How to effectively utilize the energy of the broad spectrum of sunlight is one of the basic problems in the research of tandem solar cells. Due to their size effect, quantum confinement effect and coupling effect, colloidal quantum dots (QDs) exhibit new physical properties that bulk materials don't possess. CdX (X = Se, S, etc.) and PbX (X = Se, S, etc.) QDs prepared by hot-injection methods have been widely studied in the areas of photovolitaic devices. However, the surfactants surrounding QDs seriously hinder the charge transport of QDs based solar cells. Therefore, how to fabricate high-performance tandem solar cells via ligands engineering has become a major challenge. In this paper, the latest progress of colloidal QDs in the research of all-inorganic tandem solar cells was summarized. Firstly, the improvement of QDs surface ligands and the optimization of ligands engineering were discussed, and the control of the physical properties of QDs films were realized. From the aspects of colloidal QDs, ligand engineering, and solar cell preparation, the future development direction of colloidal QDs solar cells was proposed, providing technical guidances for the preparation of low-cost and high-efficiency nanocrystalline solar cells.

如何有效地利用广谱太阳光的能量是串联太阳能电池研究的基本问题之一。由于它们的尺寸效应，量子约束效应和耦合效应，胶体量子点（QD）展现出了散装材料不具备的新物理特性。通过热注入方法制备的CdX（X = Se，S等）和PbX（X = Se，S等）在光电器件领域已得到广泛研究。但是，QD周围的表面活性剂严重阻碍了基于QD的太阳能电池的电荷传输。因此，如何通过配体工程来制造高性能的串联太阳能电池已经成为主要的挑战。本文总结了胶体量子点在全无机串联太阳能电池研究中的最新进展。首先，讨论了量子点表面配体的改进和配体工程的优化，实现了量子点薄膜物理性能的控制。从胶体量子点，配体工程和太阳能电池制备等方面，提出了胶体量子点太阳能电池的未来发展方向，为低成本，高效率的纳米晶太阳能电池的制备提供技术指导。