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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 57: Hybrid, Organic and Perovskite Optoelectronics and Photovoltaics VIII
CPP 57.3: Talk
Friday, March 13, 2026, 12:00–12:15, ZEU/LICH
Interface Engineering toward High-Performance Subphthalocyanine-based Single-Component Organic Photodetectors — •Anncharlott Kusber1, Ying Sun2, Jakob Wolanksy1,3, Fred Kretschmer1, Conrad Winkler1,3, Anna-Lena Hofmann1, Ji-Seon Kim2, Karl Leo1, and Johannes Benduhn1,3 — 1Institute of Applied Physics, Technische Universität, Dresden, Germany — 2Imperial College London, United Kingdom — 3German Centre of Astrophysics, Görlitz, Germany
Organic photodetectors (OPDs) have attracted considerable attention due to their capability to convert light into electrical signals and enable high-quality imaging, while simultaneously offering the intrinsic benefits of organic materials. Single-component (SC) OPDs, using a single photoactive organic semiconductor material, have several advantages over the commonly used bulk heterojunction OPDs such as its simplified structure. The influence of several organic electron transport layers (ETLs) on energetic landscape at the immediate interface with organic layers has not yet been systematically reported. This is necessary to gain a deeper understanding of physics of organic interfaces, thereby enabling the further optimization of OPD performance. Sensitive measurement techniques were used to analyse the influence of different organic interfaces on the OPD performance.
These investigations lead to SubNc SC OPD devices, which achieves an EQE of 56 % at 0 V, an ultra-low JD of 2.5 · 10−11 A·cm−2 at -0.5 V and D* of 3.8 · 1014 Jones at 0 V (based on calculated shot noise).
Keywords: Organic photodetector; Interface engineering; Single-component; SubNc; Device