For
the first time, the research group at the Photovoltaic Materials Unit
of the National Institute for Materials Science (NIMS — Sukesatsu
Ushioda, president), led by Dr. Liyuan Han, achieved an energy conversion efficiency rate of fifteen percent in perovskite solar cells, as officially recognized certified at an international test center.
The most conversion efficiencies in such solar cells
thus far reported had been measured with small-sized cells — about
0.016 in². A conversion efficiency of 20.1 percent had previously been
reported, but the size of the cells used in that study — 0.0145 in² —
resulted in a large measurement error, and the report did not present
the measurement method. To advance research and development of perovskite solar cells steadily, and base it on reliable data, one must measure the conversion efficiencies at an international public test center.
The
research group increased conversion efficiency and reproduction of
perovskite solar cells by inventing a new method for controlling the
morphology of the perovskite layer. Additionally, since the conventional material used for charge carrier transport layers is hydrophilic, ...
Read more
No comments:
Post a Comment