Perovskites can extend the life of gadget screens

The screens of many modern smartphones "suffer" burnout pixels. Due to the presence of an organic component in matrices such as OLED (and their derivatives) with long-term “highlighting” of the same icons on the screen, the pixels begin to degrade. While manufacturers advise users to periodically change the screen interface, rearrange the icons in places and regularly update the screen saver. In fact, the problem can be solved: for this it is necessary to minimize the use of organic components in the matrix of screens. The team of scientists of NUST “MISiS”, engaged in the development of perovskite thin-film devices, proposed a new modification of the LED, for the first time using two-dimensional inorganic material as the electron transport layer of the perovskite LED.

An article on development published in the journalApplied Materials & Interfaces .



Perovskite materials are a young class of semiconductors that offers ample opportunities to reduce the cost of bright displays and a number of optoelectronic elements, such as solar panels, lasers, photo detectors and light emitting diodes (LEDs). The use of perovskites, in particular, for the production of LED screens for telephones or televisions can significantly reduce the cost of production and extend their service life.

The scientific team of the Laboratory of Advanced Solar Energy NUST “MISiS” has developed a perovskite LED in which two-dimensional zirconium trisulfide was used. This is the first time that two-dimensional material has been used as an alternative to the traditional organic layers of an LED device. The layer is formed by the industrial method of slot matrix printing, which will quickly adapt the technology for mass production.

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Scientists are working on adapting perovskite application technology by analogy with industrial methods of the semiconductor industry. This will eliminate the disadvantages of fading organic LEDs in modern displays by replacing with stable perovskite diodes.

By the way, for the development of new thin-film perovskite optoelectronic devices, scientists became laureates of the annual prize of the Moscow Government to young scientists in the field of science and innovations for 2019.

Source: https://habr.com/ru/post/undefined/