ZnMgO by APCVD enabling high-performance mid-bandgap CIGS on polyimide modules
Subtitle: October 2009 - October 2010
By: Lawrence Woods, Ascent Solar Technologies, Inc
Contributors: Ascent Solar Technologies, Inc; National Renewable Energy Laboratory (U.S.)
Series: NREL/SR -- 5200-51379; NREL/SR -- 5200-51379.
Publisher: National Renewable Energy Laboratory
Published: 2011
Place of publication: Golden, CO
Language: eng
Format: [electronic resource] :
Number of pages: 19
Subjects: Photovoltaic cells; Research; Zinc oxide; Chemical vapor deposition; Copper indium selenide; Gallium
Other titles: Zinc magnesium oxide atmospheric pressure chemical vapor deposition enabling high performance mid bandgap copper indium gallium diselenide on polyimide modules
Description: This Pre-Incubator project was designed to increase the "real world" CIGS based photovoltaic module performance and decrease the Levelized Cost of Energy (LCOE) of systems utilizing those modules compared to our traditional CIGS based photovoltaic modules. This was enabled by a) increasing the CIGS bandgap and b) developing better matched device finishing layers to the mid-bandgap CIGS based photovoltaics; including window and buffer layers (and eventually the transparent conducting oxide (TCO)). Incremental progress in the novel device performance was demonstrated throughout the program, and ultimately achieved performance results that exceeded the milestones ahead of schedule. Metal-oxide buffer layer devices with mid-bandgap CIGS alloys on polyimide substrates were produced with efficiencies of over 12%. Corresponding mid-bandgap devices with CdS buffers produced over 13% efficient devices. Furthermore, no obvious degradation in the device performance has been observed to date, after proper storage ambient of the different types of unencapsulated devices were identified.
Notes: Title from PDF title screen (NREL, viewed May 9, 2011).

"April 2011."

Includes bibliographical references.

Prepared under Subcontract No. NEU-0-99010-02 DE-AC36-08GO28308 PV10.1199

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