Physical properties of Ag-doped cadmium telluride thin films fabricated by closed-space sublimation technique

2006 ◽  
Vol 290 (2) ◽  
pp. 452-458 ◽  
Author(s):  
N. Abbas Shah ◽  
A. Ali ◽  
A.K.S. Aqili ◽  
A. Maqsood
2005 ◽  
Vol 284 (3-4) ◽  
pp. 477-485 ◽  
Author(s):  
N. Abbas Shah ◽  
A. Ali ◽  
Z. Ali ◽  
A. Maqsood ◽  
A.K.S. Aqili

2017 ◽  
Vol 6 (2) ◽  
pp. 235-240 ◽  
Author(s):  
C. Selvakumar ◽  
T. Venkatachalam ◽  
E. Ranjith Kumar ◽  
K. Thangavel

2015 ◽  
Vol 33 (2) ◽  
pp. 381-390 ◽  
Author(s):  
Wajeeha Usman ◽  
Asghari Maqsood

AbstractIn the present study, bismuth (Bi) thin films having thickness of 335 nm have been deposited onto a glass substrate by closed space sublimation (CSS) technique. Besides this, spontaneous growth of Bi nanorods has also been investigated for the first time, without template and catalyst assistance in a substrate temperature range of 380 to 430 °C using CSS technique. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to investigate microstructure, morphology and roughness of the Bi nanorods. The diameter and length ranges of Bi nanorods were 80 to 400 nm and 3 to 5 μm, respectively. Moreover, they exhibited a rhombohedral structure with a dominant peak indexed at (012), (104), and (110). The mass percentage of Bi, determined by energy dispersive X-ray (EDX), was 99.93 %. The studies of electrical resistivity, Hall coefficient, magnetoresistivity, hole mobility and carrier concentration of Bi thin films were performed at 300 to 350 K and the electrical properties were found to be a function of temperature. The basic aim was to investigate the spectacular evolution of Bi nanostructures on as-deposited thin films and effects of thickness on their structural, electrical and dielectric properties. Detailed examination of SEM micrographs eliminated all other growth modes except self-catalytic tip growth by Vapor-Solid (VS) growth process which is believed to provide the driving force for spontaneous nanorod growth at high substrate temperature. Deposition of thinner Bi films provided a new possibility for fabrication of Bi nanorods of high quality.


2008 ◽  
Vol 43 (5-6) ◽  
pp. 639-644 ◽  
Author(s):  
S. Larramendi ◽  
E.M. Larramendi ◽  
K. Gutiérrez Z-B ◽  
M. Hernández-Vélez ◽  
J.M. Martínez Duart ◽  
...  

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