scope:

This part of IEC 63202 describes procedures for the measurement of current-voltage (I-V) characteristics of crystalline silicon bifacial photovoltaic (PV) cells for both laboratory and mass production applications.

This document is intended to be used for measurement of individual unencapsulated bifacial PV cells, in addition to the requirements described in IEC 60904-1 and differentiating from IEC TS 60904-1-2 which is more applicable to encapsulated PV device. Specific requirements on bifacial reference cells and calibration of solar simulators are also defined to provide useful guidance for the proposed methods.

The bifacial I-V characteristics contain front standard test condition (STC), rear STC and bifacial STC results for the bifacial PV cells under test. Thus, bifaciality as well as the power generation capability under single-side or bifacial irradiation are evaluated.

NOTE This document does not apply to tandem or multi-junction bifacial PV cells.