手性钙钛矿的制备及其圆偏振光探测应用

Circularly polarized light (CPL) detection is required in various fields such as drug screening, remote sensing and optics. Conventional CPL needs the installation of optical elements, imposing difficulties for integrated and flexible devices. The direct CPL detection can be realized by using the absorption difference of materials to left- and right-CPL, which is ease of integration. based on organic semiconductor and metal metamaterials enable the direct CPL detection, but suffering from low responsivity of <0.01 A/W, which seriously limits its application in real life. The applicant previously obtained the organic-inorganic hybrid via introducing amines into , and achieved the primary CPL detection. Here we intend to increase the selection range of materials, study the coupling effect between A-site molecules and metal halogen frameworks, understand the transfer mechanism of chirality from chiral organic amine to and explore the application of materials in CPL detection, expecting to achieve a high sensitive CPL detector with differentiation and responsivity higher than 1 and 1A/W, respectively.

圆偏振光探测在药物筛选、远程遥感、量子光学等领域有重要应用。在常规光电探测器的基础上集成光学元件即可实现圆偏振光探测，但其会给器件的集成化和柔性化带来困难。利用手性材料对左/右旋光的差异性吸收，可实现对圆偏振光的直接探测，具有系统简单、易集成的优势。基于手性有机半导体和手性超结构的光电探测器件已经实现了对圆偏振光的直接探测，但其响应度低于0.01A/W，严重限制了其在实际生活中的应用。申请人前期发现，在有机无机杂化钙钛矿中引入手性胺，可构建手性结构的钙钛矿材料，并初步实现了圆偏振光探测。本项目拟加大手性钙钛矿材料的筛选范围，研究手性A位分子与金属卤素骨架之间的耦合作用，理解手性从有机胺到钙钛矿的传递机制与规律，拓展手性材料在圆偏振光探测领域的应用，期望实现手性区分度大于1，响应度超过1 A/W的高灵敏圆偏振光探测器器件。

圆偏振光探测在药物筛选、远程遥感、量子光学等领域有重要应用。在常规光电探测器的基础上集成光学元件即可实现圆偏振光探测，但其会给器件的集成化和柔性化带来困难。利用手性材料对左/右旋光的差异性吸收，可实现对圆偏振光的直接探测，具有系统简单、易集成的优势。基于手性有机半导体和手性超结构的光电探测器件已经实现了对圆偏振光的直接探测，但其响应度低于0.01A/W，严重限制了其在实际生活中的应用。申请人在有机无机杂化钙钛矿中引入手性胺，构建手性结构的钙钛矿材料，实现了圆偏振光探测。本项目研究了手性A位分子与金属卤素骨架之间的耦合作用，理解手性从有机胺到钙钛矿的传递机制与规律，筛选了双手性位点的DPA有机胺，并实现了手性放大的钙钛矿晶体。在此基础上，申请人基于手性ZnO硬模板法将手性传递给无机非手性的钙钛矿和硫化铅量子点，实现了圆偏振发光和圆偏光探测。相关工作促进了手性钙钛矿和偏振探测器的发展，具有一定的科学创新性。基于本项目的经费支持，在项目执行期以申请人为通讯作者或一作论文22篇，申请中国专利15项。