Topic
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 possibility of locally varying the potential energy of the electrons and holes localized in a quantum well by a quantum-dot array deposited in the immediate vicinity of the quantum well is demonstrated.
Abstract: The possibility of locally varying the potential energy of the electrons and holes localized in a quantum well by a quantum-dot array deposited in the immediate vicinity of the quantum well is demonstrated. These changes in the potential energy are induced when a strain arises in the quantum-dot region.
7 citations
TL;DR: In this article, the effect of surface morphology of nanotextured InAs/Ge epilayers on their optical properties is presented, and a plasmon-LO phonon coupled mode originating from the accumulated surface of InAs is identified.
7 citations
TL;DR: In this paper, the authors reported the simple and low-cost synthesis of undoped, Zr2+, Rh3+ and Pd2+ doped ZnS quantum dots (QDs) by a microwave-assisted method.
7 citations
01 Jan 2010
TL;DR: In this article, the synthesis of La doped ZnO nanoparticles using phase reaction-precursor method and characterization of the sample by XRD, SEM and TEM analysis is reported.
Abstract: Synthesize and study of nanostructured materials have become a major attractive interdisciplinary area of research over the past fast few decades. Recently, transition metal(TM) and rare earth ion doped II-IV semiconductor nanoparticles have received much attention because such doping can modify and improve optical properties of II-IV semiconductor nanoparticles by large amount [1-5]. Usually, semiconducting nanoparticles are known to exhibit exotic physico-chemical properties due to quantum confinement effect. Especially, doped luminescent nanoparticles are predicted to show improved optical properties, viz., luminescence efficiency, and delay time and band edge emission with respect to particle size variation. These properties have opened up a number of new areas of applications for these materials such as DNA markers, biosensors, light emitting diodes, lasers, etc as well as in spintronics and photocatalyst. Different routes to obtain doped ZnO materials have been studied [6] namely, the incorporation of rare earth metal ions into a semiconductor photocatalyst by ion implantation or by coprecipitation. Doping with rare earth elements leads to many interesting properties of ZnO. In this article, it is reported that the synthesis of La doped ZnO nanoparticles rheological phase reaction-precursor method and characterization of the sample by XRD, SEM and TEM analysis. UV absorption and PL spectroscopy has been used to study the influence of La doping on the optical properties of ZnO nanocrystals at room temperature.
7 citations
TL;DR: In this paper, a broad near-infrared absorption step occurs in the optical absorption spectrum of the wavelength range from 300 to 1500nm, which is attributed to electronic transitions from the ground states to the excitation states of the impurity energy levels.
7 citations