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ANALYSIS OF TRACE ELEMENTS IN POLYSILICON …
ANALYSIS OF TRACE ELEMENTS IN POLYSILICON FOR solar APPLICATIONSC ompared to the metallurgical grade silicon materials, POLYSILICON used for solar industry has significantly higher purity, usually at or above or five nine purity. The remains are impurities such as C, O, and TRACE ELEMENTS such as Fe, Cu, Ni, etc. The amount of TRACE contaminants varies depending on the manufacturer, process, and sometimes, production less than or ten part per million by weight (ppm), the quantity and composition of TRACE contaminants in POLYSILICON have a profound effect on the photovoltaic devices. Similar to the semiconductor industry, where metal contamination control is one of the key processes to improve device yield and reliability, reduced metal contamination in solar PV cells makes higher cell efficiency and longer device lifetime over 2 decades of experience serving the semiconductor industry and recognized as one of the world s leading analytical testing labs, ChemTrace has developed its own proprietary procedure to test TRACE metal contamination in the bulk of high purity solar grade POLYSILICON a
ANALYSIS OF TRACE ELEMENTS IN POLYSILICON FOR SOLAR APPLICATIONS Compared to the metallurgical grade silicon materials, polysilicon used for solar industry has significantly higher purity, usually at or
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