Organic photodetector charge blocking mechanism by numerical simulation

Zhao Ma; Christopher Kyle Renshaw

doi:10.1117/12.2619082

30 May 2022 Organic photodetector charge blocking mechanism by numerical simulation

Zhao Ma, Christopher Kyle Renshaw

Proceedings Volume PC12091, Image Sensing Technologies: Materials, Devices, Systems, and Applications IX; PC1209104 (2022) https://doi.org/10.1117/12.2619082
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Adding a charge blocking layer at the anode of organic photodiodes suppresses the current when forward biased. This simple structure can substitute thin film transistors as a switch when scaled into an array. However, the mechanism of the structure is still unknown. Meanwhile we observe a slow turn on when reverse biased, this indicates small and large signal injection dominated by different recombination mechanisms. Here, we developed a numerical model simulating this three-layer structure and compared against experimental data to describe the carrier dynamics and elucidate the physics dominant in this switchable photodiode.

Conference Presentation

Citation Download Citation

Zhao Ma and Christopher Kyle Renshaw "Organic photodetector charge blocking mechanism by numerical simulation", Proc. SPIE PC12091, Image Sensing Technologies: Materials, Devices, Systems, and Applications IX, PC1209104 (30 May 2022); https://doi.org/10.1117/12.2619082

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