The new LED makes it possible for a new generation of lighting systems

According to Lei Feng net, quantum dots have experienced important moments. Last month, Samsung's first quantum TV officially shipped, production is gradually increasing, which means that 15 years ago, the commitment seems to have been achieved.

Now researchers at the Hiroshima University in Japan have used silicon based quantum dots for the development of a new type of light-emitting diode, promising that it will be a new revolution in the history of lighting systems. The researchers have created an inorganic / organic hybrid light emitting diode that emits blue and white light through a quantum dot. The blue white LED gives us a new generation of free lighting and display lighting systems.

In "Applied Physics" (Applied Physics Letters) a research report published, researchers said that this kind of quantum dots and their voltage led only 6 volts can be light, light and effective amount of 78% from silicon quantum dots.

In order to let you know how to make these numbers is calculated, about 6 years ago, for the most advanced optical efficiency of quantum dot light-emitting diodes by more than 90% reduced to about 15%, because these dots must be loaded into a conductive organic thin film, to.

These Japanese researchers also said that their LED generated input and output power density is 280 and 350 times as much as previously reported devices. These quantum dot based LED input and output power density is so high, because these hierarchical structures are optimized to some extent, so as to better realize the carrier transfer.

The actual physical size of the LED can provide an effective area of 4 mm2, which is 40 times the typical commercial LED. In addition, the thickness of this LED is only 0.5 millimeters.

Perhaps the most intriguing aspect of the investigation is that the new LED is produced by a solution process that requires room and room pressure.

The fabrication process involves selecting a glass substrate and then pouring some conductive polymer solutions and colloidal silicon quantum solutions onto it.

"Quantum dot LED, as the next generation of LED, has attracted a lot of attention," adds Ken-ichi Saitow, a professor and research leader at the Hiroshima University. Although some breakthroughs are needed for its successful application, the quantum dot hybrid LED will be far more successful than we expected."