Free Keithley Web-Based Seminar Explores Electrical Measurements of Photovoltaic/Solar Cell Devices

CLEVELAND--(Business Wire)--
Keithley Instruments, Inc. (NYSE: KEI), a world leader in advanced electrical
test instruments and systems, will offer a free, web-based seminar titled
"Photovoltaic Measurements: Testing the Electrical Properties of Today`s Solar
Cells." It will be broadcast on Thursday, June 18, 2009. This one-hour seminar
will provide an overview of the electrical measurements used in photovoltaic
device development from basic research to early production testing. To register
for this event, visit www.keithley.com/events/semconfs/webseminars.

In addition to the underlying theory of how solar cells work, this web-based
seminar will focus on the physical measurements required to characterize them,
as well as on cell properties that can be inferred from test results. Topics
will include both capacitance-voltage (C-V) and current-voltage (I-V)
characterization, including DC and pulse techniques, as well as common
measurements of a cell`s efficiency. The event will conclude with a text-based
Q&A session.

Participants in the seminar will learn about the measurements required to
characterize photovoltaic devices, the types of device information electrical
characterization can provide, and special system considerations for test labs.

Chris Armstrong, an associate marketer at Keithley who is currently focusing on
solar cell characterization, will present the seminar. Armstrong holds a B.S. in
computer science and engineering from the University of Toledo and has more than
eight years of experience in semiconductor device measurements.

Registration Information.

"Photovoltaic Measurements: Testing the Electrical Properties of Today`s Solar
Cells" will be broadcast on Thursday, June 18, at 2:00 p.m. EDT. The event is
free to the public, but participants must register at
www.keithley.com/events/semconfs/webseminars in advance. The seminar will also
be archived on Keithley`s website for those unable to attend the original
broadcast.

For More Information.

For more information on Keithley or any of its test solutions, visit
www.keithley.com or contact the company at:

Telephone: 800-688-9951
440-248-0400
FAX: 440-248-6168
E-mail: publisher@keithley.com
Internet: www.keithley.com
Address: Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, OH 44139-1891

About Keithley Instruments, Inc.

With more than 60 years of measurement expertise, Keithley Instruments has
become a world leader in advanced electrical test instruments and systems from
DC to RF (radio frequency). Our customers are scientists and engineers in the
worldwide electronics industry involved with advanced materials research,
semiconductor device development and fabrication, and the production of end
products such as portable wireless devices. The value we provide them is a
combination of products for their critical measurement needs and a rich
understanding of their applications to improve the quality of their products and
reduce their cost of test.

Products and company names listed are trademarks or trade names of their
respective companies.

Keithley Instruments, Inc.
Ellen Modock, 440-498-2746
modock_ellen@keithley.com
or
Reader Inquiries: 1-800-688-9951

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