In this article, the beneficial effect of surface passivation rendered by the amalgamation of co-ordinating tri-n-octylphophine (TOP), oleylamine (OLA), and oleic acid mixture on the structural and optoelectronic properties of lead selenide (PbSe) quantum dots (QDs) (~6–20 nm) and its respective poly(3-hexylthiophene) (P3HT) polymer: PbSe composites has been demonstrated. Here, OLA ligand is found to play a major role in the nucleation and growth mechanism and hence control of the size distribution of the resultant PbSe QDs. The superior quality of the OLA-passivated PbSe QDs can be attributed to its better homogeneity, colloidal and photostability, which it imparts to its respective polymer: PbSe composites as compared to the corresponding OA-passivated PbSe QDs. The role of post-synthesis ligand exchange/removal has been envisaged to facilitate efficient charge transport in hybrid composites and has been modeled pictorially. Accordingly, P3HT: PbSe (OLA) composites exhibit significant PL quenching and hence higher current and better charge transfer characteristics as compared to their OA-counterparts. An exhaustive structural, optical and electrical investigations as corroborated by various complimentary techniques (TEM/SEM, XRD, NMR, FTIR, NIR-Absorption, PL, XPS, and I-V) have resulted in some significant findings wherein the effective stabilizing and etching properties with an optimum binding capability of OLA ligands to PbSe surface are found to be imperative for its effective utilization in hybrid composite photovoltaic devices. The superior morphology, optical properties, and higher stability of OLA-capped PbSe QDs can aid in the proper understanding of efficient charge separation and transport in hybrid organic–inorganic nanocomposites solar cells based on colloidal PbSe nanocrystals.

在这篇文章中，配位三正辛基膦 (TOP)、油胺 (OLA) 和油酸混合物的混合物表面钝化对硒化铅 (PbSe) 量子点的结构和光电特性的有益影响（QDs）（~6-20 nm）及其各自的聚（3-己基噻吩）（P3HT）聚合物：PbSe 复合材料已被证明。在这里，发现 OLA 配体在成核和生长机制中起主要作用，因此控制所得 PbSe QD 的尺寸分布。OLA 钝化 PbSe QD 的卓越品质可归因于其更好的均质性、胶体和光稳定性，与相应的 OA 钝化 PbSe QD 相比，它赋予其各自的聚合物：PbSe 复合材料。合成后配体交换/去除的作用已被设想以促进混合复合材料中的有效电荷传输，并已进行图形建模。因此，P3HT: PbSe (OLA) 复合材料表现出显着的 PL​​ 猝灭，因此与其 OA 对应物相比具有更高的电流和更好的电荷转移特性。通过各种互补技术（TEM/SEM、XRD、NMR、FTIR、NIR 吸收、PL、XPS 和 IV）证实的详尽的结构、光学和电学研究得出了一些重要发现，其中有效的稳定和蚀刻性能与发现 OLA 配体与 PbSe 表面的最佳结合能力对于其在混合复合光伏器件中的有效利用是必不可少的。优越的形态、光学性能、