China's State Administration for Market Regulation (SAMR) and Standardization Administration of China (SAC) have issued GB/T 6495.12-2026, the country's first national standard specifically for perovskite photovoltaics. Titled "Photovoltaic devices - Part 12: Measurement method for current-voltage (I-V) characteristics of perovskite photovoltaic cells and modules," the standard takes effect March 1, 2027, and applies to I-V measurements of terrestrial single-junction perovskite PV cells and modules, with potential use as a reference for multijunction perovskite devices as well.
The standard is designed to address capacitive effects and transient responses that can distort I-V measurements of perovskite devices in ways silicon cells don't exhibit. It sets out rapid I-V measurement procedures alongside additional quasi-steady-state verification methods for use where needed, including maximum power point tracking, ten-point quasi-steady-state fitting, and the asymptotic method, with ten-point quasi-steady-state fitting designated as the arbitration method in case of disputed results. It also specifies requirements for forward and reverse scans, spectral-mismatch correction, stabilization procedures, and efficiency calculations based on both total and aperture area.
The standard follows China's revised national energy efficiency standards for the broader PV supply chain, covering stages from polysilicon and monocrystalline silicon through PV modules and inverters, which take effect January 1, 2027. Together, the two sets of standards mark a step toward the kind of standardized, comparable measurement protocols that the perovskite industry has lacked as it moves from lab-scale efficiency records toward bankable, mass-manufactured products.
