Polarization-tunable perovskite light-emitting metatransistor

• Main Authors: Klein, Maciej, Wang, Yutao, Tian, Jingyi, Ha, Son Tung, Paniagua-Domínguez, Ramón, Kuznetsov, Arseniy I, Adamo, Giorgio, Soci, Cesare
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2022
• Subjects: Science::Physics; Halide Perovskites; Perovskite Light-Emitting Transistor; Dielectric Metasurfaces; Metatransistor
• Online Access: https://hdl.handle.net/10356/162681
• Institution: Nanyang Technological University

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. This article is protected by copyright. All rights reserved.