A study of hot wall evaporation System and characterization of CDTE and CDSN3TE4 thin films

Abstract

Currently the world consumes an average of 13 terra watts TW of newlineelectric power by the year 2050 this amount is likely to be 30 TW If this newlinepower is obtained from fossil fuels the concentration of CO2 liberated will be newlinedouble that of the present level causing substantial global warming along newlinewith many other undesirable consequences The present scenario is in urgent newlineneed of an efficient means of harvesting energy and it should be used in all newlineappliances and places Photovoltaic power generation is one of the best suited newlinemethods and it has several advantages notably that it does not produce any newlineharmful pollutants since the sun deposits 1 20 000 TW of radiation on the newlineearth At present more than 95 of crystalline Silicon solar cells are in use newlinebut the cell efficiency is less and the cost is high In order for solar cells to newlinebecome more widely adopted it is necessary to either bring down its cost or newlineincrease its efficiency through use of new designs For environmental newlinemonitoring military security and process control Infra red sensors are mostly newlineused for the conversion of direct or reflected infra red radiation into electrical newlinesignals to collect necessary details A through understanding of deposition newlineprocessing conditions and mechanisms of atomic processes that take place newlineduring deposition of thin film is essenti newline