Newsletter registration

By using our website, you are agreeing to cookies being stored and Google Analytics being used on your device in order to offer the best possible service. You can find more information on thishere.
Austria.
Where Your Profits Grow Sky High.

Towards optical data transmission in the chip

Photo: Florian Hackl © Photo: Florian Hackl

The resistance of copper wires not only leads to speed limitations but also result in energy losses. The problem with light signals that computer chips consist of silicon, which is very inefficient in producing light. Direct semiconductors are much more suitable for producing light, but can only be integrated in a chip with an uneconomically high effort.

The research group led by Martyna Grydlik and Moritz Brehm of the Institute for Semiconductor and Solid State Physics at the University of Linz have succeeded in generating quantum dots i.e. objects with a size of just a few millionths of a millimeter on a silicon surface and then getting them to glow. “Our quantum dots consist of germanium, a material which can be applied to silicon in a relatively easy manner”, Brehm said. “It is not suitable as a source of light, just like silicon. However, the special structure of the quantum dots enables an efficient generation of photons“, he added.    

The quantum dots serve as tiny cages for the charge carriers involved in producing the light. “By confining them, they become suitable for producing photons on the basis of quantum physical effects“, Brehm concluded.

The new method is still only a proof of concept trial. Stimulating the quantum dots does not take place by using electricity, as would necessary in using a chip, but by using an external light. According to the researchers, it should be possible to adapt the method. In this way, electrical signals could be converted into optical signals in the future, and thus be transmitted within the chip.

Service: http://dx.doi.org/10.1021/acsphotonics.5b00671

Share on Facebook Share on Facebook Share on Twitter Share on Twitter Share on Linkedin Share on Linkedin

Testimonials

Events

Meet us at events, seminars and trade shows - worldwide.

Austria Map

Find the perfect location for your company

Inspite of higher labor costs, the productivity of Siemens Villach is comparable to other Siemens susidiaries in Japan or the USA.

Siemens Austria

Logo
More testimonials

news from the business location Austria

Medical University of Vienna: New therapy option doubles the life span of B-cell lymphoma patients

The so-called CAR-T cell therapy is a promising option for treating around one fifth of patients with diffuse large B-cell lymphoma.

Ski Tourism as an Attractive Business Driver in Austria

Famous for its culture and unspoiled natural environment, Austria attracts vacationers and tourism companies from all over the world. One major advantage is the central location in the heart of Europe and the related good accessibility.

More news All blog posts