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Inkjet printed solar cell turns your portrait into a power source

by • July 26, 2016 • No Comments

Researchers at Aalto University have come up with an inexpensive inkjet-printed solar cell that can be created into text or images. Designed to be utilized with low-power devices, it has may already shown performance and durability comparable to that of existing organic dye solar cells.

The cell is created by inkjet printing a concentrated dye solution on a titanium oxide movie, that acts as an electrolyte. This combination was originally created by the Swiss École Polytechnique Fédérale de Lausanne and the Aalto team has applied it to form solar cells via an image file with darkness and transparency suitably modified for clarity and efficiency. The outcome is a colorful, patterned cell that can not just generate electricity, but is pleasing to appear at and can convey information by text or digital code.

“The many challenging thing was to find suitable solvent for the dye and the right jetting parameters that gave exact and uniform print quality,” says doctoral candidate Merve Özkan.

Testing of the finished cells showed they retained their 6.4 percent efficiency actually after 1,000 hours of accelerated aging under simulated sunlight and an extra
1,154 hours of half-sunlight.

“The inkjet-dyed solar cells were as efficient and durable as the corresponding solar cells made in a traditional way,” says postdoctoral researcher Ghufran Hashmi. “They endured additional than one thousand hours of continuous light and heat stress without any signs of performance degradation”

The research outcomes were published in Energy & Environmental Science.

Source: Aalto University

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