Issue 32, 2016

Rejuvenation of perovskite solar cells

Abstract

A novel method has been developed to recharge and rejuvenate perovskite solar cells by immersing the device into methyl ammonium iodide (MAI) solution and heating at 70 °C for 40 s. We demonstrated that Au electrodes are more robust than Al and Ag electrodes for ZnO planar structures rather than ZnO and TiO2 nanoparticles (NPs). In addition to this, the degradation mechanism of the device has been discussed. The scanning electron microscopy (SEM) images and X-ray diffraction (XRD) spectroscopy are evidence that the perovskite crystals have been regenerated after degradation (60 days) with the help of MAI as a rejuvenating agent. After long-term aging tests with rejuvenation in 185 days, its PCE value is still around 11% compared to the original one of 11.6%.

Graphical abstract: Rejuvenation of perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
04 Jun 2016
Accepted
15 Jul 2016
First published
27 Jul 2016

J. Mater. Chem. C, 2016,4, 7595-7600

Rejuvenation of perovskite solar cells

Y. Huang, G. Gollavelli, Y. Chao and C. Hsu, J. Mater. Chem. C, 2016, 4, 7595 DOI: 10.1039/C6TC02307J

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