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A breakthrough in the efficiency of organic semiconductors

The Swedish researchers were able immediately to double the efficiency of organic semiconductors, this opens the way to wearable electronics and more efficient solar panels. Many of the technologies based on organic semiconductors, will finally become commercially viable.

The development of organic semiconductors has significantly accelerated in recent decades. One example of the application of this technology — OLED smartphone displays. However, the performance of organic semiconductors is still small, notes Science Daily.

The reason is the imperfection of doping — adding impurities to increase the conductivity.

The molecule of the additive receives from the organic semiconductor electron, which increases its conductivity. The more electrons can give the substance, the higher its conductivity. However, modern organic semiconductors capable of exchanging only one electron with each molecule impurities.

Researchers from the Technical University of Chalmers (Sweden) has developed technology of dual doping, in which each molecule of the additive is transferred not one but two electrons. This will make organic semiconductors are twice as efficient.

According to scientists, the development did not require a revolutionary discovery: it was enough to choose another type of polymer with lower ionization energy.

Double doping will make a technology based on organic semiconductors to be commercially viable. It is, for example, flexible electronics, bioelectronics and thermoelectric devices.

Another discovery in the field of organic electronics has made researchers from the technical University of Vienna. After four years of work, they first synthesized a polymer type S-PPV, which was previously known only in theory and was considered very promising. In comparison with existing analogues, it is more stable and conducts electricity.

As noted by Science Daily, the new polymer will be especially useful in the production of LEDs and solar cells. In addition, non-toxicity and biocompatibility make S-PPV is an ideal candidate for use in medicine.

According to experts at MIT Technology Review, flexible device will be one of the main trends of development of electronics in 2019. In addition, there will be wide spread wireless chargers, communication format and 5G smart headphones.

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