With this aim in mind, the company is constantly working to improve its technology so as to increase the efficiency of power plants.

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Applied Materials (nasdaq: AMAT - news - people ), are working to improve another thin-film technology that is extremely cheap but so inefficient it can't yet match First Solar in cost per kwh.

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Major technology companies are also working to improve targeting of mobile ads while improving protection of user privacy.

WSJ: Online Ads Can Now Follow You Home