Blue Light LED (An invention that filled up the world with light)

Three scientists have together attained the Nobel Prize in physics their work on blue LEDs, or light-emitting diodes.


In the year 2014, Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura were awarded the Nobel Prize in Physics for the invention of the blue Light Emitting Diode (LED). The reason for blue in particular is that the blue was the last and most troublesome barrier needed to form white LED light. And with white LED industries can produce the inventions like revolutionary smartphone and digital screens for computer, These Light Emitting Diodes (LEDs) can last longer and consume less electricity than any conventional bulbs.



LEDs are semiconductors that are engineered so that they emit light when an electron passes through it. Various chemicals offer different LED colors. Engineers created the very LEDs between the early 1950s and 60s. Early procedures enclosed laser-emitting devices that worked only when liquid nitrogen bathed. The scientists started developed LEDs that emit everything from green light to infrared light, but they could not achieve to get blue color light, which required dangerous chemicals carefully-created crystals as well that are unable to make in the lab.



Once they did finds out the solution, the results were remarkable. A contemporary white light LED bulb converts almost 50% of the electricity to utilize as light. Compare to that incandescent bulbs converted only 4% and the result is that, an economical bulb is invented. Not only saving cash and electricity for everyone, but white LEDs also have a wealthy potential to serve people who are suffering with no electricity. Installing a solar panel will charge an LED lamp to last an extended time, it helps children to study and also helping the businesses to continue during the night time.



LEDs can continually last up to a one hundred thousand (100,000) hours, where fluorescent lights last only ten thousand (10,000) hours and incandescent bulbs last only thousand (1,000) hours for. Changing every building and home in the globe to LEDs will drastically cut back the lighting consumption, thus reduction in the world's electricity and materials consumption.



In the event of making a white LED light, blue-colored light is an essential light. Engineers make white light by making use of some fluorescent chemicals with blue LEDs and resulting in white light.




Isamu Akasaki and Hiroshi Amano worked on the research to invent high-quality gallium nitride alloys to layer up in the blue LED to emit the light efficiently. Gallium phosphide was used in green and red LEDs because of its easier production. Amano and Akasaki discovered the way of adding chemicals to gallium nitride semiconductors in for better efficiency.



Shuji Nakamura also worked on high-quality gallium nitride but he has done the research to find out the reason for the application for using gallium nitride particularly helps in semiconductors to glow and creates his structures based on gallium nitride alloy.



The committee for the Nobel Prize in physics specified that Akasaki's and Nakamura's team will continually work on creating blue LEDs with more efficiency. Nakamura is now working as a professor at the University of California, Santa Barbara, he started LED research at Nichia Chemical Corporation (A small Japanese chemical company). 



Amano and Akasaki are working as professors at Japan’s one of the top university named Nagoya University.


Advanced Lighting Technology


 With the evolution of smartphones, Smart homes have become very common these days. Smart mirrors, showers, appliances, and lights are kind of inevitable households these days. With the latest smart lights, our smartphone can connect to bulbs through Wi-Fi or Bluetooth. Then smart bulbs are controlled by Mobile apps. These smart bulbs can various tasks like choose the color (a common selling smart bulb can change into 16 million colors), adjust brightness, turn on/off or dim automatically and also schedule or even notify you with a flash when you get a Facebook or Instagram notification. Due to the high convenience, safety, and energy management, these smart light bulbs have high market demand.