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Title: In situ optical diagnostic for monitoring or control of sodium diffusion in photovoltaics manufacturing

Patent ·
OSTI ID:1214585
; ; ;

A method of fabricating a photovoltaic device 100, includes the steps of providing a glass substrate 102, depositing a molybdenum layer 104 on a surface of the glass substrate, directing light through the glass substrate to the near-substrate region of the molybdenum layer 206, detecting an optical property of the near-substrate region of the molybdenum layer after interaction with the incident light 208 and determining a density of the near-substrate region of the molybdenum layer from the detected optical property 210. A molybdenum deposition parameter may be controlled based upon the determined density of the near-substrate region of the molybdenum layer 218. A non-contact method measures a density of the near-substrate region of a molybdenum layer and a deposition chamber 300.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC36-08GO28308
Assignee:
Alliance For Sustainable Energy, LLC (Golden, CO)
Patent Number(s):
9,136,184
Application Number:
14/112,033
OSTI ID:
1214585
Resource Relation:
Patent File Date: 2012 Feb 17
Country of Publication:
United States
Language:
English

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