Building process design rules for microstructure control in wide-bandgap mixed halide perovskite solar cells by a high-throughput approach

Akhundova F, Lüer L, Osvet A, Hauch J, Peters IM, Forberich K, Li N, Brabec C (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 118

Pages Range: 1ENG-

Article Number: 243903

Journal Issue: 24

DOI: 10.1063/5.0049010

Abstract

Wide bandgap mixed halide perovskites ABX3, in which X can be I, Br, or Cl, are promising materials to form highly efficient optoelectronic devices, because the optical bandgap can be controlled over a wide range by variation of the halogen composition. However, significant nonradiative losses must be overcome to approach the efficiency limit of single-junction solar cells. Here, we present a high throughput-based investigation of the influence of processing parameters on nonradiative losses in the perovskite bulk. We perform antisolvent crystallization during spin coating and vary the solvent type, its volume, and the temperature of the subsequent annealing step. We use the photoluminescence quantum yield (PLQY) as a proxy to the presence of nonradiative losses and PL spectra as a qualitative probe for sample morphology. Using Gaussian process regression, we find that we can reliably predict PLQY from the PL spectral shape. This means that the PL spectral shape conveys the essential photophysics controlling PL quenching and thus nonradiative charge recombination. In comparison with scanning electron micrographs and x-ray diffraction data, we find that nonradiative losses in polycrystalline perovskite films are caused by increased domain size dispersion. Our method provides a simple and fast structure-sensitive in-line probe for fast morphology optimization in a high-throughput fashion.

Authors with CRIS profile

Larry Lüer Institute Materials for Electronics and Energy Technology (i-MEET) Andres Osvet Institute Materials for Electronics and Energy Technology (i-MEET) Jens Hauch Institute Materials for Electronics and Energy Technology (i-MEET) Karen Forberich Institute Materials for Electronics and Energy Technology (i-MEET) Ning Li Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Additional Organisation(s)

Graduiertenkolleg 2495 Energiekonvertierungssysteme: von Materialien zu Bauteilen (Energy Conversion Systems: From Materials to Devices)

Related research project(s)

Integration eines Ladungsträgerlebensdauermessgeräts in eine R2R-Produktionsanlage zur Inline-Qualitätskontrolle für gedruckte Halbleiter (PIASOL) Photoinduzierte Ladungsträgerdynamik als Qualitätskriterium in der Halbleiterproduktion Nov. 1, 2019 - Oct. 31, 2021 Laboranalyse von Degradationsmechanismen unter beschleunigter Alterung und Entwicklung geeigneter feldtauglicher bildgebender Detektionsverfahren und Entwicklung und Evaluation eines Algorithmus zur Fehlerdetektion und Prognostizierung der Ausfallwahrscheinlichkeit (iPV4.0) Laboranalyse von Degradationsmechanismen unter beschleunigter Alterung und Entwicklung geeigneter feldtauglicher bildgebender Detektionsverfahren und Entwicklung und Evaluation eines Algorithmus zur Fehlerdetektion und Prognostizierung der Ausfallwahrscheinlichkeit (iPV4.0) Aug. 1, 2018 - July 31, 2021

Involved external institutions

Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien (HI-ERN) DE Germany (DE)

How to cite

APA:

Akhundova, F., Lüer, L., Osvet, A., Hauch, J., Peters, I.M., Forberich, K.,... Brabec, C. (2021). Building process design rules for microstructure control in wide-bandgap mixed halide perovskite solar cells by a high-throughput approach. Applied Physics Letters, 118(24), 1ENG-. https://dx.doi.org/10.1063/5.0049010

MLA:

Akhundova, Fatima, et al. "Building process design rules for microstructure control in wide-bandgap mixed halide perovskite solar cells by a high-throughput approach." Applied Physics Letters 118.24 (2021): 1ENG-.

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