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Title: Optical control of multi-stage thin film solar cell production

Embodiments include methods of depositing and controlling the deposition of a film in multiple stages. The disclosed deposition and deposition control methods include the optical monitoring of a deposition matrix to determine a time when at least one transition point occurs. In certain embodiments, the transition point or transition points are a stoichiometry point. Methods may also include controlling the length of time in which material is deposited during a deposition stage or controlling the amount of the first, second or subsequent materials deposited during any deposition stage in response to a determination of the time when a selected transition point occurs.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1253341
Report Number(s):
9,343,378
14/204,795
DOE Contract Number:
AC36-08GO28308
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Mar 11
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE