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Published on July 8th, 2015 | by James Ayre


Perovskite Solar Cell Record — First Certified Conversion Efficiency Of 15% For Cell Greater Than 1 CM Square

July 8th, 2015 by  

Yet another new “breakthrough” was made in the field of pervoskite solar cells — with a conversion efficiency of 15% in a cell greater than 1 cm square in size being certified by the Calibration, Standards and Measurement Team at the Research Center for Photovoltaics, National Institute of Advanced Industrial Science and Technology.

The new pervoskite solar cell was created by researchers at the Photovoltaic Materials Unit at the National Institute for Materials Science (NIMS, Sukekatsu Ushioda, president) — led by Dr Liyuan Han.


As most high conversion efficiencies achieved to date using perovskite solar cells have been via small-sized cells (about 0.1 cm2) not suited for actual use, the new certified record represents one more step towards potential widespread commercial use of the technology. (The current record for small cells is 20.1% conversion efficiency — the measurement error range was large for that, though, due to the size of the cell used, 0.0955 cm2.)

The new cells were given the high conversion efficiency via the control of the morphology of the pervoskite layer via the use of a new fabrication method.

A recent press release provides more:

Here, we developed a new charge transport material which shows hydrophobicity and high carrier mobility, and successfully improved the stability of perovskite solar cells with this new material. Based on these results, we expanded the solar cell to more than 1 cm square and improved the method to create the device. As a result, we achieved 15% conversion efficiency in perovskite solar cells for the first time in the world certified by the international public test center (Calibration, Standards and Measurement Team at the Research Center for Photovoltaics, National Institute of Advanced Industrial Science and Technology).

On the basis of these outcomes, we aim to further improve conversion efficiency by developing new carrier transport materials with even higher performance and controlling interfaces in perovskite solar cells.

Good news for perovskites fans… Closer by the day… We’ve been covering the technology feverishly lately. For more, see:

Perovskites Will Power New Low-Cost & Highly Efficient Solar Cells

Perovskite Solar Cells — What This Breakthrough Needs To Get To Market

Qatar Claims New Perovskite Research Will Lead To Solar Energy Becoming More Economical

Microscopic Flaws In Perovskite Crystals In Way Of Improved Solar Conversion Efficiency, Potential For Big Boosts With Removal

Silicon Solar Cells Hit A Wall, Perovskite Leaps It

600 MW Perovskite Solar Cell Facility Slated For Turkey

Image Credit: AIST 


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About the Author

James Ayre's background is predominantly in geopolitics and history, but he has an obsessive interest in pretty much everything. After an early life spent in the Imperial Free City of Dortmund, James followed the river Ruhr to Cofbuokheim, where he attended the University of Astnide. And where he also briefly considered entering the coal mining business. He currently writes for a living, on a broad variety of subjects, ranging from science, to politics, to military history, to renewable energy.

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