School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Melbourne, Parkville, Victoria, 3010, Australia.
Adv Mater. 2023 Jun;35(23):e2211935. doi: 10.1002/adma.202211935. Epub 2023 Apr 25.
Circularly polarized light detection has attracted growing attention because of its unique application in security surveillance and quantum optics. Here, through designing a chiral polymer as a donor, a high-performance circularly polarized light detector is fabricated, successfully enabling detection from ultraviolet (300 nm) to near-infrared (1100 nm). The chiroptical detector presents an excellent ability to distinguish 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 an external magnetic field is applied. This is a very rare report on the dissymmetry tunability by an external field in chiroptical detectors. Moreover, the chirality-generated orbital angular momentum is one of the key factors determining the performance of the circularly polarized light detection. Overall, the organic chiroptical detector presents excellent stability in detection, which provides great potential for future flexible and compact integrated platforms.
圆偏振光检测因其在安全监控和量子光学中的独特应用而引起了越来越多的关注。在这里，通过设计手性聚合物作为给体，制备了一种高性能的圆偏振光探测器，成功实现了从紫外（300nm）到近红外（1100nm）的检测。该手性光探测器具有优异的区分右圆偏振光和左圆偏振光的能力，其中探测率、响应率和电流的不对称性得到了优化。施加外磁场后，电流的不对称性可以从 0.18 增加到 0.23。这在手性光探测器中外磁场可调谐不对称性方面是一个非常罕见的报告。此外，手性产生的轨道角动量是决定圆偏振光检测性能的关键因素之一。总的来说，有机手性光探测器在检测方面表现出优异的稳定性，为未来灵活紧凑的集成平台提供了巨大的潜力。
