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Current issue

ELEKTRO 1/2018 was released on January 16th 2018. Its digital version will be available on February 12th 2018.

Topic: Electrotechnology; Materials for electrical engineering; Wiring material

Main Article
A new electrical insulating fluid and its possible deployment in practice

SVĚTLO (Light) 6/2017 was released on December 11th 2017. Its digital version will be available on january 11th 2018.

Lighting installations
The lighting of university building Centrale Supélec in Saclay in France
The light for our future

Daylight
Application and judgment light guides Solatube®

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

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