon-perovskite〉 for light stability tests. Without encapsulation in air, the CH3NH3PbI3 perovskite solar cells maintained 80% of photoenergy conversion efficiency from the initial value up to 100 h under light irradiation (AM 1.5, 100 mW cm−2). Considering the color variation of the CH3NH3PbI3 perovskite layer, the significant improvement of light stability is due to the moisture-blocking effect of the porous carbon back electrodes. The strong interaction between carbon and CH3NH3PbI3 perovskite was proposed by the measurements of X-ray photoelectron spectroscopy and X-ray diffraction of the porous carbon-perovskite layers.

Graphical abstract: Light stability tests of CH3NH3PbI3 perovskite solar cells using porous carbon counter electrodes

Article information

Article type
Paper
Submitted
18 May 2016
Accepted
01 Jul 2016
First published
01 Jul 2016

Phys. Chem. Chem. Phys., 2016,18, 27102-27108

Light stability tests of CH3NH3PbI3 perovskite solar cells using porous carbon counter electrodes

S. Ito, G. Mizuta, S. Kanaya, H. Kanda, T. Nishina, S. Nakashima, H. Fujisawa, M. Shimizu, Y. Haruyama and H. Nishino, Phys. Chem. Chem. Phys., 2016, 18, 27102 DOI: 10.1039/C6CP03388A

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