Metal halide perovskites are exceptional light-emitting materials. Endowing perovskites with circularly polarized luminescence (CPL) offers great promise for innovative applications, but the existing strategies are inefficient in acquiring large dissymmetry factor (g_lum), high quantum efficiency, and long-term stability. Here, we demonstrate bright and stable CPL with a g_lum value up to 1.9 from perovskites in chiral liquid crystal (LC)-based soft helix devices featuring a bilayer architecture. The incorporation of an optimized polymer of polyacrylonitrile (PAN) in the bilayer device remarkably improves luminescent efficiency and stability of perovskite, while perfectly preserving optical and stimuli-responsive characteristics of chiral LCs. The resulting bilayer devices allow systematical composition engineering of both perovskite and soft helix and enable full-color CPL with high g_lum values. Moreover, CPL-active devices with diverse graphical patterns and reversible thermal-switching behavior can further expand the scaffold for cryptology and anti-counterfeiting applications.

金属卤化物钙钛矿是一种特殊的发光材料。赋予钙钛矿以圆偏振发光（CPL）为创新应用提供了巨大的希望，但现有的策略在获得大的不对称因子（g _lum）、高量子效率和长期稳定性方面效率低下。在这里，我们展示了明亮且稳定的 CPL 与g _lum在具有双层结构的基于手性液晶 (LC) 的软螺旋器件中，钙钛矿的值高达 1.9。在双层器件中加入优化的聚丙烯腈 (PAN) 聚合物显着提高了钙钛矿的发光效率和稳定性，同时完美地保留了手性 LC 的光学和刺激响应特性。_{由此产生的双层器件允许钙钛矿和软螺旋的系统组合工程，并实现具有高亮度}值的全彩色 CPL 。此外，具有多种图形模式和可逆热切换行为的 CPL 有源器件可以进一步扩展用于密码学和防伪应用的支架。