Share Email Print
cover

Proceedings Paper

Growth mechanism of nanowires: binary and ternary chalcogenides
Author(s): N. B. Singh; S. R. Coriell; Ching Hua Su; R. H. Hopkins; B. Arnold; Fow-Sen Choa; Brian Cullum
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Semiconductor nanowires exhibit very exciting optical and electrical properties including high transparency and a several order of magnitude better photocurrent than thin film and bulk materials. We present here the mechanism of nanowire growth from the melt-liquid-vapor medium. We describe preliminary results of binary and ternary selenide materials in light of recent theories. Experiments were performed with lead selenide and thallium arsenic selenide systems which are multifunctional material and have been used for detectors, acoustooptical, nonlinear and radiation detection applications. We observed that small units of nanocubes and elongated nanoparticles arrange and rearrange at moderate melt undercooling to form the building block of a nanowire. Since we avoided the catalyst, we observed self-nucleation and uncontrolled growth of wires from different places. Growth of lead selenide nanowires was performed by physical vapor transport method and thallium arsenic selenide nanowire by vapor-liquid-solid (VLS) method. In some cases very long wires (>mm) are formed. To achieve this goal experiments were performed to create situation where nanowires grew on the surface of solid thallium arsenic selenide itself.

Paper Details

Date Published: 13 May 2016
PDF: 7 pages
Proc. SPIE 9863, Smart Biomedical and Physiological Sensor Technology XIII, 986304 (13 May 2016); doi: 10.1117/12.2220154
Show Author Affiliations
N. B. Singh, Univ. of Maryland, Baltimore County (United States)
S. R. Coriell, Univ. of Maryland, Baltimore County (United States)
Ching Hua Su, NASA Marshall Space Flight Ctr. (United States)
R. H. Hopkins, Hopkins, Inc. (United States)
B. Arnold, Univ. of Maryland, Baltimore County (United States)
Fow-Sen Choa, Univ. of Maryland, Baltimore County (United States)
Brian Cullum, Univ. of Maryland, Baltimore County (United States)


Published in SPIE Proceedings Vol. 9863:
Smart Biomedical and Physiological Sensor Technology XIII
Brian M. Cullum; Douglas Kiehl; Eric S. McLamore, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray