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Author Murali, K. R. ♦ Swaminathan, V.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Springer Verlag
File Format PDF
Copyright Year ©2002
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Physical chemistry
Subject Keyword Electrochemical Materials Science
Abstract CdSexTe1x thin filmswith 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 filmswer e characterized by X-ray diffraction. While the as-deposited filmsare 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 variesfrom 1.42 to 1.70 eV as x variesfrom 0 to 1. The photoelectrochemical (PEC) characteristics were obtained for all compositions of CdSexTe1x (x ¼ 0–1). The output parametersfor CdSe0.66Te0.34 with 9% duty cycle at an intensity of 80 mW cm2 using 1 M polysulphide as the redox electrolyte, are VOC of 398 mV, JSC of 5.59 mA cm2, ff of 0.45, g of 4.73%, Rs of 13 X, Rsh of 1.50 kX. The output parameterswere found to increase with 60 ms pulse reversal. After photoetching for 40 s, a VOC of 481 mV, JSC of 16.00 mA cm2, ff of 0.57, g of 5.46%, Rs of 6 X, Rsh of 2.16 kX were obtained.
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2002-01-01
Journal PeerReviewed