CdS nanowires: ultra-long growth and enhanced field emission properties

TitleCdS nanowires: ultra-long growth and enhanced field emission properties
Publication TypeJournal Article
Year of Publication2014
AuthorsChavan, PG, Kashid, RV, Badhade, SS, Mulla, IS, More, MA, Joag, DS
JournalVaccum
Volume101
Pagination38-45
Date PublishedMAR
Type of ArticleArticle
ISSN0042-207X
KeywordsCurrent stability, field emission, synthesis
Abstract

Here, we report the synthesis of ultra-long CdS nanowires with aspect ratio similar to 8 x 10(4) by simple route of thermal evaporation technique. A change in the vertical arrangement of quartz boats leads in to the synthesis of ultra-long CdS nanovvires via high degree of condensation. This technique is seen to be cost effective and easy. The growth of the nanowires is found to be increased very rapidly from few micrometers to few millimeters. The possible reason for the growth of the ultra-long CdS nanowires is discussed in detail. The turn-on field defined for the current density of similar to 0.1 mu A/cm(2) has been found to be similar to 1.4, 1.45, 1 and 0.17 V/mu m for specimen A, B, C and D (specimens A-D, synthesized by variation in synthesis parameters) respectively. The turn-on field of the specimen D (similar to 0.17 V/mu m) is found to be quite superior than the value reported for other CdS nanoforms which is very remarkable. Simple way of bulk fabrication leads to the low turn-on value which indicates a possible use of the present emitter in the micro/nanoelectronics devices. (C) 2013 Elsevier Ltd. All rights reserved.

DOI10.1016/j.vacuum.2013.07.019
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)1.69
Divison category: 
Physical and Materials Chemistry