Published on July 8th, 2015 | by James Ayre9
Perovskite Solar Cell Record — First Certified Conversion Efficiency Of 15% For Cell Greater Than 1 CM Square
July 8th, 2015 by James Ayre
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: