Studies on Hall Effect and DC Conductivity Measurements of Semiconductor Thin films Prepared by Chemical Bath Deposition (CBD) method

摘要

Semiconductors have various useful properties that can be exploited for the realization of a large numberudof high performance devices in fields such as electronics and optoelectronics. Many novel semiconductors,udespecially in the form of thin films, are continually being developed. Thin films have drawn the attentionudof many researchers because of their numerous applications. As the film becomes thinner, the propertiesudacquire greater importance in the miniaturization of elements such as resistors, transistors, capacitors,udand solar cells. In the present work, copper selenide (CuSe), cadmium selenide (CdSe), zinc selenideud(ZnSe), lead sulphide (PbS), zinc sulphide (ZnS), and cadmium sulphide (CdS) thin films were prepared byudchemical bath deposition (CBD) method. The prepared thin films were analyzed by using Hall measurementsudin Van Der Pauw configuration (ECOPIA HMS-3000) at room temperature. The Hall parametersudsuch as Hall mobility of the material, resistivity, carrier concentration, Hall coefficient and conductivityudwere determined. The DC electrical conductivity measurements were also carried out for the thin films usingudthe conventional two – probe technique. The activation energies were also calculated from DC conductivityudstudies.