THE STUDY OF STRUCTURAL AND ELECTRICAL PROPERTIES OF LEAD SULPHIDE (PbS) THIN FILM DEPOSITED THROUGH CHEMICAL BATH DEPOSITION
ABSTRACT
Lead sulfide (PbS) thin films were prepared on glass substrates at room temperature by chemical bath deposition (CBD) technique. The influence of dip times on the lead sulphide (PbS) thin films deposited on glass slide substrates via chemical bath deposition (CBD) technique using chemical precursors, nitrate Pb(NO3)2, and thiourea SC(NH2)2, and sodium hydroxide (NaOH) at room temperature was investigated. The thicknesses of the layers were measured as the structural property, the thickness of , and were obtained for the time deposits of 60, 80, and 100 minutes respectively. The charge carrier mobility µ was studied as the electrical properties and the charge carrier mobility (µ) of , and for the time deposits of 60, 80 and 100 minutes respectively.
CHAPTER ONE
INTRODUCTION
1.1 Background of the Study
In view of the rapid depletion of existing conventional energy resources, due to the high rate of consumption the world over, it‟s obvious that mankind is heading towards an energy crisis. Today energy consumption per capita is synonymous with the standard of living of a nation and raise world population, standard of living of developed and developing nation and the trend towards higher technologies on the increases. It is evident that our oil wells, the source of the world well-known major energy resources petroleum will sooner or later dry up. To avert this impending energy crisis and further meet up with energy needs of nations, renewable energy technological revolution is the only answer. (Cosmas, 1989).
Renewable energy source that can be developed include non-exhaustible energy source such as sunlight, ocean currents, waves, falling water, wind natural energy stocks whose replenishment is far greater than projected human use. Of this wide range of energy choice, sunlight, or solar energy is certainly one of the most attractive. Since the solar energy is more abundant in the poorer and less developed countries of the world, it is hoped that if this particular source of energy is researched into a developed the bridging of the technological gap between the third world countries and most of the developing countries is then feasible.
