Elastic Organic Crystals Exhibiting Amplified Spontaneous Emission Waveguides with Standard Red Chromaticity of the Rec.2020 Gamut

Author:

Chen Quanliang1,Tang Baolei1,Ye Kaiqi1,Zhang Hongyu1ORCID

Affiliation:

1. State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Qianjin Street Changchun 130012 P. R. China

Abstract

AbstractThe use of mechanically flexible molecular crystals as optical transuding media is demonstrated for a plethora of applications; however, the spectral peaks of optical outputs located mainly in the range of 400–600 nm are insufficient for practical telecommunication and full‐color display applications. Herein, two elastically bendable organic crystals are reported that show red emission of the rec.709 gamut under 365 nm UV light irradiation yet generate rec.2020 gamut red optical waveguides and amplified spontaneous emissions when irradiated by a 355 nm laser. Capitalizing on the extended π‐conjugation and donor–acceptor character, as well as mechanical elasticity, these organic crystals exhibit flexible optical waveguides with Commission Internationale de L'Eclairage (CIE) coordinates of (0.70, 0.29), nearly identical to the red chromaticity of the rec.2020 gamut required for ultrahigh‐definition (UHD) displays. Notably, one of the elastic crystals functions as a soft resonance cavity, resulting in amplified spontaneous emission waveguides with CIE coordinates of (0.71, 0.29) and the standard red chromaticity of the rec.2020 gamut, both in straight and bent states. This study presents a new avenue for the development of high‐purity red‐emissive crystalline materials to create all‐organic, lightweight, and mechanically compliant optical telecommunication and UHD display devices.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Jilin Province

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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