Using and measuring excitons for novel organic optoelectronic technologies

Katelyn P. Goetz; Adam J. Biacchi; Chad D. Cruz; Sebastian Engmann; Curt A. Richter; Chad R. Snyder; Emily G. Bittle

doi:10.1117/12.3022538

19 June 2024 Using and measuring excitons for novel organic optoelectronic technologies

Katelyn P. Goetz, Adam J. Biacchi, Chad D. Cruz, Sebastian Engmann, Curt A. Richter, Chad R. Snyder, Emily G. Bittle

Proceedings Volume PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV; PC1301308 (2024) https://doi.org/10.1117/12.3022538
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

The use of singlet fission to enhance device efficiency or enable new capabilities raises the need to investigate it on a slow operational timescale. Using a transistor-based measurement to examine temperature-dependent singlet fission in tetracene single crystals, we observe that it is activated to 210 K, at which point it undergoes an optoelectronic phase transition. We compare these results to those of pentacene and suggest that the phase change is due to a change in the singlet fission kinetics. We further examine the interplay between this readout and other extrinsic and intrinsic device properties, such as disorder and trap states. Our results give insight not only into the readout mechanism of this OFET-based measurement, but also strategies to manipulate and tune the response.

Conference Presentation

Citation Download Citation

Katelyn P. Goetz, Adam J. Biacchi, Chad D. Cruz, Sebastian Engmann, Curt A. Richter, Chad R. Snyder, and Emily G. Bittle "Using and measuring excitons for novel organic optoelectronic technologies", Proc. SPIE PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV, PC1301308 (19 June 2024); https://doi.org/10.1117/12.3022538

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