What question did this study set out to answer?

The research aims to understand how trace humidity affects the performance of metal halide perovskite solar cells.

March 28, 2026Journal of Materials Chemistry A0 citationsOpen Access

An operando spectroscopic examination of the influence of trace humidity on interdigital back contact metal halide perovskite solar cells

MBMansour BayatIslamic Azad University, Science and Research Branch ENEdgar NandayapaHelmholtz-Zentrum Berlin für Materialien und Energie CTCarlo TiebeFederal Institute For Materials Research and Testing

Key Points

The research aims to understand how trace humidity affects the performance of metal halide perovskite solar cells.
Operando spectroscopic techniques employed to analyze effects of humidity
Back contact devices used for the solar cells
Humidity levels tested ranged from 5 to 35 ppm V.
Water migration was observed under trace humidity conditions
Outgassing and charge-carrier quenching occurred as humidity levels varied
Reversible changes in photocurrent responses were noted.

Abstract

In operando investigations of trace humidity effects (5–35 ppm V ) on metal halide perovskite solar cells using back contact devices are revealing water migration, outgassing, charge-carrier quenching, and reversible photocurrent responses.

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