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In this paper, we have focused on the formation and the role of CdS/CdTe interface on CdTe solar cells. The devices were made using chemical bath deposited (CBD) CdS on SnO 2 /glass substrates and the CdTe was deposited by close spaced sublimation (CSS). CdTe was treated with CdCl 2 : known to be a key processing parameter. Compositional analysis showed(More)
The six competencies of the Accreditation Council for Graduate Medical Education include the lifelong learning skills of evidence-based medicine (EBM)/information mastery. We developed and tested an Objective Structured Clinical Examination (OSCE) station that would measure these skills in family medicine residents. This EBM OSCE station is a 30-minute(More)
Anti-reflection coated (ARC) glass is being used in an increasing percentage of PV modules due to expected higher power and energy output. Assurance of the energy gain and the reliability of the coating is essential to create value. This paper reports on the steps taken to test, qualify, and release in production photovoltaic modules made with ARC glass.(More)
This paper details the laboratory processes used to fabricate CdS/CdTe solar cells at the National Renewable Energy Laboratory. The basic fabrication technique includes low-pressure chemical vapor deposited SnO 2 , chemical-bath deposited CdS, close-spaced sublimated CdTe, solution-CdCl 2 treatment, and an acid-contact etch, followed by application of a(More)
Impurities in cadmium sulfide (CdS) films are a concern in the fabrication of copper (indium, gallium) diselenide (CIGS) and cadmium telluride (CdTe) photovoltaic devices. Films of CdS grown using chemical bath deposition (CBD) generally yield better devices than purer CdS films grown using vacuum deposition techniques, despite the higher impurity(More)
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