GB/T 38200-2019 in English

Standard background and technology evolution analysis

Background:Solar cell quantum efficiency test is a key indicator for evaluating the performance of photovoltaic devices and directly affects the photoelectric conversion efficiency. With the increasing demand for high-efficiency solar cells in the aerospace field, GB/T 38200-2019 came into being, filling the gap in related fields in China.

Term analysis and practical application

Quantum efficiency (EQE):It is defined as the proportion of electron-hole pairs successfully generated in the incident photons. When testing, attention should be paid to environmental conditions, such as precise control of temperature and irradiance.

Implementation Recommendations

• Staff Training: Ensure that operators are familiar with the principles of quantum efficiency testing and equipment calibration methods.
• Equipment Calibration: Regularly calibrate measuring instruments, such as phase-locked amplifiers and irradiance detectors, to ensure data accuracy.
• Data Analysis: Use standardized calculation methods and refer to formula (5) to accurately calculate short-circuit current density.
• Report Writing: Completely record test conditions and result curves in accordance with standard requirements to facilitate subsequent analysis and verification.