Technology
Asahi Kasei will
launch a new coating to apply to the surface of a solar battery to increase its
power output toward the end of this year. The new coating is based on Asahi
Kasei’s self-developed Durahikari (Durable light) that is a photocatalyst
coating to prevent outer walls of buildings from getting filthy for 30 years.
By applying the technology of Durahikari, the company employed composite
materials that mixed adaptable organic substances and inorganic substances with
high hydrophilicity using its own formulation technology. Besides maintaining
the same performance of the solar battery for 30 years, it can be applied to
the existing solar batteries.
Applied to the
surface glass of a solar battery, the coating increases the absorptance of
sunlight 4% to 99%. When it rains, the coating creates water film on the
surface to help wash off stains on the surface. It also prevents static
electricity from occurring and stains from sticking to the surface. The company
started to ship samples in 2010 to solar battery makers both at home and
abroad. In Malaga of Spain, it conducted the substantiative experiment for one
year and confirmed that the new coating increased power output by 4%.
Therefore, on the condition that a photovoltaic generation unit with a power
generation capacity of 1 MW generates 1,000 hours per year and the generated
power is purchased by 40 yen per kW, the coating will increase the profit from
sales by two million yen per year.
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