Multinary copper-based chalcogenide semiconductor nanocrystals: synthesis and applications in light-emitting diodes and bioimaging

摘要

Colloidal semiconductor nanocrystals have been extensively used for illumination, displays, bioimaging, and other fields. However, the most extensively used Cd-based nanocrystals are toxic. Recently, non-toxic multinary copper-based chalcogenide semiconductor nanocrystals have been studied intensively. The mostly studied in these materials are ternary Cu-In-S nanocrystals which have large adjustable luminescence range, good luminescence efficiency, and excellent device applications. Therefore, this material has been the most potential candidates to replace Cd-based materials. To date, different synthetic methods have been developed to prepare ternary Cu-In-S nanocrystals, which include hot-injection, non-injection, thermal decomposition, and solvothermal route. In order to enhance the luminescence property, incorporating of Zn2+ or overgrowth of a ZnS shell is the comment ways that researchers often use. This review will introduce the synthesis methods of multinary copper-based chalcogenide semiconductor nanocrystals and their potential applications in quantum-dot light-emitting diodes and bioimaging fields. Finally, the conclusion and prospect are provided.