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Current issue

ELEKTRO 7/2017 was released on June 26th 2017. Its digital version will be available on July 28th 2017.

Topic: Cables, conductors and cable technique; Connectors; Software; Marking and labelling

Main Article
Electrical insulation and thermal conductivity

SVĚTLO (Light) 4/2017 was released on August 8th 2017. Its digital version will be available on September 8th 2017.

Optical radiation effects and use
Glow-worm in a light engineer eyesight

Lighting installations
OSRAM TecDay Czech Republic 2017
Workroom illumination of Dominican provincial in Prague
innogy – reconstruction of company administrative centre

Organic solar cells with increased transparency and efficiency

08.03.2017 | TechXplore | www.techxplore.com

Researchers developed a semi-transparent organic solar cell that achieves better efficiency and transparency than existing ones.

Semi-transparent organic solar cells (OSCs) have potential for providing low-cost, large-area energy conversion devices for various applications such as windows, roof covers and greenhouses. However, it is challenging to achieve semi-transparent OSCs with high power conversion efficiency (PCE) and high transparency at the same time. The average visible transmittance (AVT) of the cell can be increased by decreasing the binary film thickness; however, this goes at the expense of the PCE because less sunlight is absorbed by a thinner layer.

Organic solar cells

In a new study researchers bypassed this tradeoff between transparency and efficiency of OSCs by using a ternary mixture. In addition, they used a flexible and transparent top electrode that was applied via a lamination step. As an advantage, the lamination process is simple and compatible with roll-to-roll systems for OSC production from solution.

Read more at TechXplore

Image Credit: Alexander Colsmann, KIT

-jk-