We Continue the Work of Those
Who Were the First.

  • Electrotechnics
  • Electrical Engineering
  • Light & Lighting
  • Power Engineering
  • Transportation
  • Automation
  • Communication
  • Smart Buildings
  • Industry
  • Innovation

Current issue

ELEKTRO 11/2018 was released on October 31th 2018. Its digital version will be available on November 30st 2018.

Topic: Switchboards and substations; Maintenance of electrical equipment; Rotating electrical machines and drives

Main Article
Smart Cities (part 4 – volume 1)

SVĚTLO (Light) 5/2018 was released on September 17th 2018. Its digital version will be available immediately.

Interiors lighting
Luminaire selection by the concept of interior
The unique book about interiors nowadays on market
Invitation on colloquium Interiéry 2018 – exceptional action for the seventh time

Newsreel
Profesor Jiří Habel passed away – memories remain

Tiny high-performance solar cells turn power generation sideways

05.08.2016 | University of Wisconsin—Madison | news.wisc.edu

University of Wisconsin—Madison engineers have created high-performance, micro-scale solar cells that outshine comparable devices in key performance measures. The miniature solar panels could power myriad personal devices — wearable medical sensors, smartwatches, even autofocusing contact lenses.

Large, rooftop photovoltaic arrays generate electricity from charges moving vertically. The new, small cells, capture current from charges moving side-to-side, or laterally. And they generate significantly more energy than other sideways solar systems. New-generation lateral solar cells promise to be the next big thing for compact devices because arranging electrodes horizontally allows engineers to sidestep a traditional solar cell fabrication process: the arduous task of perfectly aligning multiple layers of the cell’s material atop one another.

Micro photovoltaic cells

Top-down photovoltaic cells are made up of two electrodes surrounding a semiconducting material like slices of bread around the meat in a sandwich. When light hits the top slice, charge travels through the filling to the bottom layer and creates electric current. In the top-down arrangement, one layer needs to do two jobs: It must let in light and transmit charge. Therefore, the material for one electrode in a typical solar cell must be not only highly transparent, but also electrically conductive. And very few substances perform both tasks well.

Read more at University of Wisconsin—Madison

Image Credit: University of Wisconsin—Madison

-jk-