Organic Semiconductors Can Compete With Silicon Through Process of Spintronics


With the help of spintronics, organic semiconductors can now compete with silicon in future computing applications / Photo by: Raimond Spekking via Wikimedia Commons


With the help of switching to spintronics and monitoring the movement of up and down states of electrons, computer processing for organic semiconductors may just as easily match up and even compete with silicon for future computing applications.

As reported by NanoWerk, the term “spin” is used to describe the “intrinsic angular momentum of electrons”, or their natural movement pattern. In order to use this method to improve computer calculations, the study found that devices built on spintronics actually have the capacity to transmit information via a pure spin current, or the “relative spin of the series of electrons.”

The article explains that this will help make the device more efficient, as the system of eliminating the movement of charge prevents a device from overheating and can actually provide us with more efficient computers in the future.

It’s also cheaper to produce. So why don’t we all just switch to organic semiconductors to cut cost and further the cause of nanotechnology? Says Dr. Shu-Jen Wang, recent graduate of the University of Cambridge’s Cavendish Laboratory, this hasn’t been the case because there are still many variables needed to consider in this kind of path in the development of semiconductors.

For one thing, she says that the spin is reliant on just how far an electron’s spin can take it, as well as the duration of which it “lives.” As co-first author to the study, Dr. Deepak Venkateshvaran adds, though there is promise with organic semiconductors that rely on spintronics, there were still problems with it that need discussion.

These being that the study surrounding it is still relatively incomplete, and "have not been realistic candidates." This is because “it was impossible to move spins around a polymer circuit far enough without losing the original information.”  Additionally, compared to silicon and gallium arsenide semiconductors, organic semiconductors that rely on electron spins produce charges that move more slowly, and are generally highly disordered.

Contrast this with silicon and gallium arsenide semiconductors that have structured crystalline structures that allow for faster packet charge movements.