The steady-state performance calibration and aging reliability tests of large-sized photovoltaic panels, large-area thin-film devices, and complete-panel components have long faced industry pain points such as insufficient light irradiation area, large stitching errors, thermal source interference, and poor long-term stability. Traditional small-sized simulators require multiple displacement and stitching tests, which accumulate systematic errors and have poor data repeatability, unable to meet the needs of integrated detection of entire samples. Traditional large-sized xenon lamp equipment has high thermal radiation, high energy consumption, short lamp lifespan, and high operation and maintenance costs, which easily cause sample temperature rise drift and device performance distortion, making it difficult to meet the long-term stable testing and industrial batch quality inspection requirements for perovskite tandem cells, new thin-film photovoltaics, and large-area photovoltaic materials. This restricts the industrialization and quality improvement of high-end photovoltaic devices.

Deeply engaged in the field of precise daylight simulation and photovoltaic testing technology, Saifan Optoelectronics relies on its self-developed multi-channel LED spectral fitting technology, large-area compound eye uniform light optical architecture, and closed-loop dynamic light intensity compensation algorithm to launch a large-area 3A-level LED steady-state solar light simulator. Strictly following the international authoritative standards of IEC 60904-9:2020 and ASTM E927, it achieves triple 3A top-level indicators of spectral matching, irradiation uniformity, and time stability, with the core advantages of ultra-large uniform light spot, LED cold-state without thermal interference, 10,000-hour ultra-long steady-state, and low energy consumption without operation and maintenance. This solves the problem of integrated precise testing of large-area photovoltaic samples and provides standardized and traceable large-area steady-state light solutions for university front-line research, enterprise pilot testing and iteration, and industrial mass production quality control.

Triple 3A full-level compliance, authoritative and compliant testing benchmark

The equipment relies on the seventh-generation intelligent spectral fitting algorithm and high-precision optical color matching technology to achieve full-dimensional 3A top-level performance compliance, perfectly aligning with international photovoltaic testing standards. The entire machine covers a wide spectral range of 350?1100nm, accurately replicates the AM1.5G standard daylight energy distribution, with spectral matching strictly controlled within the 0.875?1.125 standard range, and the full-band spectral reproduction exceeds 97%. It can precisely match the light response characteristics of all types of large-area photovoltaic devices such as crystalline silicon, cadmium telluride, CIGS, and perovskite tandem, eliminating spectral deviation-induced test distortion and performance misjudgment from the source.

Equipped with self-developed large-area all-coverage uniform light system, relying on the multi-compound eye lens array optical optimization design, the irradiation uniformity within the ultra-large effective irradiation area is ≤±3%, with no attenuation, no dark areas, and no hot spots from the center to the edge, enabling uniform irradiation of the entire sample at one time, completely avoiding stitching test errors; paired with a high-speed FPGA closed-loop feedback control system, the time stability is ≤±0.2%/h, supporting continuous stable light output for thousands of hours, with no light intensity drift or spectral attenuation during long-term operation, and test data can be directly compared with TÜV and UL international certification standards, meeting the strict requirements of high-end research traceability, project conclusion, and product compliance testing.

LED cold light source steady-state output, eliminating thermal interference for precise sample testing

Different from the inherent shortcomings of traditional large-sized xenon lamp equipment, which have high thermal radiation, high energy consumption, and short lifespan, this equipment adopts a full LED array continuous steady-state light emission architecture, requiring no preheating and starting to be stable immediately, supporting 24-hour uninterrupted continuous illumination, perfectly adapting to harsh conditions such as long-term aging, continuous MPPT power tracking, and steady-state efficiency calibration. Purely cold light operation has no additional infrared thermal radiation, no sample temperature rise interference throughout the process, from the root avoiding thermal drift causing battery parameter deviation and device performance distortion, especially suitable for high-precision testing of temperature-sensitive perovskite, organic photovoltaics, and other new devices.

LED light sources have an extremely long lifespan, with a durability of up to 100,000 hours, compared to traditional xenon lamp equipment, no frequent replacement of consumables, and a significant reduction of over 85% in annual operation and maintenance costs. The overall energy consumption of this machine is 55% lower than that of traditional equipment. It combines the stability of industrial-level continuous operation with the economic efficiency of long-term use, completely solving the industry pain points of high energy consumption, high failure rate, and cumbersome maintenance of traditional large-format equipment.

