全温度覆盖的三重介电及荧光响应无铅杂化钙钛矿开关材料

Full-temperature covered switching material with triple optic-dielectric states in a lead-free hybrid perovskite

光电响应材料在温度传感、执行器、存储和功能开关领域的应用引起了广泛关注.然而将各种功能整合形成多功能响应材料仍具有挑战性.分子基杂化材料通常是有机和无机成分的杂化混合体.因此,可以通过结构构建将多个功能复合在一个材料中.虽然器件应用需要全温度覆盖,迄今为止却很少能成功地合成全温度覆盖的多开关响应杂化材料.在本文中,动态[(CH3)3NOH]+阳离子和发光中心Mn(II)形成杂化材料[(CH3)3NOH][Mn Cl3],该材料在温度刺激下显示出多重响应行为.温度变化时,[(CH3)3NOH]-[Mn Cl3]在全温度范围(低温、室温和高温)下表现出多重介电态及发光强度或峰值变化的开关响应.这些响应行为是由[(CH3)3-NOH]+阳离子和无机骨架的运动或重新取向而触发的.总之,这种光电开关材料在多重加密存储和传感设备中具有潜在的应用.

Optic-electric responsive materials have attracted much attention for their applications in temperaturesensing,actuators,and memory switches.However,it is a challenge to integrate various functions to form multifunctional responsive materials.As molecule-based hybrid materials usually consist of organic and inorganic components,the introduction of multiple functions can be achieved through structural construction.Thus far,even though fulltemperature cover is required for device applications,fulltemperature covered multi-switchable hybrid materials have rarely been successfully synthesized.Herein,the dynamic[(CH3)3NOH]+cation and luminous center Mn(II)were introduced to form a hybrid material[(CH3)3NOH][Mn Cl3],showing multiple temperature-responsive behaviors.Upon temperature change,it exhibits multi-state dielectric switching response and intensity or peak shift response of luminous in full-temperature range(low,room,and high temperatures).These responsive behaviors are triggered by the motion or reorientation of[(CH3)3NOH]+cations and inorganic framework.Overall,the switchable photoelectric material has potential applications in multiple encrypted storage and sensor devices.