GT Solar single-cast silicon material with a maximum efficiency of more than 19%

GT Solar International, Inc., a supplier of polysilicon production technology for solar, LED and other specialty markets, and sapphire and silicon crystal growth systems and related materials. (Nasdaq:SOLR) announced today that researchers from the Georgia Institute of Technology have demonstrated that the average cell efficiency of single-cast silicon grown in GT's advanced ingot furnaces is 18.8%. Efficiency exceeds 19%.

Dr. Ajeet Rohatgi, Director, Professor and Director of the Center of Excellence for Photovoltaic Research and Education at Georgia Institute of Technology stated: "We recently conducted battery efficiency tests using unicast materials provided by GT. The most promising large-area screen printing monolithic materials ever announced by any other organization, this extremely encouraging result shows that in the future, photovoltaic manufacturers may use single-cast materials and today’s advanced low-cost battery technologies to improve batteries. effectiveness."

Tom Gutierrez, President and CEO of GT Solar stated: “The efficiency of the battery produced from our single-cast material announced by the team led by Dr. Rohatgi is very satisfactory. Our senior technical team and materials scientists have been striving to pass the refining process. Technology achieves the balance of the structure of the casting furnace to produce materials with performance comparable to that of monocrystalline silicon, while being able to utilize the low-cost advantages of polysilicon production. These recent results show that we have made great progress in achieving this goal. We expect to bring it to market later this year."

GT is constantly working to develop advanced crystal growth technology to improve the quality of ingots and create value for customers. Once fully commercialized, this single-crystal growth technology will help photovoltaic manufacturers reduce costs and make solar technology more cost-competitive than other energy sources.

About GT Solar International, Inc.

GT Solar International, Inc. It is the world's leading supplier of polysilicon production technology, sapphire and silicon crystal growth systems and related materials, serving solar, LED and other specialty markets. The company's products and services help customers optimize the manufacturing environment and reduce the cost of ownership.

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