In the darkroom of the photovoltaic laboratory at Tsinghua University, doctoral student Chen is collecting the spectral response data of perovskite cells through the 7IS0503A-LED solar simulator of Saifan Optoelectronics. This light source, which precisely reproducing the AM1.5G spectrum, is providing a "ruler of light" for the cutting-edge exploration of thousands of scientific research teams around the world with an irradiation uniformity of ±1.5%. As the only domestic enterprise that masters 3A-level LED solar simulation technology, Saifan Optoelectronics is redefining the value benchmark of scientific research-level light source equipment with technological precision.
I. Spectral accuracy: The cornerstone of testing from nanoscale materials to macroscopic devices
The core advantage of the Sefan simulator lies in its "precise control of light" :
Full-band spectral coverage: Continuous spectral output from 400 to 1100nm, supporting AM0/AM1.5G/custom spectral modes, meeting the testing requirements from ultraviolet photocatalysis to near-infrared photovoltaic devices. In the research on gallium nitride optoelectronic devices at the Institute of Semiconductors, Chinese Academy of Sciences, the response speed of the device was successfully increased by 30% through the precise control of the 200-400nm ultraviolet spectrum by the Saifan equipment.
Dynamic calibration technology: Equipped with a real-time spectral feedback system, it automatically calibrates the light intensity and wavelength distribution every 10 seconds, solving the test deviation problem caused by the attenuation of traditional light sources over time. Long-term stability tests conducted by the New Energy Materials Laboratory of Peking University show that after continuous operation for 5,000 hours, the spectral matching degree of the Saifan equipment still maintains the A-level standard.
Micron-level spot control: Multiple spot sizes ranging from Φ20mm to Φ150mm are available for selection, with the minimum spot energy density reaching 1500W/㎡, meeting the precise testing requirements of micro-devices such as photovoltaic chips for wearable devices.
Ii. Research Scenarios: The "Light Partners" of Multi-Disciplinary Laboratories
1. Photovoltaic materials: Full-chain support from mechanism research to device fabrication
In the research on carbon-based perovskite solar cells by Professor Gao Chao's team at Zhejiang University, the quantum efficiency testing function (QE/IPCE synchronous acquisition) of the Sefan simulator plays a crucial role. By analyzing the response curves in the spectral range of 300-800nm, the team discovered the light absorption loss mechanism at the carbon electrode interface, and then optimized the electrode structure, increasing the battery efficiency from 18% to 23.5%. The related results were published in Nature Energy.
2. Photocatalysis: The "Photocatalyst" for Energy Conversion Research
In the CO₂ reduction reaction experiment at the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, the segmented regulation function of the ultraviolet-visible spectrum of the Saifan simulator (with an accuracy of ±2nm) helped researchers precisely locate the photocatalytic active sites. By simulating the energy distribution of ultraviolet light (accounting for 5%), visible light (45%), and near-infrared light (50%) in sunlight, the team successfully increased the methane generation rate by 40%, and the related catalyst materials have entered the pilot stage.
3. Photobiology: The "Light Code Decoder" of Life Sciences
At the State Key Laboratory of Genetic Engineering of Fudan University, the Saifan simulator is used in the research of plant photosensitive pigments. By simulating the spectral ratios of different seasons (such as high infrared in winter and high blue light in summer), researchers have discovered the regulatory mechanism of the change in light quality ratio on the expression of flowering genes in Arabidopsis thaliana. The related achievements provide a theoretical basis for the design of intelligent greenhouse light control systems.
Iii. Technical Services: Building a "laboratory-level" optical testing ecosystem
Saifan Optoelectronics has launched the "Light Enjoyment Service Plan" for scientific research customers:
Customized spectral solution: A 200-300nm deep ultraviolet spectral module was specially developed for the testing of new scintillation materials at the Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, filling the domestic gap in high-precision simulation of this band.
Data calibration service: Jointly build a spectral calibration platform with the National Institute of Metrology of China to provide annual equipment calibration for university laboratories, ensuring that test data is in line with international standards.
Research collaboration network: The "Saifanguang Science Foundation" has been established, providing support for 10 cutting-edge research projects each year. Currently, joint laboratories have been set up with 12 985 universities.
Iv. Industry Voice: The True Choice of Researchers
The spectral stability of the Sefan simulator is an important guarantee for us to publish high-level papers. Professor Wang from the School of Modern Engineering and Applied Sciences, Nanjing University: "The software control module of the equipment supports Python secondary development and is perfectly integrated into our automated testing platform." From equipment selection to the design of the experimental plan, the technical team of Saifan provided full support, which was crucial to the progress of the research. \ "" - Dr. Chen, a researcher at the Solar Energy Research Center of the University of California, Berkeley
As scientific research competition enters an era where "data accuracy determines the height of achievements", the Sefan LED solar simulator is becoming the "standard light configuration" in laboratories around the world. From the characterization of nanoscale materials to the performance testing of macroscopic devices, this precisely controllable "artificial sunlight" is illuminating every innovative possibility in the field of new energy.
Link Microblog
