One of the most acute problems of modern displays – the degradation of blue LEDs in the process of exploitation, which ultimately leads to deterioration of picture quality. A team of experts from the National research technological University “MISIS” proposed a new modification of the led, solves the problem of burn-in screens in smartphones and televisions.
New development of Russian scientists based on perovskite thin-film devices. Scientists have created a new modification of the led, for the first time by applying two-dimensional inorganic material as the electron transport layer perovskite LEDs.
Perovskite materials – the young class of semiconductors, which opens wide opportunities to reduce the cost of bright displays and a number of optoelectronic elements, such as solar cells, lasers, photodetectors, and light emitting diodes (LEDs). Feature of perovskites is called low cost and longer service life compared with traditional LEDs.
Development of perovskite LEDs, which were first applied to two-dimensional zirconium trisulfide was carried out under the leadership of candidate of technical Sciences, Dmitry Muratov. Indicates that a two-dimensional material applied as an alternative to traditional organic layers of the led device. The layer was formed by an industrial method slot-matrix printing, which allows you to quickly implement the technology in series production.
“At a certain stage of research the question inevitably arises: does the development for implementation in serial production? Experience the world Assembly of perovskite LEDs is reduced to a layer-by-layer Assembly of components by applying a precursor on a rotating glass substrate. This allows you to achieve homogeneity of layers, but it is not suitable for mass production – this approach does not provide for simultaneous loading of multiple samples,” says researcher of the laboratory of advanced solar energy nust “MISIS” Arthur Isaev.
At the moment scientists are actively adopting the technology of applying perovskite, by analogy with the industrial methods of the semiconductor industry. In the future this will allow to start mass production of light emitting diodes of a new type, as well as to solve the problem of degradation of led displays,