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Reduced internal electric fields, rougher surfaces and the introduction of superlattices are helping to drive up the efficiencies of nitride solar cells COMPARED to lasers, transistors and LEDs, solar cells based on nitrides tend to deliver poor performances. But these materials can yield efficient compoundsc@gmail.com (nelson rex) 31 May, 2011--
Source: http://www.articlesxpert.com/business/the-role-online-web-directories-in-business-growth--the-well-directed-marketing-approach-1.htm
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