Organic semiconductors provide a versatile platform for chiral optoelectronics because their optical transitions, excitonic interactions, molecular packing and device operation can all be modified through chemical and processing design. However, many of the most useful organic semiconductors for photodetectors and light-emitting devices are not intrinsically chiral. A central question is therefore how chirality can be introduced into functional organic semiconductors without sacrificing the electronic properties that make them attractive for optoelectronic applications.

In this talk, I will first discuss chirality induction as a general strategy for creating chiroptically active organic semiconductor systems[1]. Rather than relying only on the synthesis of intrinsically chiral chromophores, chiral order can be transferred into functional semiconductor materials through chiral additives, chiral environments, host–guest interactions and controlled thin-film assembly.[2] These approaches allow achiral or weakly chiral organic semiconductors to acquire pronounced circular dichroism, circularly polarized luminescence responses. Importantly, the induced chiroptical activity is not simply a molecular property, but often emerges from collective electronic coupling, excitonic interactions and supramolecular organization in the solid state. This provides a flexible route to incorporate chirality into established organic photodetector and light-emitting diodes .

I will then focus on a more specific consequence of induced electronic chirality: the emergence of chiral orbital texture in organic semiconductor devices. In electrically driven chiral organic films, charge transport can generate orbital polarization when the electronic orbital character is locked to the carrier momentum.[3] This orbital–momentum locking creates a handed electronic texture that is absent in conventional descriptions of molecular circularly polarized luminescence. As a result, the handedness of circularly polarized electroluminescence can become dependent on both the direction of light emission and the direction of current flow, leading to non-reciprocal chiral emission behaviour and unusually large device-level circular polarization.

By connecting chirality induction in functional semiconductor materials with orbital-texture-driven emission in working devices, I will discuss how chiral optoelectronic responses can emerge across different levels of organic semiconductor systems. Rather than being determined solely by molecular stereochemistry, circular polarization in these materials can be shaped by electronic structure, excited-state interactions, thin-film organization and device operation. This perspective opens new opportunities for circularly polarized OLEDs, chiral photodetectors and other optoelectronic devices where handedness can be generated, amplified and controlled in soft semiconductor materials.