Luxsky Lighting Co.,Limited

Tel:0086-755-82590839
Contact US
Address: C&H Building, Wanda Industrial Park, Shiyan Town, Bao'an district, Shenzhen City, China
TEL: +86-755-82590839
+86-755-33654459
FAX : +86-755-33654451
Home > Exhibition > Content
In the field of LED discovery: reversible hydrogen can achieve high efficiency OLEDs
- Jul 20, 2017 -

In any field, research and exploration on new technology of industry scientists are always relentless in their pursuit? Recently in the field of LED has a big discovery! Reversible hydrogen can achieve efficient OLEDs!

New research has found that molecules that change their chemical structure slightly before and after launch can provide a novel and stable way to achieve efficient oleds.

 

The researchers studied mechanisms involving the reversible transfer of hydrogen atoms-the transfer of their cation nuclei-from one atom in the emitter to another atom in the same molecule, in order to create an environment conducive to thermally activated delayed fluorescence (TADF).

The current molecular design of TADF materials focuses on the combination of donor and receptor units. But researchers at the Center for Organic Photon and electron research at Kyushu University in Japan have proposed a method based on the intramolecular proton Transfer (ESIPT) in the excited state to achieve effective TADF without relying on the donor-acceptor scheme.

LED Panle.jpg

When the emitter is stimulated by optical or electrical energy, the esipt occurs spontaneously.

Quantum chemistry calculations by researchers show that TADF is unlikely to occur until the hydrogen atom is transferred. After hydrogen is transferred to different atoms in the same molecule, this creates a molecular structure capable of producing TADF. After the molecule emits light, the hydrogen shifts back to its initial atom. The molecule is then ready to begin repeating the process.

Esipt leads to the separation of the highest occupation and the lowest molecular orbital, thus achieving the luminous efficiency of TADF emission near 60%. The high external electroluminescent quantum efficiency of OLEDs using the emitter is up to 14%, indicating that an effective triplet harvesting effect can be achieved using TADF materials based on Esipt.

The researchers said it was the first demonstration of an efficient TADF observed inside and outside the device.

The molecules used in this study were initially synthesized to produce light absorbing pigments.

The study could expand and accelerate the development of various TADF materials for high-performance OLEDs.

It is only now beginning to explore the advantages of this design strategy, but one particularly promising area is related to its stability. It is known that molecules similar to this study are highly resistant to degradation, so researchers hope these molecules can help improve oleds life.

Best selling products:Emergency Lighting LED Panels,LED Color Dimming CCT Panel Light With 40W By CV 24V Lighting Solution,LED CCT 2800-6500K Temperature Change And Dimming Panel Light With 40W, 48W,60W By CC Lighting Solution,White Aluminum Profile LED Microwave Motion Sensor Panels 18W/6W/40W/48W Light With TUV CE& RoHs,LED Panel Light With Daylight Sensor Function By White Profile 18W/36W/40W/48W/60W TUV CE,600x1200 2'x4' 72W UL LED Panel Light GL-PL6012 (600x1200 2'x4'UL LED Panel Light)