Kwon Junyoung, Jeon Jae Bum, Lee Min Gu, Jeong Serin, Choi Won Jin, Kim Kyung Min, Yeom Jihyeon
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.
Major of Nanotechnology Engineering, Pukyong National University, Busan, Republic of Korea.
Nat Commun. 2025 May 3;16(1):4134. doi: 10.1038/s41467-025-59091-9.
Chiroptoelectronic devices are crucial for applications in quantum computing, spin optical communications, and magnetic recording. However, the limited efficiency and low stability of conventional circularly polarized light (CPL)-sensing materials have restricted their broader use. Here, we introduce atomic chiral Se nanorod (NRs) films as broadband CPL detectors, leveraging the intrinsic chirality and stability of Se nanocrystals. We also perform incident circular polarization (ICP)-Raman optical activity (ROA) to explore the chiroptical activity of the large-area films. The Se NRs thin films detected CPL across a broad range from ultraviolet (UV) to short-wavelength infrared (SWIR), with a responsivity dissymmetry factor of up to 0.4, maintaining high stability under ambient conditions for longer than 13 months. CPL-sensitive Se NRs with intrinsic chirality have potential applications in chiral photonic synapses, chiral spin devices, and CPL-sensitive photocatalysts. ICP-ROA mapping also advances the analysis of 2D chiral materials.
手性光电器件对于量子计算、自旋光通信和磁记录等应用至关重要。然而，传统圆偏振光（CPL）传感材料的效率有限且稳定性较低，限制了它们的广泛应用。在此，我们引入原子手性硒纳米棒（NRs）薄膜作为宽带CPL探测器，利用硒纳米晶体的固有手性和稳定性。我们还进行了入射圆偏振（ICP）-拉曼光学活性（ROA）实验，以探索大面积薄膜的手性光学活性。硒NRs薄膜能够在从紫外（UV）到短波长红外（SWIR）的宽范围内检测CPL，响应不对称因子高达0.4，在环境条件下保持高稳定性超过13个月。具有固有手性的CPL敏感硒NRs在手性光子突触、手性自旋器件和CPL敏感光催化剂方面具有潜在应用。ICP-ROA映射也推动了二维手性材料的分析。
