Voltage-Dependent Photoluminescence and How It Correlates with the Fill Factor and Open-Circuit Voltage in Perovskite Solar Cells

Stolterfoht M, Le Corre VM, Feuerstein M, Caprioglio P, Koster LJA, Neher D (2019)

Publication Status: Published

Publication Type: Journal article

Publication year: 2019

Journal

ACS Energy Letters American Chemical Society

Publisher: AMER CHEMICAL SOC

Book Volume: 4

Pages Range: 2887-2892

Journal Issue: 12

DOI: 10.1021/acsenergylett.9b02262

Abstract

Optimizing the photoluminescence (PL) yield of a solar cell has long been recognized as a key principle to maximize the power conversion efficiency. While PL measurements are routinely applied to perovskite films and solar cells under open circuit conditions (V-OC), it remains unclear how the emission depends on the applied voltage. Here, we performed PL(V) measurements on perovskite cells with different hole transport layer thicknesses and doping concentrations, resulting in remarkably different fill factors (FFs). The results reveal that PL(V) mirrors the current-voltage (JV) characteristics in the power-generating regime, which highlights an interesting correlation between radiative and nonradiative recombination losses. In particular, high FF devices show a rapid quenching of PL(V) from open-circuit to the maximum power point. We conclude that, while the PL has to be maximized at V-OC at lower biases < V-OC the PL must be rapidly quenched as charges need to be extracted prior to recombination.

Authors with CRIS profile

Vincent Marc Le Corre Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

University of Groningen / Rijksuniversiteit Groningen NL Netherlands (NL) Universität Potsdam DE Germany (DE)

How to cite

APA:

Stolterfoht, M., Le Corre, V.M., Feuerstein, M., Caprioglio, P., Koster, L.J.A., & Neher, D. (2019). Voltage-Dependent Photoluminescence and How It Correlates with the Fill Factor and Open-Circuit Voltage in Perovskite Solar Cells. ACS Energy Letters, 4(12), 2887-2892. https://doi.org/10.1021/acsenergylett.9b02262

MLA:

Stolterfoht, Martin, et al. "Voltage-Dependent Photoluminescence and How It Correlates with the Fill Factor and Open-Circuit Voltage in Perovskite Solar Cells." ACS Energy Letters 4.12 (2019): 2887-2892.

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