Dresden 2026 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Hybrid, Organic and Perovskite Optoelectronics and Photovoltaics III

CPP 37.3: Talk

Wednesday, March 11, 2026, 15:45–16:00, ZEU/LICH

Nanoscale Dry-Processed Phosphorescent Films for Programmable Photonic Applications — •Yana Bui Thi, Sebastian Schellhammer, and Sebastian Reineke — Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute of Applied Physics, Technische Universität Dresden

Room-temperature phosphorescence (RTP) of organic materials provides a versatile basis for applications in environmental detection, security features, and optical data storage. Many of these concepts, including programmable luminescent tags (PLTs) [1], rely on precise control of triplet states, which poses certain challenges in terms of stability and processing. While polymer matrices are commonly used to suppress non-radiative decay, their processing limitations have restricted the miniaturization and control of devices. Here, we introduce ultrathin RTP tags that are produced entirely solvent-free and use organic materials as active layer. These nm-sized stacks exhibit higher efficiency and can be more than twenty times thinner than polymer-based structures. We characterize the resulting activation dynamics, stability, and reusability and discuss how the processing enables improved uniformity and the possible integration with structuring techniques. These results demonstrate a path toward compact, low-energy, and precisely controllable luminescent tags for future photonic technologies.

[1] Gmelch et.al. High-Speed and Continuous-Wave Programmable Luminescent Tags Based on Exclusive Room Temperature Phosphorescence (RTP). Adv Sci. 2021 (23):e2102104.

Keywords: Organic Semiconductor; Sensing; Optical Memory; Photonics; Phosphorescence