The Nobel Prize is the most important and prestigious prize in the world for people of science. Whole decades go into creating or researching the things and processes that may deserve it. If you ask those who live by the dream of a Nobel Prize what sights there are in their city, they will sooner talk about the Nobel laureates who were born and live there than about the city's historic places.
Isamu Akasaki, Shuji Nakamura and Hiroshi Amano received 1 million dollars for creating LED lamps (blue light-emitting diode lamps). This is a real breakthrough in artificial light, since it is blue LED lamps that are cheap, economical and bright.
In addition, the Japanese scientists used red and green light-emitting diodes (which had been invented long before) together with blue ones, and obtained white light. It is precisely the white light of smartphones, and the light when they are switched on, that is based on light-emitting diodes.
Many people ask the question – was it really so hard to create a blue light-emitting diode? The answer is yes. The point is that the material for LEDs is wide-gap semiconductors, which are very hard to work with in making the necessary structures.
The blue light-emitting diodes created by the Japanese can work for up to 100 thousand hours. Together with diodes of other colours they are widely used in displays and lighting devices. Such light-emitting diodes are also used in lamps of a new type – they excite phosphorus compounds, which in turn activate green and red photons, which, combining with the blue, give white light. Their efficiency can exceed 50%. For now the cost of making them is higher than that of ordinary light bulbs, but, given the demand and the growth in popularity, their price is gradually falling.
Thus the discovery of the Japanese scientists is a real way to save globally.
Another way to save globally
Traditionally, on 10 December, the day Alfred Nobel died, the Nobel Prize is presented. In 2014 in Stockholm the prize was presented by the King of Sweden. And in physics it was won by Japanese scientists.Isamu Akasaki, Shuji Nakamura and Hiroshi Amano received 1 million dollars for creating LED lamps (blue light-emitting diode lamps). This is a real breakthrough in artificial light, since it is blue LED lamps that are cheap, economical and bright.
In addition, the Japanese scientists used red and green light-emitting diodes (which had been invented long before) together with blue ones, and obtained white light. It is precisely the white light of smartphones, and the light when they are switched on, that is based on light-emitting diodes.
Many people ask the question – was it really so hard to create a blue light-emitting diode? The answer is yes. The point is that the material for LEDs is wide-gap semiconductors, which are very hard to work with in making the necessary structures.
The blue light-emitting diodes created by the Japanese can work for up to 100 thousand hours. Together with diodes of other colours they are widely used in displays and lighting devices. Such light-emitting diodes are also used in lamps of a new type – they excite phosphorus compounds, which in turn activate green and red photons, which, combining with the blue, give white light. Their efficiency can exceed 50%. For now the cost of making them is higher than that of ordinary light bulbs, but, given the demand and the growth in popularity, their price is gradually falling.
Thus the discovery of the Japanese scientists is a real way to save globally.