Interaction Between Colloidal Quantum Dots and Halide Perovskites: Looking for Constructive Synergies.

Colloidal Quantum Dots (QDs) have received an extensive attention during the last few decades due to their amazing properties emerging from the quantum confinement. In parallel, halide perovskites have attracted attention by the demonstration of very high performances especially in solar cell and LEDs, and other optoelectronic devices. Both families of materials can be prepared in a relatively simple way, facilitating their integration. There are several examples of their interaction enhancing the properties of the final nanocomposite. Perovskite can effectively passivate QDs, or act as efficient charge transporters. While QDs can be used to modify the selective contacts in perovskite devices or can be used as efficient light emitters or absorbers for enhanced LEDs and Photodetectors, respectively. Moreover, QD can seed the perovskite crystal growth, improving the morphology and ultimately the solar cell performance. In addition, new advanced devices can appear by the constructive synergy between both families of materials.