Organic Chiroptical Detector Favoring Circularly Polarized Light Detecting from Near-Infrared to Ultraviolet and Magnetic Field Amplifying Dissymmetry in Detectivity.

Circularly polarized light detecting has attracted growing attention because of its unique application in security surveillance and quantum optics. Here, through designing chiral polymer as a donor, a high-performance circularly polarized light detector was fabricated successfully enabling the detection from ultraviolet (300 nm) to near-infrared (1100 nm). The chiroptical detector presents an excellent ability to distinguish the right-handed and left-handed circularly polarized light, where dissymmetries in detectivity, responsivity, and electric current are obtained and then optimized. The dissymmetry in electric current can be increased from 0.18 to 0.23 once applying an external magnetic field. This is a very rare report on the dissymmetry tunability by external field in chiroptical detectors. Moreover, the chirality generated orbital angular momentum is one of the key factors determining the performance of circularly polarized light detection. Overall, the organic chiroptical detector presents excellent stability in detecting, which provides a great potential for future flexible and compact integrated platforms. This article is protected by copyright. All rights reserved.