Journal ArticleDOI
Optical properties of gallium arsenide nanocrystals
TLDR
In this paper, a modification of a previous synthesis for the formation of GaAs nanocrystals is reported, which produces quantized GaAs colloids which do not also contain molecular species which interfere with the optical properties of the GaAs particles.Abstract:
A modification of a previous synthesis for the formation of GaAs nanocrystals is reported. Unlike the previous synthesis, the new procedure produces quantized GaAs colloids which do not also contain molecular species which interfere with the optical properties of the GaAs particles. The GaAs colloids have been characterized by transmission electron microscopy, electron diffraction, ultrafiltration, absorption and photoluminescence spectroscopy, and transient pumpprobe spectroscopy; these experiments indicate that the particles have a size ranging from 20 to 80 Aread more
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Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe Nanocrystals
TL;DR: In this paper, the authors describe the synthesis of ZnS-capped CdSe semiconductor nanocrystals using organometallic reagents by a two-step single-flask method X-ray photoelectron spectroscopy, transmission electron microscopy and optical absorption.
Journal ArticleDOI
Low-dimensional systems: quantum size effects and electronic properties of semiconductor microcrystallites (zero-dimensional systems) and some quasi-two-dimensional systems
TL;DR: In this paper, a review is concerned with quantum confinement effects in low-dimensional semiconductor systems, focusing on the optical properties, including luminescence, of nanometre-sized microcrystals.
Journal ArticleDOI
Solution-Liquid-Solid Growth of Crystalline III-V Semiconductors: An Analogy to Vapor-Liquid-Solid Growth
Timothy J. Trentler,Kathleen M. Hickman,Subhash C. Goel,A. M. Viano,Patrick C. Gibbons,William E. Buhro +5 more
TL;DR: In this article, a solution-liquid-solid mechanism for the growth of InP, InAs, and GaAs is described that uses simple, low-temperature (≤203°C), solution-phase reactions.
Journal ArticleDOI
Crystallographically oriented mesoporous WO3 films: synthesis, characterization, and applications.
TL;DR: Mesoporous semiconducting films consisting of preferentially orientated monoclinic-phase nanocrystals of tungsten trioxide have been prepared using a novel version of the sol-gel method, combining excellent photoresponse to the blue region of the solar spectrum, up to 500 nm, with good transparency at wavelengths larger than 550 nm.
Journal ArticleDOI
Spectroscopy and hot electron relaxation dynamics in semiconductor quantum wells and quantum dots.
TL;DR: The effects of size quantization in semiconductor quantum wells (carrier confinement in one dimension and quantum dots) on the respective carrier relaxation processes are reviewed, with emphasis on electron cooling dynamics.