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The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

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DE2008929631

Publication Date	2008
Personal Author	Sopori, B.; Rupnowski, P.; Appel, J.; Li, C.; Johnston, S.
Page Count	6
Abstract	This paper describes reasons that lifetime measurments may be irreproducible using iodine-in-ethanol (I-E) passivation. Possible factors include the strength of the iodine in ethanol solution, wafer cleaning procedures, influence of wafer container during lifetime measurement, and stability of I-E.
Keywords	Wafers Containers Ethanol Iodine Carrier lifetime Minority carriers Passivation Photoelectric emission Stability Cleaning Photovoltaic cells Photocurrent
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	National Renewable Energy Lab., Golden, CO.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200825
Contract Number	DE-AC36-99-GO10337

Wafer Preparation and Iodine-Ethanol-Ethanol Passivation Procedure for Reproducible Minority-Carrier Lifetime Measurement: Preprint.

Wafer Preparation and Iodine-Ethanol-Ethanol Passivation Procedure for Reproducible Minority-Carrier Lifetime Measurement: Preprint.
DE2008929631

Publication Date	2008
Personal Author	Sopori, B.; Rupnowski, P.; Appel, J.; Li, C.; Johnston, S.
Page Count	6
Abstract	This paper describes reasons that lifetime measurments may be irreproducible using iodine-in-ethanol (I-E) passivation. Possible factors include the strength of the iodine in ethanol solution, wafer cleaning procedures, influence of wafer container during lifetime measurement, and stability of I-E.
Keywords	Wafers Containers Ethanol Iodine Carrier lifetime Minority carriers Passivation Photoelectric emission Stability Cleaning Photovoltaic cells Photocurrent
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	National Renewable Energy Lab., Golden, CO.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200825
Contract Number	DE-AC36-99-GO10337