Chiral perovskites (CPs) have attracted enormous attentions since they have combined chirality and optoelectrical properties well which is promising in circularly polarized luminescence (CPL) application and of great importance for future spin-optoelectronics. However, there is a key contradiction that in chiral perovskites chirality distorts the crystal structure, leading to poor photoluminescence (PL) properties. Achieving the balance between chirality and PL is a major challenge for strong CPL from chiral perovskites. Differently, two-dimensional (2D) chiral perovskite has shown fascinating chiral induced spin selectivity (CISS) effect which can act as spin injector under ambient conditions. Here, we propose an effective strategy to achieve high CPL activity generated from quantum dots (QDs) by introducing 2D chiral perovskite as a chiral source, providing spin polarized carriers through the CISS effect. The as-synthesized QDs/CP composites exhibit dissymmetry factors (g_lum) up to 9.06 × 10⁻³. For the first time, we performed grazing incident wide angle X-ray scattering (GIWAXS) measurements, showing the chirality originates from the distorted lattices caused by the large chiral organic cations. Besides, time-resolved PL (TR-PL) measurements verify the enhanced CPL activity should be attributed to the charge transport between two components. These findings provide a useful method to achieve CPL in QDs/2D chiral perovskite heterojunctions which could be promising in spin-optoelectronics application.

手性钙钛矿（CPs）由于将手性和光电特性很好地结合起来而引起了极大的关注，这在圆偏振发光（CPL）应用中具有广阔的应用前景，并且对未来的自旋光电子学具有重要意义。然而，存在一个关键矛盾，即在手性钙钛矿中，手性扭曲了晶体结构，导致光致发光 (PL) 性能差。实现手性和 PL 之间的平衡是从手性钙钛矿获得强 CPL 的主要挑战。不同的是，二维 (2D) 手性钙钛矿显示出迷人的手性诱导自旋选择性 (CISS) 效应，可以在环境条件下充当自旋注入器。这里，我们提出了一种有效的策略，通过引入二维手性钙钛矿作为手性源，通过 CISS 效应提供自旋极化载流子，实现从量子点 (QD) 产生的高 CPL 活性。合成后的 QD/CP 复合材料表现出不对称因子（g _lum ) 高达 9.06 × 10 ^-3。我们首次进行了掠入射广角 X 射线散射 (GIWAXS) 测量，表明手性源于大手性有机阳离子引起的扭曲晶格。此外，时间分辨 PL (TR-PL) 测量证实增强的 CPL 活性应归因于两个组件之间的电荷传输。这些发现为在 QDs/2D 手性钙钛矿异质结中实现 CPL 提供了一种有用的方法，这在自旋光电应用中具有广阔的前景。