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IBM of Yorktown Heights, New York USA, and Tokyo Ohka Kogyo Co., Ltd. (TOK) are working together to develop and bring to market low-cost next generation solar energy products. The companies want to produce solar energy products that are more affordable and easier to install than those that are available.
TOK and IBM have agreed to jointly develop processes, materials, and equipment suitable for the production of CIGS (Copper-Indium-Gallium-Selenide) solar cell modules. They can be put on cheap glass substrates instead of silicon and they have higher efficiency. IBM acknowledges that the cost per kW hour of the electricity from current photovoltaics is an inhibitor to a more widespread adoption of solar energy. IBM Research reports the development of new, non-vacuum, solution-based manufacturing processes for CIGS solar cells that can be put on flexible backing. IBM says it is targeting efficiencies around 15% and higher compared to current thin film product efficiencies that vary from around 6% to less than 12%. IBM contends that combining its technology with the proven coating technique and high purity chemicals of TOK has the potential to bring the large scale production of thin-film solar cells to market.
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