Forward energy! The new technology could take the leftovers into the LED bulb

LED is there anything you don't like? This highly efficient, very long life of the light source is steadily erode the lighting market, so that inefficient, high temperature incandescent bulbs in the past.

University of Utah metallurgy engineering research professional Prashant Saswater (Prashant Sarswat) and assistant professor Michael Frey (Michael Free) professor found a method of production and utilization of food residue luminescent materials, LED light source means that future price drop sharply reduced. Can you make a light bulb from yesterday's leftover sandwiches and soda? They gave a positive answer.

Today's LED contains a quantum dot, a tiny, glowing crystal, usually made of cadmium selenide, which contains two toxic substances. Not only that, the price of cadmium selenide is also very expensive, 25 ml price of more than $500. Because of this, researchers began to look for alternatives. After some research, they came up with a good old material: carbon.

In order to develop "carbon quantum dots" instead of "quantum dots", the University of Utah team used spincrossover, the food residue into the solvent, in high temperature and high pressure environment for 90 minutes, until the formation of carbon quantum dots. Researchers at the University of Utah explained in a press release, they used a soft drink and a few pieces of bread and Cream Polenta Cake, in this experiment results show that in the process of generating carbon quantum dots, dissolved in soft drinks in the sucrose and fructose are the source of the effect is very good. Once the carbon quantum dots are formed, they can be placed in a clear resin to form a luminous object with a plurality of different optical properties.

"The synthesis and characterization of carbon quantum dots from food residues is a challenging task. Fundamentally, we need to determine the carbon quantum dot size, its diameter is only 20 nm or less, so we must through many tests to ensure that the carbon dots can be revealed, and it has the characteristics of the optical decision. "

The ultimate goal is to achieve mass production, the use of these LED in daily equipment. The successful use of existing waste is our ultimate goal. Sass Wouter said.

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