scope:

This part of IEC 60904 describes procedures for the measurement of the current-voltage (I-V) characteristics of bifacial photovoltaic devices in natural or simulated sunlight. It is applicable to single PV cells, sub-assemblies of such cells or entire PV modules. The requirements for measurement of I-V characteristics of standard (monofacial) PV devices are covered by IEC 60904-1 whereas this standard describes the additional requirements for the measurement of I-V characteristics of bifacial PV devices. NOTE: This standard may be applicable to PV devices designed for use under concentrated irradiation if they are measured without the optics for concentration and irradiated using direct normal irradiance and a mismatch 80 correction with respect to a direct normal reference spectrum is performed.