Phys.org  November 26, 2024 Supraparticles comprising semiconductor colloidal quantum dots as building blocks are a new class of microscopic lasers with a wide host of applications. Despite the recent advances in their fabrication, there have been no reports of their quantum dot components being recovered for use in a circular economy. Researchers in the UK demonstrated a novel method for the recycling of whispering-gallery-mode supraparticle lasers with a quantum dot recovery yield of 85%. The photoluminescence quantum yield of the recycled quantum dots was retained at 83 ± 16% from the initial batch of 86 ± 9%. The recycled quantum […]