Project R-16895

Electroactive organic cations for chiral hybrid perovskites: combining efficient charge carrier transport with strong chiroptical activity (Research)

Combining the unique optical properties of chiral materials, such as the selective absorption or emission of circularly polarized light (CPL), with optoelectronics opens up the emerging domain of chiroptoelectronics. This field has strong long-term potential in technologies as varied as displays, imaging, computing, and water splitting for green hydrogen production. CPL detection is important for enhancing contrast in bioimaging, increasing data density in optical communication, and improving environmental monitoring. However, current CPL detection systems rely on conventional photodetectors combined with bulky optical components, limiting scalability, integration, and resolution. Chiral semiconductors offer a promising alternative by enabling CPL photodetectors (CPL-PDs) that do not require external optics. Yet their performance remains inadequate for real-world use due to limited chiroptical and electronic properties. The CONCePT project addresses this challenge by developing a new class of chiral hybrid perovskites (CHPs) containing electroactive chiral organic cations. By integrating the novel CHPs into CPL-PDs and benchmarking their performance, CONCePT bridges the gap between molecular design and device-level engineering. The project will also advance our understanding of chirality transfer at organic-inorganic interfaces. These insights will enable the development of high-performance chiroptoelectronic devices beyond CPL-PDs, such as CPL-sensitive synaptic transistors, spin-LEDs, and photoelectrochemical cells.

01 November 2026 - 31 October 2031