SCHNEIDER Gmb H & Co. KG
35112 Fronhausen, Germany
Phone: + 49 ( 64 26) 96 96-0
The ALP 120 aspherical lens polisher was specifically designed for
high-quality polishing. It is complemented by the Advanced Polishing
System 3D, o;ering an intelligent process flow and requiring minimal
Automatically calculating error corrections and controlling significant
threshold values, it minimizes process and measuring iterations.
Prefabricated tools with a superior microstructure guarantee superior
parts consistency, machine e;ciency and productivity.
Superior Polishing of Aspheres
SCHNEIDER Optical Machines Inc.
6644 All Stars Avenue, Suite 100
Frisco, TX 75033, USA
Phone: +1 (972) 247-4000
Advanced Polishing System 3D
PRINCETON, N.J. — A self-powered
smart window features a novel type of
solar cell that selectively absorbs near-UV light. The near-UV light is used to
generate electricity, which powers chemical reactions that lighten or darken the
glass as needed.
Organic semiconductors — specifically,
contorted hexabenzocoronene (cHBC)
derivatives — were used for constructing
the solar cells. The Princeton University
researchers chose this material because
its chemical structure can be modified to
absorb a narrow range of wavelengths —
in this case, near-UV light.
To create the cell, the researchers
deposited the semiconductor molecules
as thin films on glass, following the same
production methods as those used by
OLED manufacturers. When the solar cell
is operational, sunlight excites the cHBC
semiconductors to produce electricity.
At the same time, the team constructed
a smart window consisting of electro-
chromic polymers, which control the tint,
The solar cells that selectively harvest
near-UV photons can produce open-circuit
voltages greater than 1.6 V, and their
power generation capabilities are scalable.
Joseph Berry, a senior research scientist at the National Renewable Energy
Laboratory who was not involved in the
project, said the research is interesting
because the device scales well and targets
a specific part of the solar spectrum.
“Integrating the solar cells into the
smart windows makes them more attractive for retrofits and you don’t have
to deal with wiring power,” said Berry.
“And the voltage performance is quite
good. The voltage they have been able
to produce can drive electronic devices
directly, which is technologically quite
According to the researchers, other
types of transparent solar cells that have
Self-powered smart window uses near-UV light
Graduate student Nicholas Davy holds a sample of
the special window glass.