Interparticle Spacing Effect among Quantum Dots with High-Pressure Regulation

Autor:	Xiaoli Huang, Fangfei Li, Ji-Chao Cheng, Zhiwei Men, Lingyun Pan, Tian Cui, Yanping Huang, Yinghui Wang, Shuping Xu
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Work (thermodynamics) Potential well Materials science Polymethyl methacrylate Spacing effect General Chemical Engineering Exciton Relaxation (NMR) quantum dot Article lcsh:Chemistry lcsh:QD1-999 Quantum dot Chemical physics High pressure ultrafast dynamic General Materials Science high–pressure
Zdroj:	Nanomaterials Volume 11 Issue 2 Nanomaterials, Vol 11, Iss 325, p 325 (2021)
ISSN:	2079-4991
DOI:	10.3390/nano11020325
Popis:	In this paper, we explore whether interparticle spacing affects steady-state and transient-state optical properties by comparing close-packed CdSe/ZnS&ndash quantum dots (QDs) and CdSe/ZnS&ndash QDs dispersed in polymethyl methacrylate (PMMA). High&ndash pressure is an effective physical means to adjust the interparticle spacing of QDs, which may artificially expand the application of QDs further. The results under high&ndash pressure indicate that it is the reduced interparticle spacing rather than the enhanced quantum confinement effect with volume compression that has a stronger effect on exciton relaxation of CdSe/ZnS&ndash QDs. This work is hoped to help us further understand the effect of interparticle spacing among QDs in various integrated environments.
Databáze:	OpenAIRE
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