Integrated irradiation over a large area, highly efficient for adapting to large plate sample testing

The equipment is equipped with a customized large-format uniform light module, which can be adapted to output large-sized uniform light spots according to requirements, enabling one-time coverage testing of photovoltaic large plates, entire batteries, and small and medium-sized components. There is no need for displacement assembly or zone detection, eliminating the errors in alignment and regional testing deviations from the root, and significantly improving the testing efficiency and data consistency of large-area samples. The uniform light reception characteristics over the entire area allow for precise screening of local process non-uniformity, coating deviation, hidden defects, and band response differences in large plate samples, and provide precise feedback on the subtle performance fluctuations of key processes such as diffusion, etching, and coating.

The equipment is broadly compatible with various large-size photovoltaic test samples, covering large silicon photovoltaic plates, wide-band thin film batteries, stacked photovoltaic components, large-scale photocatalytic materials, and photovoltaic detection plates, and perfectly adapting to all scenarios such as university large-scale material mechanism research, enterprise pilot process verification, production line batch grading quality inspection, and third-party authoritative certification testing. It is an efficient, precise, and energy-saving core equipment for large-area photovoltaic testing.

Intelligent closed-loop light control, fully automatic and efficient standardized testing

Equipped with a dedicated intelligent measurement and control system from Sefan, integrating real-time light intensity monitoring, millisecond-level closed-loop dynamic compensation, one-click spectral calibration, stable state locking, automatic data archiving, and standardized report output. Relying on the AI adaptive light intensity compensation algorithm, the equipment can capture small light intensity fluctuations and spectral offsets during long-term operation in real time, perform millisecond-level dynamic correction, and lock the standard irradiation state throughout the process. It eliminates the need for repeated light adjustment and calibration by humans, completely avoiding human system errors, ensuring the consistency, repeatability, and traceability of each set of test data.

Supports customizing irradiance, light duration, cycle test period, scanning step, etc. The irradiance intensity can be continuously adjusted in the range of 0.1?2 SUN, suitable for weak light response, standard calibration, and strong light overload conditions. It can seamlessly link with the IV testing system, EL defect detection module, precise displacement platform, and high-temperature and low-temperature temperature control components to achieve integrated automatic operation of light simulation, performance testing, defect screening, and data analysis, significantly improving the batch testing efficiency of large-area samples.

Modular expansion architecture, suitable for high-end research and industrial customization

The equipment adopts an open modular design, with sufficient functional upgrade and customization interfaces, fully adaptable to high-end research and industrial strict scenarios. It can be expanded with the AM0 space spectrum switching module to accurately simulate the space irradiation environment, meeting the performance calibration requirements of aerospace-grade large-area photovoltaic devices; it can be combined with atmosphere control, automatic scanning Mapping components to achieve multi-field coupling dynamic testing and global performance distribution detection; it can be stacked with multi-channel synchronous testing modules to adapt to parallel detection of batch samples, fully covering basic characterization, process optimization, and frontier innovation research at multiple levels.

Domestic precision self-developed, high-performance cost-effective alternative to imported equipment

The core LED light source array, large-format uniform light optical system, and dual-loop steady-state light control algorithm are all independently developed and controllable. The spectral restoration accuracy, large-area uniformity, and long-term stable state stability are all benchmarked against imported high-end large-format 3A simulators. At the same time, it completely solves the industry pain points of high-priced, long delivery cycle, delayed after-sales response, difficulty in customizing working conditions, and extremely high maintenance costs of imported equipment, with core advantages such as cold-state no thermal interference, large-area integrated testing, ultra-long stable state, ultra-low energy consumption, no frequent maintenance, and short delivery.

The manufacturer offers on-site installation and commissioning, professional technical training, lifetime technical support, personalized condition customization one-stop service. This significantly reduces the equipment procurement and iteration costs for research institutions and new energy enterprises, helps achieve the domestic substitution of large-scale high-end photovoltaic testing equipment, and empowers the photovoltaic industry to achieve scale, precision, energy-saving and quality improvement and upgrading.

Large-area stable light foundation, empowering efficient and precise photovoltaic testing

Standardized and precise testing of large-area devices relies on uniform, stable and interference-free standard light. The Sefan large-area 3A-level LED steady-state solar light simulator, with triple 3A top-level precision, super large integrated irradiation area, LED cold-state steady-state technology, energy-saving long-term operation, and intelligent minimalist control, provides hard-core advantages in all scenarios such as large-area photovoltaic device calibration, photovoltaic material characterization, long-term reliability aging test, and industrial batch quality inspection, providing solid and reliable precise light support for the cutting-edge research and innovation of new energy and the large-scale industrialization development.