Elemental-Migration-Assisted Full-Color-Tunable Upconversion Nanoparticles for Video-Rate Three-Dimensional Volumetric Displays

• DOI: 10.1021/acs.nanolett.3c00397
• Publication Date: 2023-03-20T15:27:05Z
• Authors: Kwang Rok Mun; Jihoon Kyhm; Ja Yeon Lee; Seungyong Shin; Yiyuan Zhu; Gumin Kang; Donghwan Kim; Renren Deng; Ho Seong Jang
• Keywords: Photon Upconversion; Polydimethylsiloxane; Full color

Herein, we demonstrate video-rate color three-dimensional (3D) volumetric displays using elemental-migration-assisted full-color-tunable upconversion nanoparticles (UCNPs). In the heavily doped NaErF4:Tm-based core@multishell UCNPs, erbium migration was observed. By tailoring this through adjustment of intermediate shell thickness between core and sensitizer-doped second shell, red-green orthogonal luminescence (UCL) achieved. Furthermore, highly efficient red-green-blue UCL full-color tunability were achieved in UCNPs a combination tuning selective photon blocking. Finally, 3D fabricated UCNP-polydimethylsiloxane composite. More specifically, images created motion pictures based on expansion, rotation, up/down movement displayed realized display matrix. Overall, our study provides new insights into achievement composite is expected to accelerate further development solid-state displays.