AIP Conference Proceedings [AIP Publishing ADVANCES IN BASIC SCIENCE (ICABS 2019) - Bahal, India (7–9 February 2019)] ADVANCES IN BASIC SCIENCE (ICABS 2019) - Photoluminescence and chromaticity properties of CdSe nanobeads made by a complexing agent assisted hydrothermal method for LEDs and laser applications

摘要： CdSe nanosbeads have been synthesized using a complexing agent assisted hydrothermal method. It is found that the presence of complexing agent (Oleic acid) plays a key role in the formation of nanobeads. The structural, morphological and optical properties of CdSe nanoparticles have been investigated. The obtained nanobeads of cadmium selenide are of wurtzite structure. It is inferred that the nucleation and agglomeration of nuclei is a major reason of the formation of nanobeads. The optical results show the obtained band gap is blue shifted from the bulk value and the photoluminescence and chromaticity spectrum show that the prepared CdSe nanobeads are yellowish green color emitters and useful for yellowish green LEDs and lasers.