IEC 60904-7:2019 is available as IEC 60904-7:2019 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 60904-7:2019 describes the procedure for correcting the spectral mismatch error introduced in the testing of a photovoltaic device, caused by the mismatch between the test spectrum and the reference spectrum (e.g. AM1.5 spectrum) and by the mismatch between the spectral responsivities (SR) of the reference device and of the device under test and therewith reduce the systematic uncertainty. This procedure is valid for single-junction devices but the principle may be extended to cover multi-junction devices. The purpose of this document is to give guidelines for the correction of the spectral mismatch error, should there be a spectral mismatch between the test spectrum and the reference spectrum as well as between the reference device SR and the device under test SR. The calculated spectral mismatch correction is only valid for the specific combination of test and reference devices measured with a particular test spectrum. This fourth edition cancels and replaces the third edition published in 2008. The main technical changes with respect to the previous edition are as follows:
- For better compatibility and less redundancy, the clause “Determination of test spectrum” refers to IEC 60904-9.
- The spectral mismatch factor is called SMM instead of MM to enable differentiation to the angular mismatch factor AMM and spectral angular mismatch factor SAMM.
- Formulae for the derivation and application of the spectral mismatch factor SMM are added.
- Links to new standards are given, e.g. concerning multi-junction devices.
- Corrected wording (responsivity instead of response and irradiance instead of intensity).
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EN 60891:2010 Aurinkosähkölaitteet. Mitattujen virta-jännite-ominaisuuksien lämpötila- ja säteilyolosuhteiden korjausmenetelmä
EN 60904-1-1:2017 Photovoltaic devices - Part 1-1: Measurement of current-voltage characteristics of multi-junction photovoltaic (PV) devices
EN 60904-2:2015 Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices
EN 60891:2010 Aurinkosähkölaitteet. Mitattujen virta-jännite-ominaisuuksien lämpötila- ja säteilyolosuhteiden korjausmenetelmä
EN 60904-1-1:2017 Photovoltaic devices - Part 1-1: Measurement of current-voltage characteristics of multi-junction photovoltaic (PV) devices
EN 60904-2:2015 Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices
EN 60904-8-1:2017 Photovoltaic devices - Part 8-1: Measurement of spectral responsivity of multi-junction photovoltaic (PV) devices
EN 60904-8:2014 Photovoltaic devices - Part 8: Measurement of spectral responsivity of a photovoltaic (PV) device
EN IEC 60891:2021 Photovoltaic devices - Procedures for temperature and irradiance corrections to measured I-V characteristics
EN IEC 60904-1:2020 Photovoltaic devices - Part 1: Measurement of photovoltaic current-voltage characteristics
EN IEC 60904-2:2023 Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices
EN IEC 60904-3:2019 Photovoltaic devices - Part 3: Measurement principles for terrestrial photovoltaic (PV) solar devices with reference spectral irradiance data
EN IEC 60904-9:2020 Photovoltaic devices - Part 9: Classification of solar simulator characteristics
EN ISO 9288:1996 Thermal insulation - Heat transfer by radiation - Physical quantities and definitions (ISO 9288:1989)
IEC/TS 61836:2016 Solar photovoltaic energy systems - Terms, definitions and symbols