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Graphene will allow the development of screen OLED flexible and efficient

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From Korea, specifically the KAIST or Avanzdo Institute of science and technology, we get information about the work of a certain group of scientists that has managed to create diode OLED extremely flexible and with a very high efficiency thanks to, among other things, to the use of Graphene in its manufacture. As he is confirmed, this development is a breakthrough to get produce ultra-thin and ultra-light roller screens, something the market waiting for quite some time and that will soon arrive.

Going a bit more into detail, let you know that a diode OLED is nothing more than an organic light emitting diode. Have this meaning? Basically we are before a diode that contains a layer electroluminisciente consisting of a film of organic compounds that react to a given electrical stimulation in a way that they generate and emit light themselves. Thanks to this characteristic, each pixel is capable of displaying emit light without the need for rear light which allows, among other things, that you can create screens more thin, cheap and even easy to fabricate by comparing them with those used LED technology.


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After several months working in this new type of diode OLED with Graphene, responsible for the project have managed to optimize its manufacturing and operation so now display much more flexible to its energy efficiency is higher. For this has been placed a thin sheet of Graphene as a transparent electrode located just between the layers of polymer chute, and titanium dioxide.

Entering a little more in detail in the paper on the research it says that basically diodes OLED always there is a transparent electrode which is responsible for allowing the release of energy in the form of photon, depending on precisely this transparent electrode release may be from the top or bottom zone. Bottom release conventional diodes used an transparent composite anode and indium tin oxide, this is precisely the material which would have been replaced by Graphene.

On the other hand, a moment ago were talking about optimization, this theme responds to the proposal made by these researchers through the, and to make the maximum possible efficiency of Graphene, it has manufactured a transparent anode which is located between the conductive polymer and titanium dioxide layers in such a way that the reflectance is increased significantly. Thanks to this new type of architecture, has been that the panel OLED built is a 40′ 8% more efficient.

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