SYNTHESIS AND CHARACTERIZATION OF PbS NANOSTRUCTURES TO COMPARE WITH BULK

Abstract

Simple chemical reduction route is taken for growth of PbS nanostructure by using ethylene-diamine (EDA) as capping agent. Anhydrous lead chloride, sulphur, NaBH4 is taken as reactants. Different types of nanostructures are obtained by varying growth time and temperature. The room temperature synthesis of PbS nanoparticles in EDA medium produces high quality nanocrystals as shown by electron microscopy, optical and fluorescence measurements. It is observed that nanoparticles are larger in size for longer growth time as well as higher temperature. Structural and optical properties show that quantum confinement of PbS nanoparticles is good in EDA medium.

Physical properties of nanocrystaline PbS synthesized by electrolytic method

“…In recent years, interest in the development of semiconductor nanostructured materials has been growing rapidly due to their unique physical and chemical properties [6][7][8][9][10][11][12]. This is due to their potential application in the field of solar cells of a new generation, optoelectronic devices, photoconductors, sensors, and infrared detector devices.…”

“…The possibility of multiphoton absorption in PbS is extremely useful for the efficiency increase of photoelectronic devices [10]. PbS has a huge potential also in the field of electrochemical biosensors, as well as effective antimicrobial drugs [6,11].…”