Two types of luminescence blinking revealed by spectroelectrochemistry of single quantum dots. Fluorescence intermittency in single cadmium selenide nanocrystals. Spectroscopic insights into the performance of quantum dot light-emitting diodes. Controlling the influence of Auger recombination on the performance of quantum-dot light-emitting diodes. Carrier multiplication detected through transient photocurrent in device-grade films of lead selenide quantum dots. Highly efficient multiple exciton generation in colloidal PbSe and PbS quantum dots. High efficiency carrier multiplication in PbSe nanocrystals: Implications for solar energy conversion. Optical gain and stimulated emission in nanocrystal quantum dots. Continuous-wave lasing in colloidal quantum dot solids enabled by facet-selective epitaxy. Spectroscopic and device aspects of nanocrystal quantum dots. Multicarrier recombination in colloidal quantum dots. Universal size-dependent trend in Auger recombination in direct-gap and indirect-gap semiconductor nanocrystals. Quantization of multiparticle Auger rates in semiconductor quantum dots. Recombination in Semiconductors Cambridge University Press: Cambridge, UK, 2003. However, the scaling factor γ (0.085 ± 0.001 ps/nm 3) is one order of magnitude lower than that reported for CdSe and PbSe QDs (1.00 ± 0.05 ps/nm 3), suggesting unique mechanisms enhancing Auger recombination rate in perovskite NCs. Our measurements clearly reproduce the volume-scaling of τ XX in confined CsPbBr 3 QDs. Here we study biexciton Auger recombination in mono-dispersed (size distributions within 1.7%–9.0%), quantum-confined CsPbBr 3 NCs (with confinement energy up to 410 meV) synthesized using a latest approach based on thermodynamic equilibrium control. However, recent measurements on perovskite nanocrystals (NCs), an emerging class of enablers for light harvesting and emitting applications, showed significant deviations from this universal scaling law, likely because the measured NCs are weakly-confined and also have relatively broad size-distributions. Previous studies of biexciton Auger recombination in various QDs established a universal scaling of biexciton lifetime ( τ XX) with QD volume ( V ): τ XX = γV. As such, understanding the physical underpinnings and scaling laws for Auger recombination is essential to these applications. Auger recombination has been a long-standing obstacle to many prospective applications of colloidal quantum dots (QDs) ranging from lasing, light-emitting diodes to bio-labeling.
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