LED lighting for homes have been around for a while. As much as manufacturers may advertise the durability, energy and bill saving benefits of using LED lights, the cost discourages people from investing them. Now scientists have developed an efficient alternative material used in traditional LEDs, which could potentially reduce their cost as well as further reduce energy use.
Nanoscale crystalline substances known as perovskite are used in LEDs as well as in other commercial goods like lighting, lasers and television and computer screens. However, currently these nanoparticles lack the ability to create uniform and bright nanoparticle perovskite films, thus reducing their potential. According to The Indian Express, researchers from Princeton University in the US have developed a technique in which the perovskite self-assemble to produce more efficient, stable and durable perovskite-based LEDs. Barry Rand, assistant professor at Princeton explains their technique,
Our new technique allows these nanoparticles to self-assemble to create ultra-fine grained films, an advance in fabrication that makes perovskite LEDs look more like a viable alternative to existing technologies.”
When Rand tested his thin nanoparticle-based films he discovered they are able to control the current that passes through thus enabling the LEDs to operate more efficiently. Perovskites represent a potentially lower-cost alternative to gallium nitride (GaN) and other materials used in LED manufacturing. Needless to say, if LEDs cost less, more people will be encouraged to swap out their energy consuming incandescent bulbs for environmentally beneficial LEDs.
Researchers have also found that an additional type of organic ammonium halide and in particular a long-chain ammonium halide applied to the perovskite solution during producing created smaller crystals. These consequently produce thinner and smoother halide perovskite films which result in more efficient LEDs. Our environment has never been under greater threat from global warming and climate change. Any change we can make in our habits like using energy efficient lights and electricals will help.