Photosensitivity and Carrier Densities of Perovskite Solar Absorbers DOI Creative Commons
Małgorzata Kot, Katarzyna Gawlińska‐Nęcek, Emilia Pożarowska

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Dark and light current–voltage characteristics of perovskite solar absorbers are analyzed in terms their carrier densities. The analysis reveals p‐type large polarons as a dominant type the investigated cells. mechanism causing photosensitivity is attributed to dissociation (and pairing) bipolarons vice versa) that controlled by internal potential Γ. As an example, polaron concept tested for formamidinium lead triiodide cell. individual steps data demonstrated determine ionicity factor this film, quantify density polarons, predict gain loss photo‐induced carriers. It deduced reversible light‐on/off operation can only occur when bias voltage never exceeds critical value potential. results gained study suggest novel be successively applied on different hybrid materials, too.

Language: Английский

Photosensitivity and Carrier Densities of Perovskite Solar Absorbers DOI Creative Commons
Małgorzata Kot, Katarzyna Gawlińska‐Nęcek, Emilia Pożarowska

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Abstract Dark and light current–voltage characteristics of perovskite solar absorbers are analyzed in terms their carrier densities. The analysis reveals p‐type large polarons as a dominant type the investigated cells. mechanism causing photosensitivity is attributed to dissociation (and pairing) bipolarons vice versa) that controlled by internal potential Γ. As an example, polaron concept tested for formamidinium lead triiodide cell. individual steps data demonstrated determine ionicity factor this film, quantify density polarons, predict gain loss photo‐induced carriers. It deduced reversible light‐on/off operation can only occur when bias voltage never exceeds critical value potential. results gained study suggest novel be successively applied on different hybrid materials, too.

Language: Английский

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