The Turkey team has developed highly efficient LED, and the luminous efficiency has been greatly improved.

The Ko University University research team in Istanbul, Turkey, has developed an efficient LED. The researchers placed the quantum dots in the liquid directly in the LED device. The luminous efficiency is 50% higher than that in the solid state quantum dots.

The researchers used a transparent poly two methylsiloxane (PDMS) lens to cover the LED and injected liquid mixed with colloidal quantum dots into the lens for color conversion and luminescence. After injecting the liquid, the lens will automatically repair the hole and prevent the liquid from leaking out.

The researchers pointed out that when the quantum dots were removed from the liquid and used in solid form, the emission efficiency would be reduced. The efficiency of loss is called matrix effect. Through the liquid, high quantum yield and adjustable quantum dots, the researchers successfully suppressed the matrix effect.

Due to the reduction of matrix effect, the luminous efficiency is also greatly improved. In the LED with red, blue and green light sources, each tile can emit 64 LM, with green and blue LED as the light source, and each tile can reach 105 LM.

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