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Nanophotonics
As reported by Sohee Jeong, Dongho Kim, and co‐workers in article number 2110665, by tuning their shape, single‐crystalline InP nanocrystals undergo a transition from single‐ to multiphoton emitter. The geometric parameters of individual nanotetrapod particles drive a changeover of exciton confinement dimension. Interactions between multiple excitons in the tetrapodal geometry allow...
As the properties of a semiconductor material depend on the fate of the excitons, manipulating exciton behavior is the primary objective of nanomaterials. Although nanocrystals exhibit unusual excitonic characteristics owing to strong spatial confinement, studying the interactions between excitons in a single nanoparticle remains challenging due to the rapidly vanishing multiexciton species. Here,...
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