Exciton Fine Structure in Lead Chalcogenide Quantum Dots: Valley Mixing and Crucial Role of Intervalley Electron-Hole Exchange.
Sign Up to like & getrecommendations! Published in 2020 at "Nano letters"
DOI: 10.1021/acs.nanolett.0c03937
Abstract: We study the exciton fine structure in quantum dots of multivalley lead chalcogenides. We demonstrate that intervalley electron-hole exchange interaction, ignored in previous studies, dramatically modifies the exciton fine structure and leads to appearance of… read more here.
Keywords: intervalley electron; exciton fine; electron hole; fine structure ... See more keywords
Substrate effects on the exciton fine structure of black phosphorus quantum dots
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DOI: 10.1103/physrevb.96.035122
Abstract: We study the size-dependent exciton fine structure in monolayer black phosphorus quantum dots (BPQDs) deposited on different substrates (isolated, Si and SiO$_2$) using a combination of tight-binding method to calculate the single-particle states, and the… read more here.
Keywords: quantum; exciton fine; black phosphorus; phosphorus quantum ... See more keywords
Measuring Exciton Fine-Structure in Randomly Oriented Perovskite Nanocrystal Ensembles Using Nonlinear Optical Spectroscopy: Theory
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DOI: 10.3390/nano12050801
Abstract: Lead halide perovskite nanocrystals (PNCs) exhibit unique optoelectronic properties, many of which originate from a purported bright-triplet exciton fine-structure. A major impediment to measuring this fine-structure is inhomogeneous spectral broadening, which has limited most experimental… read more here.
Keywords: randomly oriented; exciton fine; spectroscopy; fine structure ... See more keywords