Metamorphosis from Quantum Dots to Quantum Shells and Highly Efficient Quantum Shell Light-Emitting Diodes.

ABSTRACT: The bottom-up design of chemical structure affords 0D nanocrystals (NCs) with tunable band structures and unexpected optical properties. Herein, an example of alloyed quantum shell (QS) is demonstrated by tailoring the chemical compositions in its core/shell structure. In the CdZnSe/ZnSeS/CdSeS/CdS (C/S₁/S₂/S₃, in which C is the CdZnSe core and S represents the shells) structure, there is an intriguing metamorphosis from quantum dot (QD) to QS (that is, C and C/S₁ belong to QDs, meanwhile C/S₁/S₂ and C/S₁/S₂/S₃ are in the QS regime). Due to uniform morphology, perfect nanostructure, negligible defects, and unique energy level alignment, the C/S₁/S₂/S₃ QS exhib

SUBMITTER: Chen Z 

PROVIDER: S-EPMC12462930 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature