Development of Self-Assembly Methods on Quantum Dots

Abstract

Quantum dot materials, with their unique photophysical properties, are promising zero-dimensional materials for encryption, display, solar cells, and biomedical applications. However, due to the large surface to volume ratio, they face the challenge of chemical instability and low carrier transport efficiency, which have greatly limited their reliability and utility. In light of the current development bottleneck of quantum dot materials, the chemical stability and physical properties can be effectively improved by the self-assembly method. This review will discuss the research progress of the self-assembly methods of quantum dots and analyze the advantages and disadvantages of those self-assembly methods. Furthermore, the scientific challenges and improvement in the self-assembly method of quantum dots are prospected.

Breaking AgInTe2 Quantum Dot Chain to Fabricate AgInTe2–ZnS Janus Nanocrystals

“…We presume this fast self-assembly process hindered the QD formation to date, 41,42 and instead of QD, uncontrolled self-assembly led to quasi tetrahedrons or the AgInTe 2 nanorod formation. 19,21,43 However, as the reaction proceeds (85 min after injection of the Ag-DDT precursor), we believe that the rapid selforganization of QDs due to strong van der Waals interaction 34,36 leads to the formation of the QDC. Upon further growth, the side-by-side assembly of the QDC leads to MR formation.…”

“…We believe the synergistic capping agent (DDT and OA) has a significant role in the stabilization and isolation of the metastable MR. , To the best of our knowledge, we could also obtain monodisperse, tetragonal AgInTe 2 QDs by arresting the self-assembly process, probably for the first time in the literature. We presume this fast self-assembly process hindered the QD formation to date, , and instead of QD, uncontrolled self-assembly led to quasi tetrahedrons or the AgInTe 2 nanorod formation. ,, However, as the reaction proceeds (85 min after injection of the Ag-DDT precursor), we believe that the rapid self-organization of QDs due to strong van der Waals interaction , leads to the formation of the QDC. Upon further growth, the side-by-side assembly of the QDC leads to MR formation.…”

Study of self- assembly structures of carbon quantum dots

“…According to another study [9], coupling between individual QDs can also create favorable conditions for superfluorescence emission in a superlattice of SA QDs. In addition to enhancing radiative performance, selforganizing QDs have the advantage, depending on the selected method [10], of allowing for controllable QD distribution and size.…”