Investigations on synthesis and optical properties of metal and rare earth doped phosphors for led applications

Abstract

newline Liberalisation, Globalisation and Privatisation has led to a rapid rise in urbanization, demanding innovations in lighting and power consumption. Researchers are in a scramble for designing electrical fittings that consume less power and last longer in harsh environments. Policy makers and government agencies have also intensified their search for innovations in lighting in the past few years. For example, Chennai, which is world s second oldest municipal corporation after London, has started modernization of its streetlights in 33000 roads. It is challenging yet civic officials in Chennai have completed 40 percent of the project to commission Light Emitting Diode (LED) streetlights in the city. According to data from the Chennai Corporation in India, the power saving has improved by 50 percent in the past two years. However, the cost of installation was high, fuelling protests from civil society. There have been issues relating to damages caused to many of the 2.7 lakh streetlights during natural disaster such as Chennai floods in 2015 and Vardah Cyclone in 2016. As a result, Chennai Corporation has not been able to complete the modernization project of streetlights. Similar, challenges have been reported in all the cities in the world. Policy makers have urged researchers to innovate in the field of LED, producing hundreds of research papers, widening the scope of finding a solution to this problem faced by cities. Any major breakthrough in LED may save money for urban local governments, conserving power for industrial use, leading to economic growth and development. The world is in a pressing need of a number of researchers who dedicate themselves to research in LED. In a bid to promote innovation in LED, investigation of various aspects relating to luminescence is crucial. newline newline