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Author Swaminathan, V. ♦ Subramanian, V. ♦ Murali, K. R.
Source CSIR-Central Electrochemical Research Institute
Content type Text
Publisher Elsevier BV
File Format PDF
Copyright Year ©2000
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Physical chemistry
Subject Keyword Electrochemical Materials Science
Abstract In this paper we report the results on pulse electrodeposited cadmium selenide thin films using microprocessor control. The as-deposited and heat- treated films were characterized by X-ray diffraction, scanning electron microscope and optical absorption studies. Polycrystalline CdSe films obtained by pulse electrodeposition indicated both cubic and hexagonal structures whose lattice constants agree well with the standard values. An average grain size of 3 mm and an absorption coef�cient of 104 cm21 were obtained by SEM and optical studies. The power conversion ef�ciency for an illumination of 80 mW cm2 in 1 M polysulphide was in the range of 1.75�2.4% for the films plated at different duty cycles. A peak quantum ef�ciency of 0.75 was obtained at 725 nm. Acceptor concentration of 1:6 � 1016 cm23, electron mobility of 5.63 cm2 V s, and minority carrier diffusion length of 0.185 mm have been obtained.
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2000-01-01
Journal PeerReviewed