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3 October 2022 Strain modulation of 2D perovskite thin film carrier dynamics
Daniel C. Ratchford, Vanessa M. Breslin, Tara J. Michael, Gloria Bazargan, Daniel Gunlycke, Paul A. Brown, Junghoon Yeom, Adam Dunkelberger, Jeffrey C. Owrutsky, Robert B. Balow, Blake S. Simpkins
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Proceedings Volume PC12209, Organic, Hybrid, and Perovskite Photovoltaics XXIII; PC122090G (2022) https://doi.org/10.1117/12.2632592
Event: SPIE Organic Photonics + Electronics, 2022, San Diego, California, United States
Abstract
2D perovskites have broad technological appeal because of their tunable mechanical, optical, and electrical properties. For flexible optoelectronic applications, it is necessary to determine how mechanical stresses affect their optoelectronic properties. We compare the impact of strain on the photoluminescence (PL) spectra and charge carrier recombination rates of two different 2D perovskite materials, synthesized using either phenethylammonium or butylammonium cations. Both perovskite materials exhibit strong PL enhancement, redshifts of the PL emission wavelength, and longer recombination lifetimes for compressive strains of ≲1%. These results are discussed in relation to the materials’ band structures and trap states.
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Daniel C. Ratchford, Vanessa M. Breslin, Tara J. Michael, Gloria Bazargan, Daniel Gunlycke, Paul A. Brown, Junghoon Yeom, Adam Dunkelberger, Jeffrey C. Owrutsky, Robert B. Balow, and Blake S. Simpkins "Strain modulation of 2D perovskite thin film carrier dynamics", Proc. SPIE PC12209, Organic, Hybrid, and Perovskite Photovoltaics XXIII, PC122090G (3 October 2022); https://doi.org/10.1117/12.2632592
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KEYWORDS
Perovskite
Carrier dynamics
Modulation
Thin films
Optoelectronics
Luminescence
Metals
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