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Title Temperature-dependent photoluminescence imaging and characterization of a multi-crystalline silicon solar cell defect area [electronic resource] : preprint / Steve Johnston ... [et al.].

Imprint [Golden, CO] : National Renewable Energy Laboratory, [2011]

Copies

Location Call No. OPAC Message Status
 Axe Federal Documents Online  E 9.17:NREL/CP-5200-50706    ---  Available
Description 1 online resource (6 p.) : ill. (chiefly col.)
Series NREL/CP ; 5200-50706
Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-5200-50706.
System Details Full text available via Internet in .pdf format. Adobe Acrobat Reader required.
Note Title from title screen (viewed August 1, 2011).
"July 2011."
"Presented at the 37th IEEE Photovoltaic Specialists Conference (PVSC 37), Seattle, Washington, June 19-24, 2011."
Summary Photoluminescence (PL) imaging is used to detect areas in multi-crystalline silicon that appear dark in band-to-band imaging due to high recombination. Steady-state PL intensity can be correlated to effective minority-carrier lifetime, and its temperature dependence can provide additional lifetime-limiting defect information. An area of high defect density has been laser cut from a multi-crystalline silicon solar cell. Both band-to-band and defect-band PL imaging have been collected as a function of temperature from ~85 to 350 K. Band-to-band luminescence is collected by an InGaAs camera using a 1200-nm short-pass filter, while defect band luminescence is collected using a 1350-nm long pass filter. The defect band luminescence is characterized by cathodo-luminescence. Small pieces from adjacent areas within the same wafer are measured by deep-level transient spectroscopy (DLTS). DLTS detects a minority-carrier electron trap level with an activation energy of 0.45 eV on the sample that contained defects as seen by imaging.
Bibliography Includes bibliographical references (p. 5-6).
Funding DE-AC36-08GO28308
Subject Photoluminescence.
Photovoltaic cells -- Research.
Solar cells -- Testing.
Defects.
Added Author Johnston, Steve.
National Renewable Energy Laboratory (U.S.)
IEEE Photovoltaic Specialists Conference (37th : 2011 : Seattle, Wash.)
Gpo Item No. 0430-P-04 (online)
Sudoc No. E 9.17:NREL/CP-5200-50706

 
    
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