Electrochemical Growth and Studies of Indium-Rich CuInTe2 Thin Films
Dixit Prasher,
Kavita Dhakad,
Ashok k. Sharma,
Vikas Thakur,
Poolla Rajaram
Issue:
Volume 3, Issue 1, January 2014
Pages:
1-5
Received:
8 November 2013
Published:
30 December 2013
Abstract: CuInTe2 thin films were electrochemically deposited on fluorine-doped tin oxide (<10 Ω/□) coated glass. The electrochemical bath used for the electrodeposition of CuInTe2 thin films consisted of aqueous solution mixture of 0.025 M CuCl2, 0.1 M InCl3 and pre-reacted 0.01M tellurium with HNO3.Linear and cyclic sweep voltammograms were analysed to find out the suitable deposition potentials and growth parameters. Acetronitrile was added as a supporting electrolyte and growth was carried out at the constant deposition potentials of -350 mV and - 450 mV with and without stirring. X-ray diffraction (XRD) results obtained in this work show films that were grown under stirring conditions are more oriented in the (112) direction. CuInTe2 were also analyzed by scanning electron microscopy (SEM) and energy dispersive analysis of X-rays (EDAX). SEM study revealed the formation of uniformly covered nanoflakes of 40-50 nanometers in width and compositional analysis show that CuInTe2 film grown had an excess of indium content, but (Cu %+In%):Te% is close to stoichiometry.
Abstract: CuInTe2 thin films were electrochemically deposited on fluorine-doped tin oxide (...
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Phonon Confinement Using Spirally Designed Elastic Resonators in Discrete Continuum
Sourav Banerjee,
Riaz Uddin Ahmed
Issue:
Volume 3, Issue 1, January 2014
Pages:
6-13
Received:
7 December 2013
Published:
10 January 2014
Abstract: Periodic and chiral orientation of microstructures, here we call phononic crystals, have extraordinary capabilities to facilitate the innovative design of new generation metamaterials. Periodic arrangements of phononic crystals are capable of opening portals of non-passing, non-dispersive mechanical waves. Defying conventional design of regular periodicity, in this paper spirally periodic but chiral orientation of resonators are envisioned. Dynamics of the spirally connected resonators and the acoustic wave propagation through the spirally connected multiple local resonators are studied using fundamental physics. In present study the spiral systems with local resonators are assumed to be discrete media immersed in fluid. In this paper it is assumed that acoustic or ultrasonic waves in fluid are propagated along the plane of the spiral resonators and thus only the longitudinal wave mode exists due to nonexistence of shear stress in the fluid. Lagrangian formulation of the spiral systems were employed to obtain the governing Euler-Lagrange equation of the system. Discrete element method was employed to verify the equation assuming nearest neighboring effect.
Abstract: Periodic and chiral orientation of microstructures, here we call phononic crystals, have extraordinary capabilities to facilitate the innovative design of new generation metamaterials. Periodic arrangements of phononic crystals are capable of opening portals of non-passing, non-dispersive mechanical waves. Defying conventional design of regular per...
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