Issue 11, 2018

Blue and red wavelength resolved impedance response of efficient perovskite solar cells

Abstract

The identification of recombination centers in perovskite solar cells is highly challenging. Here, we demonstrate the red and blue excitation wavelength resolved impedance response in state-of-the-art perovskite solar cells (PSCs) providing insights into charge recombination and ion accumulation. To get insight into the interfacial electronic characteristics, we fabricated PSCs with a planar architecture containing state-of-the-art triple-cation perovskite materials as absorber layers. The capacitance–frequency response under various blue and red illumination conditions were used to investigate interfacial charge accumulations and found that under high energy photons irradiation maximum charge or ion accumulations at interface (ETL/perovskite) take place. Ideality factor of PSCs was also calculated from the obtained value of high frequency resistance equaling 2.1 and 1.8 for devices measured under blue and red excitation wavelength, respectively. Our study illustrates that EIS measurements at different excitation wavelengths, reveals information about charge or ion accumulation and also provides a tool to diagnose PSCs in a more localized way.

Graphical abstract: Blue and red wavelength resolved impedance response of efficient perovskite solar cells

Supplementary files

Article information

Article type
Communication
Submitted
15 jun 2018
Accepted
05 ago 2018
First published
06 ago 2018

Sustainable Energy Fuels, 2018,2, 2407-2411

Blue and red wavelength resolved impedance response of efficient perovskite solar cells

D. Prochowicz, M. M. Tavakoli, S. Turren-Cruz, K. Pandey, M. Saliba and P. Yadav, Sustainable Energy Fuels, 2018, 2, 2407 DOI: 10.1039/C8SE00280K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements