On the kinetics and thermodynamics of excitons at the surface of semiconductor nanocrystals: Are there surface excitons?

P Kambhampati - Chemical Physics, 2015 - Elsevier
The surface of semiconductor nanocrystals is one of their defining features by virtue of their
nanometer size. Yet the surface is presently among the most poorly understood aspects of …

Slow Auger recombination of charged excitons in nonblinking perovskite nanocrystals without spectral diffusion

F Hu, C Yin, H Zhang, C Sun, WW Yu, C Zhang… - Nano …, 2016 - ACS Publications
Over the last two decades, intensive research efforts have been devoted to the suppressions
of photoluminescence (PL) blinking and Auger recombination in metal-chalcogenide …

Single quantum dot spectroscopy for exciton dynamics

B Li, G Zhang, Y Gao, X Chen, R Chen, C Qin, J Hu… - Nano Research, 2024 - Springer
Colloidal semiconductor quantum dots (QDs) exhibit broadband light absorption,
continuously tunable narrowband emission, and high photoluminescence quantum yields …

Effect of spectral overlap and separation distance on exciton and biexciton quantum yields and radiative and nonradiative recombination rates in quantum dots near …

V Krivenkov, D Dyagileva, P Samokhvalov… - Annalen der …, 2020 - Wiley Online Library
Efficient biexciton (BX) photoluminescence (PL) from quantum dots (QDs) paves the way to
the generation of entangled photons and related applications. However, the quantum yield …

Attractive versus repulsive excitonic interactions of colloidal quantum dots control blue-to red-shifting (and non-shifting) amplified spontaneous emission

AF Cihan, Y Kelestemur, B Guzelturk… - The Journal of …, 2013 - ACS Publications
Tunable, high-performance, two-photon absorption (TPA)-based amplified spontaneous
emission (ASE) from near-unity quantum efficiency colloidal quantum dots (CQDs) is …

Carrier multiplication in a single semiconductor nanocrystal

F Hu, B Lv, C Yin, C Zhang, X Wang, B Lounis… - Physical Review Letters, 2016 - APS
To confirm the existence of the carrier multiplication (CM) effect and estimate its generation
efficiency of multiple excitons in semiconductor nanocrystals (NCs), it is imperative to …

Shell-dependent blinking behavior and fluorescence dynamics of single ZnSe/CdS core/shell quantum dots

X Guo, Y Kuang, S Wang, Z Li, H Shen, L Guo - Nanoscale, 2018 - pubs.rsc.org
An understanding of blinking behavior and photodynamics is crucial for improving the
optical properties of quantum dots (QDs). Here we report the emission blinking behavior and …

Type-tunable amplified spontaneous emission from core-seeded CdSe/CdS nanorods controlled by exciton–exciton interaction

Y Kelestemur, AF Cihan, B Guzelturk, HV Demir - Nanoscale, 2014 - pubs.rsc.org
Type-tunable optical gain performance of core-seeded CdSe/CdS nanorods is studied via
two-photon optical pumping. Controlling the exciton–exciton interaction by varying the core …

Energy transfer of biexcitons in a single semiconductor nanocrystal

X Huang, Q Xu, C Zhang, X Wang, M Xiao - Nano letters, 2016 - ACS Publications
Photoluminescence (PL) decay dynamics of multiexcitons in semiconductor nanocrystals
(NCs) are dominated by the nonradiative Auger effect, making it difficult to explore their …

Effect of Heterojunction on Exciton Binding Energy and Electron–Hole Recombination Probability in CdSe/ZnS Quantum Dots

JM Elward, A Chakraborty - Journal of Chemical Theory and …, 2015 - ACS Publications
Presence of heterojunctions is important for generation of free charge carriers and the
dissociation of bound electron–hole pairs in semiconductor nanoparticles. This work …