Gradient Type‐II CdSe/CdSeTe/CdTe Core/Crown/Crown Heteronanoplatelets with Asymmetric Shape and Disproportional Excitonic Properties (Small 11/2023)

Abstract

Multi‐Crown Type‐II Nanoplatelets In article number 2205729, Hilmi Volkan Demir and co‐workers discuss the recombination dynamics of CdSe/CdSeTe/CdTe core/crown/crown nanoplatelets (NPLs) with a step‐wise gradient electronic structure. The NPLs possess disproportional electron and hole wavefunction distributions, in which the activation/deactivation of direct and indirect channels is possible by adjusting the domains' geometry. These NPLs demonstrate exceptionally high two‐photon absorption cross‐section and low dark‐bright exciton splitting energy.