Polarization-Tunable Perovskite Light-Emitting Metatransistor

TL;DR

This paper introduces a novel monolithic perovskite light-emitting transistor with integrated dielectric metasurfaces, enabling dynamic polarization control and significantly enhanced electroluminescence, advancing flat optics for immersive visual tech.

Contribution

It presents the first integration of dielectric metasurfaces into perovskite transistors, achieving polarization tunability and increased light emission in a compact device.

Findings

8-fold increase in electroluminescence intensity

Dynamic polarization tunability demonstrated

Potential for advanced light management strategies

Abstract

Emerging immersive visual communication technologies require light sources with complex functionality for dynamic control of polarization, directivity, wavefront, spectrum, and intensity of light. Currently, this is mostly achieved by free space bulk optic elements, limiting the adoption of these technologies. Flat optics based on artificially structured metasurfaces that operate at the sub-wavelength scale are a viable solution, however their integration into electrically driven devices remains challenging. Here we demonstrate a radically new approach of monolithic integration of a dielectric metasurface into a perovskite light-emitting transistor. We show that nanogratings directly structured on top of the transistor channel yield an 8-fold increase of electroluminescence intensity and dynamic tunability of polarization. This new light-emitting metatransistor device concept opens unlimited opportunities for light management strategies based on metasurface design and integration.