Three-dimensional hybrid inorganic/organic optoelectronics based on GaN/oCVD-PEDOT structures

Tobias Voss

doi:10.1117/12.3000918

9 March 2024 Three-dimensional hybrid inorganic/organic optoelectronics based on GaN/oCVD-PEDOT structures

Tobias Voss

Proceedings Volume PC12886, Gallium Nitride Materials and Devices XIX; PC128860H (2024) https://doi.org/10.1117/12.3000918
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We report on 3D micro-LEDs consisting of a nitride-based core and a p-doped PEDOT polymer shell. The doped polymer shell is deposited from the gas phase using oxidative chemical vapor deposition (oCVD). oCVD can be directly integrated with state-of-the-art semiconductor processing technologies and allows for a gentle deposition from the gas phase at moderate vacuum conditions and temperatures below 150°C. We characterize the electrical properties of the hybrid organic/inorganic interface with temperature-dependent current-voltage measurements. Applying a Schottky model, we identify thermionic emission of electrons as the dominant conduction mechanism across the heterojunction and extract a mean barrier height of 1.4 eV with an ideality factors as low as 2.0 at room temperature indicating a low defect density at the interface. The results give a conclusive picture of the chances of oCVD-PEDOT/nitride heterojunctions for the use in 3D micro-LEDs.

Conference Presentation

Citation Download Citation

Tobias Voss "Three-dimensional hybrid inorganic/organic optoelectronics based on GaN/oCVD-PEDOT structures", Proc. SPIE PC12886, Gallium Nitride Materials and Devices XIX, PC128860H (9 March 2024); https://doi.org/10.1117/12.3000918

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