1. Scope

1.1 This test method is intended to be used for calibration and characterization of primary terrestrial photovoltaic reference cells to a desired reference spectral irradiance distribution, such as Tables G 173. The recommended physical requirements for these reference cells are described in Specification E 1040. Reference cells are principally used in the determination of the electrical performance of photovoltaic devices.

1.2 Primary photovoltaic reference cells are calibrated in natural sunlight using the relative spectral response of the cell, the relative spectral distribution of the sunlight, and a tabulated reference spectral irradiance distribution.

1.3 This test method requires the use of a pyranometer that is calibrated according to Test Method E 816, which requires the use of a pyrheliometer that is traceable to the World Radiometric Reference (WRR). Therefore, reference cells calibrated according to this test method are traceable to the WRR.

1.4 This test method is a technique that may be used instead of the procedures found in Test Method E 1362. This test method offers convenience in its ability to characterize a reference cell under any spectrum for which tabulated data are available. The selection of the specific reference spectrum is left to the user.

1.5 This test method applies only to the calibration of a photovoltaic cell that shows a linear dependence of its short-circuit current on irradiance over its intended range of use, as defined in Test Method E 1143.

1.6 This test method applies only to the calibration of a reference cell fabricated with a single photovoltaic junction.

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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

E772 Terminology of Solar Energy Conversion

E816 Test Method for Calibration of Pyrheliometers by Comparison to Reference Pyrheliometers

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

E1040 Specification for Physical Characteristics of Nonconcentrator Terrestrial Photovoltaic Reference Cells

E1328 Terminology Relating to Photovoltaic Solar Energy Conversion

E1362 Test Method for Calibration of Non-Concentrator Photovoltaic Secondary Reference Cells

G173 Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37 Tilted Surface

Keywords

calibration; electrical performance; photovoltaic devices; primary terrestrial photovoltaic reference cells; spectral irradiance; spectral response; terrestrial photovoltaic reference cells; Electrical performance--solar devices; Illumination--solar devices; Irradiance/irradiation--solar; Calibration--nuclear analysis instrumentation; Linear changes/linearity; Nonconcentrator terrestrial photovoltaic reference cells; Outdoor measurement; Performance--photovoltaic devices/applications; Photovoltaic (PV) power systems; Primary (non-concentrator/terrestrial) photovoltaic devices; Pyrheliometers; Reference solar spectrum; Relative spectral response/distribution; Short circuit measurement; Solar collectors; Solar spectral irradiance; Spectral data--solar devices; Sunlight/monochromatic light exposure; Tabulated reference spectrum irradiance distribution; Terrestrial photovoltaic reference cells;

ICS Code

ICS Number Code 27.160 (Solar energy engineering)

DOI: 10.1520/E1125-05

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