The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells

Martin Stolterfoht; Pietro Caprioglio; Christian M. Wolff; J.A. Marquez; Joleik Nordmann; Shanshan Zhang; Daniel Rothhardt; Ulrich Hörmann; Yohai Amir; Alex Redinger; Lukas Kegelmann; Fengshuo Zu; Steve Albrecht; Norbert Koch; Thomas Kirchartz; Michael Saliba; Thomas Unold; Dieter Neher

doi:10.1039/c9ee02020a

Key Points

To quantify bulk and interfacial recombination losses and assess how energetic alignment impacts the internal and external open-circuit voltage of perovskite solar cells.
Quantified carrier recombination losses occurring within bulk perovskite absorber layers and across device interfaces.
Evaluated varying perovskite material compositions paired with commonly used charge transport layers.
Bulk and interfacial recombination both induce substantial open-circuit voltage deficits governed by absorber layer composition.
Energetic alignment at the charge transport layer interfaces directly influences internal carrier dynamics and external operating voltage output.

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Implication

Experimental characterization reveals bulk and interfacial recombination losses across perovskite compositions and transport layers, highlighting key mechanisms limiting open-circuit voltage.

Abstract

We quantify recombination losses in the bulk and interfaces for different perovskite compositions and popular charge transport layers.

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Stolterfoht et al. (2019) studied this question.

synapsesocial.com/papers/69d6b058c2431583c1ab3157 https://doi.org/10.1039/c9ee02020a

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The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells

Key Points

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Cite This Study

The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells

Key Points

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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