• K. Sreelatha
• C.A Jyothirmayee
• P. Paul Divakar
• N. Srinivasa Rao

Today, our nation is facing the urgent challenges of revitalizing our economy, strengthening our energy security and reducing greenhouse gas emissions. Solid-state lighting is an emerging technology with the potential to address all three of these challenges. Solid –state lighting (SSL) will mean greener homes and business that use substantially less electricity, making them less dependent on fossil fuels. In the coming decades, SSL will become a key to affordable high-performance buildings- buildings that consume less energy and produce a fewer greenhouse gas emissions than their counterparts. The Department of Energy (DOE) is committed to realizing the full potential of energy-efficient technologies such as solid - state lighting in meeting our nation’s challenges. The standard incandescent light bulb, which still works mainly as Thomas Edison invented it, converts more than 90% of the consumed electricity into heat. Given the availability of newer lighting technologies that convert a greater percentage of electricity into useful light, there is potential to decrease the amount of energy used for lighting in both commercial and residential applications. Although technologies such as compact fluorescent lamps ( CFLs) have emerged in the past few decades and will help achieve the goal of increased energy efficiency, solid-state lighting (SSL) stands to play a large role in dramatically decreasing U.S. energy consumption for lighting. Light emitting diodes, LEDs, provide point sources such as incandescent lamps while organic LEDs, OLEDs might replace area sources such as fluorescent lamps. Both LEDs and OLEDs are currently under development for niche markets in signalling and display applications. Last decade research led to LED based lighting to emerge as strong contender for the Mainstream Lighting (GLS, FTL and CFL) thanks to steep rise in efficiency (110Lumens/Watt) and steep fall in price (US Cent 0.7 per lumen).

LEDs Past trends, the future, current issues, new players, future demand.

"ADVANCES IN SOLID STATE LIGHTING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.136-138, June 2019, Available :http://www.jetir.org/papers/JETIR1907J22.pdf

"ADVANCES IN SOLID STATE LIGHTING", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp136-138, June 2019, Available at : http://www.jetir.org/papers/JETIR1907J22.pdf