Standard Test Method for Calibration of Non-Concentrator Photovoltaic Secondary Reference Cells

SIGNIFICANCE AND USE
The electrical output of photovoltaic devices is dependent on the spectral content of the source illumination and its intensity. To make accurate measurements of the performance of photovoltaic devices under a variety of light sources, it is necessary to account for the error in the short-circuit current that occurs if the relative spectral response of the primary reference cell is not identical to the spectral response of the cell to be calibrated. A similar error occurs if the spectral irradiance distribution of the test light source is not identical to the desired reference spectral irradiance distribution. These errors are accounted for by the spectral mismatch parameter M (Test Method E973), a quantitative measure of the error in the short-circuit current measurement. It is the intent of this test method to provide a recognized procedure for calibrating, characterizing, and reporting the calibration data for secondary photovoltaic reference cells.
A secondary reference cell is calibrated to the same reference spectral irradiance distribution as the primary reference cell used during the calibration. Primary reference cells can be calibrated by use of Test Method E1125 or Test Method E1039.
Note 1—No standards for calibration of reference cells to the extraterrestrial spectral irradiance distribution presently exist.
A secondary reference cell should be recalibrated yearly, or every six months if the cell is in continuous use outdoors.
Recommended physical characteristics of reference cells are provided in Specification E1040.
Because silicon solar cells made on p-type substrates are susceptible to a loss of Isc  upon initial exposure to light, it is required that newly manufactured reference cells be light soaked at an irradiance level greater than 850 W/m2 for 2 h prior to initial charcterization in Section 7.
SCOPE
1.1 This test method covers calibration and characterization of secondary terrestrial photovoltaic reference cells to a desired reference spectral irradiance distribution. The recommended physical requirements for these reference cells are described in Specification E1040. Reference cells are principally used in the determination of the electrical performance of a photovoltaic device.
1.2 Secondary reference cells are calibrated indoors using simulated sunlight or outdoors in natural sunlight by reference to a primary reference cell previously calibrated to the same desired reference spectral irradiance distribution.
1.3 Secondary reference cells calibrated according to this test method will have the same radiometric traceability as the of the primary reference cell used for the calibration. Therefore, if the primary reference cell is traceable to the World Radiometric Reference (WRR, see Test Method E816), the resulting secondary reference cell will also be traceable to the WRR.
1.4 This test method applies only to the calibration of a photovoltaic cell that demonstrates a linear short-circuit current versus irradiance characteristic over its intended range of use, as defined in Test Method E1143.
1.5 This test method applies only to the calibration of a photovoltaic cell that has been fabricated using a single photovoltaic junction.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1362 − 10
StandardTest Method for
Calibration of Non-Concentrator Photovoltaic Secondary
1
Reference Cells
This standard is issued under the fixed designation E1362; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This test method covers calibration and characterization
2.1 ASTM Standards:
ofsecondaryterrestrialphotovoltaicreferencecellstoadesired
E490Standard Solar Constant and Zero Air Mass Solar
reference spectral irradiance distribution. The recommended
Spectral Irradiance Tables
physicalrequirementsforthesereferencecellsaredescribedin
E691Practice for Conducting an Interlaboratory Study to
SpecificationE1040.Referencecellsareprincipallyusedinthe
Determine the Precision of a Test Method
determination of the electrical performance of a photovoltaic
E772Terminology of Solar Energy Conversion
device.
E816Test Method for Calibration of Pyrheliometers by
1.2 Secondary reference cells are calibrated indoors using
Comparison to Reference Pyrheliometers
simulated sunlight or outdoors in natural sunlight by reference
E927Specification for Solar Simulation for Photovoltaic
to a primary reference cell previously calibrated to the same
Testing
desired reference spectral irradiance distribution.
E948Test Method for Electrical Performance of Photovol-
taic Cells Using Reference Cells Under Simulated Sun-
1.3 Secondary reference cells calibrated according to this
light
test method will have the same radiometric traceability as the
E973Test Method for Determination of the Spectral Mis-
of the primary reference cell used for the calibration.
Therefore, if the primary reference cell is traceable to the match Parameter Between a Photovoltaic Device and a
World Radiometric Reference (WRR, see Test Method E816), Photovoltaic Reference Cell
the resulting secondary reference cell will also be traceable to
E1021TestMethodforSpectralResponsivityMeasurements
the WRR.
of Photovoltaic Devices
E1039 Test Method for Calibration of Silicon Non-
1.4 This test method applies only to the calibration of a
ConcentratorPhotovoltaicPrimaryReferenceCellsUnder
photovoltaiccellthatdemonstratesalinearshort-circuitcurrent
3
Global Irradiation (Withdrawn 2004)
versus irradiance characteristic over its intended range of use,
E1040Specification for Physical Characteristics of Noncon-
as defined in Test Method E1143.
centrator Terrestrial Photovoltaic Reference Cells
1.5 This test method applies only to the calibration of a
E1125 Test Method for Calibration of Primary Non-
photovoltaic cell that has been fabricated using a single
Concentrator Terrestrial Photovoltaic Reference Cells Us-
photovoltaic junction.
ing a Tabular Spectrum
1.6 The values stated in SI units are to be regarded as
E1143Test Method for Determining the Linearity of a
standard. No other units of measurement are included in this
Photovoltaic Device Parameter with Respect To a Test
standard.
Parameter
1.7 This standard does not purport to address all of the
E1328Terminology Relating to Photovoltaic Solar Energy
3
safety concerns, if any, associated with its use. It is the
Conversion (Withdrawn 2012)
responsibility of the user of this standard to establish appro-
G173TablesforReferenceSolarSpectralIrradiances:Direct
priate safety and health practices and determine the applica-
Normal and Hemispherical on 37° Tilted Surface
bility of regulatory limitations prior to use.
1 2
This test method is under the jurisdiction of ASTM Committee E44 on Solar, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
GeothermalandOtherAlternativeEnergySourcesandisthedirectresponsibilityof contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Subcommittee E44.09 on Photovoltaic Electric Power Conversion. Standards volume information, refer to the standard’s Document Summary page on
CurrenteditionapprovedJune1,2010.PublishedJuly2010.Originallyapproved the ASTM website.
3
in1995.Lastpreviouseditionapprovedin2005asE1362-05.DOI:10.1520/E1362- The last approved version of this historical standard is referenced on
10. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1362 − 10
3. Terminology 4.1.4 The relative spectral distribution of the light source is
determinedusingaspectralirradiancemeasurementinstrument
3.1 Definitions—Definitions of terms used in this test
as specified in Test Method E973.
method may be found in Terminology E772 and in Terminol-
ogy E1328.
5. Significance a
...

