ISSN:
1057-9257
Keywords:
CdTe
;
thin films
;
ethylene-glycol bath
;
photocurrent
;
flat-band potential
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
CdTe films were deposited on Ni and conducting glass (SnO2) substrates from an ethylene-glycol-based bath by galvanostatic and potentiostatic methods. The film composition and electrical properties depend on parameters such as working electrode potential current density, deposition temperature, substrate type and post-deposition treatments. It is possible to improve the grain size and stoichiometry of the film by post-deposition heat treatment in air. The conductivity type was determined from the photocurrent-working electrode potential behaviour of the film. Dark capacitance measurements in a 0.5 M H2SO4 solution at 10 kHz showed a linear behaviour, from which the flatband potential Vfb= -0.365 V vs. a saturated calomel electrode (SCE) and the doping density ND = 1.35 × 1018 cm-3 were determined. © 1997 John Wiley & Sons, Ltd.
Additional Material:
10 Ill.
Type of Medium:
Electronic Resource
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