机械化学促成可调谐光-电多功能响应二维杂化钙钛矿材料

Mechanochemistry enables optical-electrical multifunctional response and tunability in two-dimensional hybrid perovskites

二维有机-无机杂化钙钛矿因在光伏、光电子等领域的巨大应用潜力而备受关注.此外,该类材料具有突出的结构可调性和材料稳定性,为功能性质的设计调控及器件应用提供了丰富的材料设计平台.然而,将多种物理通道的性质整合实现材料的多功能性仍具有挑战性,而对其进行快速有效的调节更是难上加难.迄今为止,尚未成功实现可调谐的光电多通道响应材料.本文成功开发了一种简便有效的机械力化学合成方法,可实现二维杂化钙钛矿中的多功能光电集成和调控.温和的外部机械刺激可快速形成锰掺杂的二维杂化钙钛矿(Cyclopropylammonium)2Pb(1-x)MnxBr4,并迅速调节其光学性质并诱导高温介电开关,实现高效的蓝色、白色、粉红色和橙色荧光特性.这项工作将为多功能光电响应材料的快速有效设计提供新的视角,也将为低成本、高效率智能设备的进一步开发和应用提供新的机遇.

Two-dimensional(2D)organic-inorganic hybrid perovskites(OIHPs)have attracted phenomenal attention because of their superior optoelectronic performances.The combination of their structural tunability and material stability offers an unprecedented opportunity to engineer materials with unique functionalities.However,developing a rapid and effective design method for introducing luminescence into dielectric switch and realizing controllable regulation has been an enormous challenge.Thus far,materials with tunable optoelectronic multichannel response have not been successfully implemented.In this study,we successfully developed a facile and effective mechanochemical method for realizing the integration and regulation of luminescence and dielectric switch in 2D perovskites,which is unprecedented for the design of dielectric switching materials.The mild external mechanical stimuli enabled the formation of Mn ion-doped 2D hybrid perovskites(Cyclopropylammonium)2Pb1-xMnxBr4 with excellent dielectric switch and rapidly controllable luminescence of highly efficient blue light,white light,pink light,and orange light.This work will provide a new perspective on the rapid and effective design of multifunctional materials and can inspire the future development of low-cost and high-efficiency electronics.