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30 September 2024 Optical excitations and growth of layered organic metal halide semiconductors
Michael L. Chabinyc
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Proceedings Volume PC13127, Physical Chemistry of Semiconductor Materials and Interfaces XXIII; PC1312709 (2024) https://doi.org/10.1117/12.3027755
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
Hybrid organic metal halides are solution-processable semiconductors that have unusually good electronic properties for materials deposited at low temperatures. Organic metal halides can be used to form solar cells and have potential as light emitting diodes. Because these materials combine organic and inorganic bonding, there is significant coupling between electronic excitations and the lattice. Towards understanding this relationship, we will present our work investigating the optoelectronic properties of layered organic metal halide systems and the relationship to structure and growth conditions. We will discuss the nature of optical excitations in layered organic metal halide compounds. These systems show formation of self-trapped excitons that can be interpreted as occurring through optical frequency magnetic dipole transitions. We will then discuss how mechanical strain during growth influences photoluminescence. We find evidence that broad emission can be strongly impacted by strain in model systems. Our results suggest that broad emission of layered organic metal halides can be tuned in thin films providing a route towards controlling LEDs.
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Michael L. Chabinyc "Optical excitations and growth of layered organic metal halide semiconductors", Proc. SPIE PC13127, Physical Chemistry of Semiconductor Materials and Interfaces XXIII, PC1312709 (30 September 2024); https://doi.org/10.1117/12.3027755
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KEYWORDS
Metals
Semiconductors
Light emitting diodes
Thin films
Optoelectronics
Photoluminescence
Scatter measurement
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