This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:E1362–05 Designation:E1362–10
Standard Test Method for
Calibration of Non-Concentrator Photovoltaic Secondary
1
Reference Cells
This standard is issued under the fixed designation E1362; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers calibration and characterization of secondary terrestrial photovoltaic reference cells to a desired
reference spectral irradiance distribution. The recommended physical requirements for these reference cells are described in
Specification E1040. Reference cells are principally used in the determination of the electrical performance of a photovoltaic
device.
1.2 Secondary reference cells are calibrated indoors using simulated sunlight or outdoors in natural sunlight by reference to a
primary reference cell previously calibrated to the same desired reference spectral irradiance distribution.
1.3 Secondary reference cells calibrated according to this test method will have the same radiometric traceability as the of the
primary reference cell used for the calibration. Therefore, if the primary reference cell is traceable to the World Radiometric
Reference (WRR, see Test Method E816), the resulting secondary reference cell will also be traceable to the WRR.
1.4 This test method applies only to the calibration of a photovoltaic cell that demonstrates a linear short-circuit current versus
irradiance characteristic over its intended range of use, as defined in Test Method E1143.
1.5 This test method applies only to the calibration of a photovoltaic cell that has been fabricated using a single photovoltaic
junction.
1.6
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
E490 Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E772 Terminology Relating to Solar Energy Conversion
E816 Test Method for Calibration of Pyrheliometers by Comparison to Reference Pyrheliometers
E927 Specification for Solar Simulation for Photovoltaic Testing
E948 Test Method for Electrical Performance of Photovoltaic Cells Using Reference Cells Under Simulated Sunlight
E973 Test Method for Determination of the Spectral Mismatch Parameter Between a Photovoltaic Device and a Photovoltaic
Reference Cell
E1021 Test Method for Spectral Responsivity Measurements of Photovoltaic Devices
E1039 TestMethodforCalibrationofSiliconNon-ConcentratorPhotovoltaicPrimaryReferenceCellsUnderGlobalIrradiation
E1040 Specification for Physical Characteristics of Nonconcentrator Terrestrial Photovoltaic Reference Cells
E1125 Test Method for Calibration of Primary Non-Concentrator Terrestrial Photovoltaic Reference Cells Using a Tabular
Spectrum
E1143 Test Method for Determining the Linearity of a Photovoltaic Device Parameter with Respect To a Test Parameter
E1328 Terminology Relating to Photovoltaic Solar Energy Conversion
G173 Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37 Tilted Surface
1
This test method is under the jurisdiction of ASTM Committee E44 on Solar, Geothermal and Other Alternative Energy Sources and is the direct responsibility of
Subcommittee E44.09 on Photovoltaic Electric Power Conversion.
Current edition approved AprilJune 1, 2005.2010. Published May 2005.July 2010. Originally approved in 1995. Last previous edition approved in 19992005 as
E1362-99.E1362-05. DOI: 10.1520/E1362-105.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1362–10
3. Terminology
3.1 Definitions—Definitions of te
...

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