Amid the wave of accelerated iteration in the global new energy industry, the accuracy and efficiency of optical testing technology are becoming key variables for enterprises to break through R&D bottlenecks and seize market high ground. The LED solar simulator of Beijing Saifan Optoelectronics, a "light testing solution" developed with 20 years of optoelectronic technology accumulation, not only addresses the inherent pain points of traditional equipment but also becomes the core equipment for research institutions and industrial enterprises to seize the opportunities of the new energy revolution.
Addressing industry pain points: Redefining optical testing standards
Traditional solar simulators have long been confronted with three major industry challenges: insufficient spectral matching leads to distorted test data, poor equipment stability affects experimental repeatability, and high operating costs squeeze corporate profits. Saifan Optoelectronics has achieved a breakthrough through three major technological innovations:
Dynamic spectral calibration technology completely solves the problem of spectral drift. The built-in 128-channel spectral sensor conducts A full-band scan of the light source every 10 seconds. Combined with AI algorithms, it adjusts the power of each LED module in real time, ensuring that the spectral matching degree in the 400-1100nm band remains stable at the A + level (0.875-1.125) for a long time. A comparative experiment conducted by a certain photovoltaic enterprise shows that after using the equipment from Saifan, the efficiency test deviation of the same batch of solar cells dropped from ±0.8% to ±0.3%, completely eliminating the product classification errors caused by equipment errors.
The honeycomb uniform light system enhances spatial uniformity to ±1.8%. Through a secondary optical system composed of 196 micro-lenses, the light intensity distribution difference within the Φ70mm test area is controlled at the industry-leading level. In the large-scale preparation research of perovskite solar cells, this characteristic enables researchers to precisely distinguish the performance differences of the materials themselves from the test errors caused by uneven light exposure, accelerating the industrialization process of new types of cells.
Solid-state light source technology brings cost advantages throughout the entire life cycle. The lifespan of the 100,000-hour LED light source is five times that of traditional xenon lamps, and the rated power of 650W reduces energy consumption by 40% compared with similar equipment. According to the calculation of a certain testing institution, after the introduction of Saifan equipment, the cumulative savings in light source replacement costs and electricity fees over the past three years are equivalent to 60% of the equipment procurement costs, truly achieving the goal of "being able to afford, use and use well".
Empowering R&D breakthroughs: Accelerating the transition of new technologies from the laboratory to the market
During the critical period when photovoltaic technology is upgrading to next-generation technology routes such as perovskite/silicon tandem and heterojunctions, Saifan simulators have become the "light science engine" for research and development breakthroughs:
The multi-dimensional testing module meets the demands of cutting-edge research. It supports rapid switching of 8 standard spectra including AM0/AM1.5G/AM1.5D, and in combination with a high and low temperature test chamber ranging from -40 ℃ to 150℃, it can simulate the lighting conditions in extreme environments such as space, plateau and desert. A certain team from the Chinese Academy of Sciences has successfully developed an efficient anti-attenuation battery structure suitable for low-latitude strong light environments by taking advantage of this feature. The related technology has been applied to photovoltaic power station projects in Southeast Asia, reducing the cost per kilowatt-hour by 0.03 yuan.
Millisecond-level response testing captures transient optical physical processes. The response speed of 10μs enables the device to accurately record the carrier migration trajectory of photovoltaic materials after being excited by light, providing key data for solving the stability problem of perovskite materials. The "interface charge trap repair mechanism" discovered by a team from a certain university based on this function has enabled the operating life of perovskite batteries to exceed 1,500 hours. The paper was published in Nature Photonics.
The automated testing platform enhances R&D efficiency. The LabView-compatible software equipped can preset over 200 test schemes and supports data linkage analysis with devices such as XRD and SEM. After the introduction of a certain enterprise's R&D center, the material screening cycle for new batteries was shortened from two weeks to three days, and the annual return on R&D investment increased by 35%.
Driving industrial Upgrading: Building a "Light Quality Defense Line" for Photovoltaic Manufacturing
As the photovoltaic industry enters the refined competition stage of "GW-level capacity and 100-level efficiency", Saifan simulators have become the core node of intelligent manufacturing:
The online detection system realizes the full-process quality control of the production line. By real-time integration with the MES system, the test data of each solar cell is automatically associated with the production batch information, forming a full-chain quality traceability from the purity of silicon material to the final efficiency. After A certain TOPCon battery factory applied this system, it successfully identified the influence law of temperature fluctuations in the PECVD process on battery efficiency, increasing the A-grade product rate from 88% to 93%.
The remote operation and maintenance platform ensures the 24/7 operation of the equipment. The built-in Internet of Things module can monitor key parameters such as light source attenuation and heat dissipation system in real time, and issue early warnings for potential faults. In coordination with the 7 spare parts centers laid out by Saifan across the country, the average time to repair (MTTR) of the equipment is controlled within 4 hours, which is 60% shorter than the industry average, ensuring that the annual effective operation time of the production line exceeds 8,000 hours.
International standard certification capabilities help enterprises go global. The equipment has passed international standard certifications such as IEC 60904-9 and JIS C 8912, and the test data have been recognized by institutions such as German TUV and American UL. Taking advantage of this, a certain component enterprise successfully entered the European distributed photovoltaic market, with its export volume increasing by 42% year-on-year in 2024.
Industry Case: A Full-chain Witness from technological breakthroughs to commercial Success
At a photovoltaic demonstration base in Qinghai, Saifan mobile simulators provide outdoor performance evaluations for 50 different technical routes of components. By simulating the solar altitude Angle and spectral distribution in different seasons, the actual power generation gain of each component was precisely calculated, helping the investor select the optimal plan, which enabled the power station's first-year power generation to exceed expectations by 8%.
A certain hydrogen energy enterprise utilized the AM1.5G + ultraviolet enhancement mode of Saifan equipment to optimize the reactor design of the photocatalytic hydrogen production system, increasing the hydrogen production rate per unit light area by 27%. This successfully reduced the green hydrogen production cost to 35 yuan per kilogram, reaching the threshold for commercial application.
As the competitive focus of the new energy industry shifts from "scale expansion" to "technology premium", Saifan LED solar simulators are serving as "light testing infrastructure", providing core support for enterprises to build technological barriers, reduce production costs, and expand global markets. Choosing Saifan is not merely about choosing a piece of equipment, but also about choosing a well-tested light testing methodology and a competitive solution to seize the initiative in the new energy revolution.
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