A Multi-Functional Full-Polarized Light Emitting and Controlling Device

Nanomaterials emitting polarized light directly without using the traditional polarizers are believed to simplify the design of polarization optics and afford higher efficiency, showing great potential in practical applications such as 3D display, hologram, anti-counterfeiting and light communication. While most efforts are focused on improving the polarized light emission performance of specific nanomaterials, of paramount importance is to interface these excellent materials with state-of-the-art industrial technology to make functional devices. Herein, we propose and demonstrate an efficient route to fabricate full-polarized emitting and controlling devices via integrating 3D printing technique with the (micro) LED display technology. We achieved an extraordinarily high degree of linearly and circularly polarized luminescence (CPL) through precise control of the nanomaterial assembly structure. Moreover, we realized efficient spatio-temporal modulation of various polarization states. These features enable multiple applications including a secured visible light communication (VLC) system and polarization-based multichannel displays.