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GT Advanced Technologies Enters a Development and Licensing Agreement with Soitec to Develop and Commercialize a High

  GT Advanced Technologies Enters a Development and Licensing Agreement with
  Soitec to Develop and Commercialize a High Productivity Hydride Vapor Phase
  Epitaxy (HVPE) System for Producing Low-Cost GaN Template Substrates

   HVPE system expected to lower the cost of LED production and accelerate
               adoption in commercial and residential lighting

Business Wire

NASHUA, N.H. & BERNIN, France -- February 25, 2013

GT Advanced Technologies (NASDAQ: GTAT) and Soitec (NYSE Euronext: SOI), today
announced a development agreement and a licensing agreement allowing GT to
develop, manufacture and commercialize a high-volume, multi-wafer HVPE system
to produce high-quality GaN epi layers on substrates used in the LED and other
growth industries such as power electronics. The higher growth rates and
improved material properties made possible by the HVPE system are expected to
significantly reduce process costs while boosting device performance compared
with the traditional MOCVD process. Initial pre-payment of the licensing fees
as outlined in the agreement is already underway, but further specific terms
were not disclosed.

GT will develop, manufacture and commercialize the HVPE system incorporating
Soitec Phoenix Labs’ (a subsidiary of Soitec) unique and proprietary HVPE
technology including its novel and advanced source delivery system that is
expected to lower the costs of precursors delivered to the HVPE reactor. The
HVPE system will enable the production of GaN template sapphire substrates at
scale. The expected target date for the commercial availability of the HVPE
system is the second half of 2014.

“We have been working for more than 6 years on GaN epi processes and have
created this breakthrough HVPE technology critical in producing high-quality
and low cost GaN layers on sapphire substrates,” said Chantal Arena, VP and
general manager of Soitec Phoenix Labs. “The development and license
agreements we are announcing today with GT is the ultimate validation of this
work and builds on the agreement we announced last year with Silian to
integrate a HVPE-based technology on their sapphire. This allows Soitec to
structure its LED lighting offer around differentiated technologies and
industrial partners that includes materials and equipment. Soitec Phoenix Labs
deep know-how in epitaxy technologies and GaN materials will be a key factor
to enable GT to bring a revolutionary HVPE system to the market.”

“GT has a successful track record of delivering innovative equipment that has
changed industries such as solar PV and LED,” said Tom Gutierrez, GT’s
president and CEO. “Our decision to enter into the agreements with Soitec is
the result of our extensive search for the right partner with the right
technology to complement our equipment business as we diversify into new,
high-value technologies that broaden our reach and bring winning solutions to
the market. Soitec Phoenix Labs brings a high level of expertise and technical
experience in GaN process know-how. When commercially available, we believe
the new HVPE system will be a key element to further reduce LED device costs
and help propel the industry to greater levels of competitiveness and growth.”

About Soitec

Soitec is an international manufacturing company, a world leader in generating
and manufacturing revolutionary semiconductor materials at the frontier of the
most exciting energy and electronic challenges. Soitec’s products include
substrates for microelectronics (most notably SOI: Silicon-on-Insulator) and
concentrator photovoltaic systems (CPV). The company’s core technologies are
Smart Cut™, Smart Stacking™ and Concentrix™, as well as expertise in epitaxy.
Applications include consumer and mobile electronics, microelectronics-driven
IT, telecommunications, automotive electronics, lighting products and
large-scale solar power plants. Soitec has manufacturing plants and R&D
centers in France, Singapore, Germany, and the United States. For more
information, visit: www.soitec.com.

About GT Advanced Technologies Inc.

GT Advanced Technologies Inc. is a diversified technology company with
innovative crystal growth equipment and solutions for the global solar, LED
and electronics industries. Our products accelerate the adoption of new
advanced materials that improve performance and lower the cost of
manufacturing. For additional information about GT Advanced Technologies,
please visit www.gtat.com.

Forward-Looking Statements

Certain of the information in this press release relate to the Company’s
future expectations, plans and prospects for its business and industry that
constitute "forward-looking statements" for the purposes of the safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995, including
but not limited to: the Company’s ability to successfully develop and deliver
the HVPE system, the ability to achieve the expected performance of the HVPE
system to lower the cost of LED substrate manufacturing, the ability of the
Company and Soitec Labs to successfully execute the terms of development and
licensing agreements and the Company’s ability to successfully market its
sapphire material to new market segments outside of its traditional markets,
the HVPE system will accelerate adoption of LED in commercial and residential
lighting; higher growth rates and improved material properties will be made
possible by the HVPE along with significantly reduced process costs and
boosting device performance compared with the traditional MOCVD process; HVPE
system will enable the production of GaN template sapphire substrates at
scale; the expected target date for the commercial availability of the HVPE
system is the second half of 2014;and the HVPE system will be a key element to
further reduce LED device costs and help propel the industry to greater levels
of competitiveness and growth. These forward-looking statements are not a
guarantee of performance and are subject to a number of uncertainties and
other factors, many of which are outside the Company's control, which could
cause actual events to differ materially from those expressed or implied by
the statements. Other factors that may cause actual events to differ
materially from those expressed or implied by our forward-looking statements
include the impact of continued decreased demand and/or excess capacity in the
markets for the output of our solar and sapphire equipment, general economic
conditions and the tightening credit market having an adverse impact on demand
for the Company’s products, the possibility that changes in government
incentives may reduce demand for solar products, which would, in turn, reduce
demand for our equipment, technological changes could render existing products
or technologies obsolete, the Company may be unable to protect its
intellectual property rights, competition from other manufacturers may
increase, exchange rate fluctuations and conditions in the credit markets and
economy may reduce demand for the Company's products and various other risks
as outlined in GT Advanced Technologies Inc.'s filings with the Securities and
Exchange Commission, including the statements under the heading "Risk Factors"
in the company's quarterly report on Form 10-Q for the fiscal quarter ended
September 29, 2012. Statements in this press release should be evaluated in
light of these important factors. The statements in this press release
represent GT Advanced Technologies Inc.'s expectations and beliefs as of the
date of this press release. GT Advanced Technologies Inc. anticipates that
subsequent events and developments may cause these expectations and beliefs to
change. GT Advanced Technologies Inc. is under no obligation to, and expressly
disclaims any such obligation to, update or alter its forward-looking
statements, whether as a result of new information, future events, or
otherwise.

Contact:

Media
GT Advanced Technologies
Jeff Nestel-Patt, 603-204-2883
jeff.nestelpatt@gtat.com
or
Soitec
International Media Contacts
Trade Press
Camille Darnaud-Dufour, +33 (0) 4 76 92 87 83
camille.darnaud-dufour@soitec.com
or
Soitec
Business Press
Marylen Schmidt, +33 (0) 4 76 92 87 83
marylen.schmidt@soitec.com
or
Investors/Analysts
GT Advanced Technologies
Ryan Flaim, 603-681-3869
ryan.flaim@gtat.com
or
Soitec
Olivier Brice, +33 (0) 4 76 92 93 80
olivier.brice@soitec.com