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Photoelectrochemical study of screen-printed cadmium sulphide electrodes

✍ Scribed by Y. Ramprakash; V. Subramanian; R. Krishnakumar; A.S. Lakshmanan; V.K. Venkatesan

Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
593 KB
Volume
24
Category
Article
ISSN
0378-7753

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✦ Synopsis

Thin films of CdS have been prepared by the screen-printing technique. Optical absorption studies reveal a band gap of 2.42 eV. Current-voltage studies at the CdS-(1 M NaOH-0.1 M NazS-0.1 M S) interface yield an exchange current density of 6 X 10m6 A cmm2 and a junction ideality factor of 2.8. Mott-Schottky plots at 0.4, 1.0, 2.0 and 4.0 kHz show a flat-band potential of -1.07 V (SCE). At 84.5 mW cmw2 tungsten-halogen illumination, the photoelectrochemical cell gives an open-circuit voltage of 0.32 V, a short-circuit current density of 0.23 mA cme2, and a fill-factor of 0.42.

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