According to British media reports, organic light-emitting diodes, such as those used in lighting, are many times more powerful than conventional light bulbs. Install it on the clothes and the color of the clothes can be changed at will. Installed on a beverage bottle, you will get the latest sports news. The soft and soft nature of this illuminating device will enable the birth of a photovoltaic display that can be loaded on any material. Currently, OLEDs are only used in some mobile phones and MP3 display screens, but if they are used on large-screen displays such as color TVs and computers, their life span is only a few months. However, scientists believe that with the popularity of plastic films that can conduct electricity and produce solar energy, clothing design and home lighting will also undergo a radical change.
The research team is coordinated by Alison Walker, a professor of physics at the University of Bath in the UK. He said: "This is a long-term project that condenses the contributions of many researchers. We expect it to succeed. Although researchers use various methods to test the effectiveness of this device, it is still difficult to draw a clear conclusion until now. ."
According to a spokesperson, the development of OLEDs stems from the special properties of some polymers discovered 15 years ago, which, depending on the design of the device, converts current into light or converts light into electricity. Because these polymers are light and soft, they can be used in a range of applications, such as transparent windows. It looks like a normal window during the day, but when it is dark, as long as the switch is turned on, the entire window will glow and be more traditional. Light bulbs or energy-saving bulbs are more efficient and less expensive.
Walker pointed out: "The project will use theoretical research on computer models. We must do everything we can to reduce energy costs. Therefore, it is imperative to design such a cheap, efficient and durable device." The body is composed of a molecular chain, and because it contains carbon, it is called an organic substance. The boundary formed by the injection of electrons and holes into the polymer film is called an electron-hole pair, and the electron holes collide with the current, and light is generated.
The mathematical technique used by Walker is called Monte Carlo analysis, which simulates the trajectories of electrons, holes, and electron-hole pairs in a film by random numbers generated by a computer. Such results can be used to calculate images of chemical structure and impurities versus device performance. Chemists can use this data to design more efficient materials. Researchers will conduct research at the molecular level to observe the performance of the entire device. These studies will also help to better understand polymer materials used in plastic electronics applications, such as electronic paper and smart grocery labels.
It is reported that this team called Modecom consists of 13 teams from 9 universities and 2 companies. A total of scientists from the United Kingdom, the United States, China, Belgium, Italy and Denmark participated in the study.
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An international research consortium led by British scientists is now implementing a three-year, £850,000 research project to explore a more solid theoretical foundation for the use of organic light-emitting diodes (OLEDs) to ensure energy. Efficient use, so that this device can be truly marketized at an early date. Scientists say this is a project with far-reaching scientific implications that will reduce global lighting costs by $1 billion a year.
October 14, 2018