Halide perovskite quantum dots (QDs) are regarded as a family of promising materials owing to their outstanding optoelectronic properties. Nevertheless, this class of nanocrystals generally displays unsatisfactory activity in such fields as photovoltaics and photocatalysis, as a result of the serious charge recombination and poor carrier separation. Herein, with the aim to enhance the charge transport property of halide perovskite QDs, we anchored CsPbI₃ QDs on a conducting polymer, polypyrrole (PPy) and obtained a CsPbI₃ QDs/PPy microrod 0D/1D heterostructure. Due to high electrical conductivity of the PPy polymer, the obtained CsPbI₃/PPy composite displayed efficient charge transfer property, as proved by increased photocurrent response and decreased PL intensity. Our work reveals a promising way for enhancing the charge transport property of halide perovskite QDs, thereby facilitating their potential applications in photovoltaics and photocatalysis.

卤化物钙钛矿量子点（QD）由于其出色的光电性能而被认为是一类有前途的材料。然而，由于严重的电荷复合和较差的载流子分离，这类纳米晶体在光伏和光催化等领域通常表现出令人不满意的活性。在此，为了增强卤化物钙钛矿量子点的电荷传输性能，我们将 CsPbI ₃量子点锚定在导电聚合物聚吡咯 (PPy) 上，并获得了 CsPbI ₃ QDs/PPy 微棒 0D/1D 异质结构。由于 PPy 聚合物的高导电性，获得的 CsPbI ₃/PPy 复合材料显示出有效的电荷转移特性，这可以通过增加的光电流响应和降低的 PL 强度来证明。我们的工作揭示了一种增强卤化物钙钛矿量子点电荷传输性能的有前途的方法，从而促进了它们在光伏和光催化中的潜在应用。