Effect of pulse reversal on the properties of pulse plated CdSexTe1−x thin films View Full Text


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Article Info

DATE

2002-10

AUTHORS

K.R. Murali, V. Swaminathan

ABSTRACT

CdSexTe1−x thin films with 0 < x < 1 were deposited on titanium and conducting glass substrates by pulse electrodeposition using microprocessor control. Formation of the solid solution takes place for values of x(0 < x < 1). The films were characterized by X-ray diffraction. While the as-deposited films are cubic in nature, those annealed at 475 °C in air indicate hexagonal structure and the lattice parameters increase with increasing value of x. From the optical absorption measurements the band gap of the material was calculated. The value of the band gap varies from 1.42 to 1.70 eV as x varies from 0 to 1. The photoelectrochemical (PEC) characteristics were obtained for all compositions of CdSexTe1−x (x = 0–1). The output parameters for CdSe0.66Te0.34 with 9% duty cycle at an intensity of 80 mW cm−2 using 1 M polysulphide as the redox electrolyte, are VOC of 398 mV, JSC of 5.59 mA cm−2, ff of 0.45, η of 4.73%, Rs of 13 Ω, Rsh of 1.50 kΩ. The output parameters were found to increase with 60 ms pulse reversal. After photoetching for 40 s, a VOC of 481 mV, JSC of 16.00 mA cm−2, ff of 0.57, η of 5.46%, Rs of 6 Ω, Rsh of 2.16 kΩ were obtained. More... »

PAGES

1151-1156

References to SciGraph publications

  • 1999-07. Characteristics of synthesized CdSeTe powder in JOURNAL OF MATERIALS SCIENCE
  • 1986-03. Electrodeposited CdSe0.5Te0.5: Photoelectrochemical solar cells in JOURNAL OF APPLIED ELECTROCHEMISTRY
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    http://scigraph.springernature.com/pub.10.1023/a:1021243419966

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    http://dx.doi.org/10.1023/a:1021243419966

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