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Potential well
About: Potential well is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 30812 citations.
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TL;DR: In this article, the optical bandgap of polyvinyl alcohol (PVA) capped Sn1-xCuxS nanostructures have been tuned for optoelectronic applications.
11 citations
TL;DR: In this article, the embedded Si structure formed by pattern-dependent oxidation (PADOX) in single-electron transistors (SET) is observed by two microscopic methods, scanning electron microscopy (SEM) and Transmission Electron Microscope (TEM).
11 citations
TL;DR: In this paper, a cubic phase HgTe nanocrystals with a mean size of 5.35 nm have been synthesized by an electrochemical technique and optical absorption measurements reveal two well resolved excitonic peaks around 578.5 nm and 550 nm attributed to heavy hole valence band (HVB)-conduction band (CB) and light hole value band (LVB) transitions, respectively.
Abstract: Mercury Telluride (HgTe) nanocrystals with a mean size of 5.35 nm have been synthesized by an electrochemical technique. Structural analysis by transmission electron microscopy and glancing angle X-ray diffraction studies indicate the presence of cubic phase HgTe nanocrystals in the deposit. Optical absorption measurements reveal two well resolved excitonic peaks around 578.5 nm and 550 nm attributed to heavy hole valence band (HVB)–conduction band (CB) and light hole valence band (LVB)–CB transitions, respectively, and suggest a band opening of bulk inverted narrow band gap HgTe as a result of strong quantum confinement effect (QCE). Visible photoluminescence (PL) of HgTe nanocrystals indicates free exciton transition around 579.5 nm as observed from the PL measurement at 300 K along with a bound exciton dominated band around 588 nm. Micro-Raman measurements at 300 K indicate the 1LO vibrational mode at 142.6 cm-1 shifted by 6 cm-1 from its standard bulk value and confirm the QCE.
11 citations
11 citations
TL;DR: In this article, the authors reported the ZnO/ZnMgO MQWs fabricated under optimized conditions, and the MQW samples, excited by a 325-nm He-Cd laser, exhibited intense ultraviolet photoluminescence (PL) tuned by the quantum confinement effect.
11 citations