NDLI: Quantum efficiency loss after PID stress: Wavelength dependence on cell surface and cell edge

Content Provider	IEEE Xplore Digital Library
Author	Jaewon Oh Bowden, S. TamizhMani, G. Hacke, P.
Copyright Year	2015
Description	Author affiliation: Nat. Renewable Energy Lab., Golden, CO, USA (Hacke, P.) \|\| Solar Power Lab., Arizona State Univ., Tempe, AZ, USA (Jaewon Oh; Bowden, S.) \|\| Photovoltaic Reliability Lab., Arizona State Univ., Mesa, AZ, USA (TamizhMani, G.)
Abstract	It is known that the potential induced degradation (PID) stress of conventional p-base solar cells affects power, shunt resistance, junction recombination, and quantum efficiency (QE). One of the primary solutions to address the PID issue is a modification of chemical and physical properties of antireflection coating (ARC) on the cell surface. Depending on the edge isolation method used during cell processing, the ARC layer near the edges may be uniformly or non-uniformly damaged. Therefore, the pathway for sodium migration from glass to the cell junction could be either through all of the ARC surface if surface and edge ARC have low quality or through the cell edge if surface ARC has high quality but edge ARC is defective due to certain edge isolation process. In this study, two PID susceptible cells from two different manufacturers have been investigated. The QE measurements of these cells before and after PID stress were performed at both surface and edge. We observed the wavelength dependent QE loss only in the first manufacturer's cell but not in the second manufacturer's cell. The first manufacturer's cell appeared to have low quality ARC whereas the second manufacturer's cell appeared to have high quality ARC with defective edge. To rapidly screen a large number of cells for PID stress testing, a new but simple test setup that does not require laminated cell coupon has been developed and is used in this investigation.
Starting Page	1
Ending Page	4
File Size	1736597
Page Count	4
File Format	PDF
e-ISBN	9781479979448
DOI	10.1109/PVSC.2015.7355629
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stress Surface treatment Surface waves Photovoltaic systems Glass Degradation photovoltaic cells PID quantum efficiency durability shunting edge isolation
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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