The spectral response characteristics, photon conversion efficiency, and band matching performance of solar cells are the core bases for determining material compatibility, analyzing carrier transport mechanisms, and optimizing battery structure processes. Traditional integrated testing equipment has fixed functions and a fixed architecture, making it impossible to add or remove test modules as needed, and it is difficult to balance basic spectral testing and high-level mechanism research. Most equipment has a single testing dimension and only supports the collection of a single parameter, unable to link multi-dimensional data such as spectral response, quantum efficiency, and integrated short-circuit current. Facing the differentiated testing needs of perovskite tandem cells, thin-film photovoltaics, and new wide-spectrum devices, this system is prone to problems such as missing data dimensions,片面 machine analysis， and low equipment reusability， severely restricting the iterative upgrading of new photovoltaic materials and the refinement of device process technology.

Deeply engaged in the field of precise characterization of photovoltaic photovoltaics， Saifan Optoelectronics relies on its independently controllable monochromatic light dispersion technology， phase-locked amplification for weak signal detection， and modular integration configuration technology to launch a modular solar cell spectral performance testing system. Breaking the limitations of the fixed architecture of traditional equipment， it adopts an open modular combination design， allowing for free combination of functional modules as needed， and achieving full-dimensional spectral performance testing and machine analysis of solar cells in one step. With the advantages of flexible configuration， precise parameter measurement， all-round analysis， and high adaptability expansion， it provides standardized and traceable spectral testing solutions for university front-line research， enterprise pilot research and development， photovoltaic device process optimization， and product performance quality control.

Flexible modular configuration， one machine meets all levels of testing needs

The core advantage of the system is its open modular reconfigurable architecture， which completely overturns the drawbacks of the fixed functions of traditional integrated equipment. The light source module， dispersion module， detection module， and function expansion module can be freely combined， selected as needed， and flexibly upgraded. The basic version can meet basic research needs such as spectral response testing， quantum efficiency detection， and integrated current calculation， while the high-level expansion can add advanced functions such as micro-area scanning， variable temperature testing， atmosphere control， and steady-state linkage testing. Without replacing the entire equipment， it can achieve full coverage of testing levels from basic characterization to frontier mechanism research.

The modular design balances flexibility and practicality， and can be customized with exclusive test configurations according to the testing characteristics of different types of devices such as crystalline silicon cells， thin-film cells， perovskite tandem cells， and compound semiconductor cells， avoiding functional redundancy and equipment waste， and significantly improving equipment reusability and scene adaptability， perfectly adapting to laboratory gradient research， enterprise differentiated process iteration， and batch detection of multiple types of samples in various scenarios.

Full-dimensional spectral precise analysis， deep decoding of photovoltaic conversion mechanism

The system is equipped with high-precision monochromatic light dispersion and phase-locked amplification detection architecture， which can accurately complete core parameter tests such as spectral response rate SR， external quantum efficiency EQE/IPCE， and internal quantum efficiency IQE， and simultaneously output band response curves， photon conversion efficiency graphs， and key data such as integrated short-circuit current density， achieving full-dimensional quantitative characterization of solar cell spectral performance. It can accurately capture the absorption， separation， and conversion differences of photons in different wavelengths， clearly identify defects in device band response， material bandgap width deviation， and carrier recombination loss， etc.

Compared with traditional single electrical testing equipment， this system can deeply analyze the performance shortcomings of the battery from the spectral dimension， accurately determine the optimal response wavelength of the device， weak light response characteristics， and spectral matching accuracy， providing refined and visualized data support for battery material modification， layered structure optimization， band matching process iteration， and tandem battery ratio design， filling the gap in microscopic mechanism research that cannot be covered by conventional IV testing.

High-precision weak signal detection， stable and traceable data

The system is equipped with its own high-precision grating dispersion system， with precise wavelength scanning and high spectral resolution， capable of achieving continuous scanning over a wide range of wavelengths， without spectral discontinuity or interference from stray light， accurately replicating the single-color excitation conditions of different wavelengths. Combined with ultra-weak signal phase-locked amplification and acquisition technology, it effectively blocks environmental stray light and electromagnetic interference, accurately captures the tiny photocurrent signals of low quantum efficiency and weak response photovoltaic devices, and completely solves the industry pain points of weak signal acquisition distortion, large data noise, and poor repeatability of traditional equipment.

The entire machine has high testing accuracy and excellent stability, and the test data can be precisely compared with international standards. The integral current and steady-state IV test current are highly consistent. The data consistency and traceability are extremely strong, which can directly support high-end scientific research paper data, project conclusion, product compliance certification and process benchmarking analysis, meeting the strict requirements of high-precision scientific research and standardized quality inspection in the photovoltaic field.

It is compatible with a wide range of samples and can test all types of photovoltaic devices.

The system adopts a universal sample testing architecture, which is compatible with various forms and sizes of photovoltaic samples, and can seamlessly cover micro battery chips, conventional single-cell panels, large-area photovoltaic plates, and medium and small module components, etc. It fully adapts to crystalline silicon photovoltaic, cadmium telluride/CIGS thin-film batteries, gallium arsenide compound batteries, and perovskite tandem batteries, etc. as mainstream new photovoltaic devices, and covers multiple scenarios such as small sample mechanism research, pilot sample calibration, module performance detection.

It is equipped with a professional light-shielding dark box to isolate external environmental light interference. It has a precise adjustable sample displacement platform and probe fixture, which can accurately locate and test different specifications of samples, and support micro-area point testing and full-spectrum mapping scanning. It can precisely screen local performance unevenness, band response differences, and process defect distribution of samples, and fully meet the requirements of precise characterization.

Intelligent and fully automatic measurement and control, simple operation and efficient parameter output

The system is equipped with exclusive intelligent measurement and control software from Saifan, which integrates one-click band scanning, automatic spectral calibration, intelligent signal noise reduction, parameter automatic fitting, data batch archiving, standardized report output, and other intelligent functions. There is no need for manual section debugging, manual calculation correction. The system can automatically complete band adaptation, signal acquisition, data normalization processing, and completely avoid human operation errors, significantly improving testing efficiency and data consistency.

It supports customizing scanning bands, sampling steps, integration time, test points, etc. It can generate spectral response curves, quantum efficiency maps, and automatically compare the performance differences of multiple samples. The original test data is retained. The operation threshold is low, and the automation level is high. Novices can quickly master and complete high-precision standardized testing, suitable for frequent scenarios such as regular scientific research experiments, batch sample screening, process iteration comparison, etc.

Seamlessly linked with the supporting system to build an integrated photovoltaic testing system

The system can be seamlessly linked and work collaboratively with all 3A steady-state solar light simulators and solar cell I-V testers from Saifan, achieving integrated synchronous testing of spectral performance, steady-state photovoltaic performance, and electrical parameters. A complete photovoltaic device full-dimensional performance evaluation system is formed. It can expand modules such as high and low temperature control, atmosphere regulation, and automatic displacement scanning to achieve dynamic spectral testing under multi-field coupling conditions, deeply exploring the battery performance attenuation mechanism under complex conditions, and fully covering the requirements of basic characterization, dynamic monitoring, reliability research, and process optimization throughout the process.

It is independently developed by domestic experts and has high cost-effectiveness, replacing imported equipment.

The core spectrometry architecture, phase-locked detection unit, modular configuration algorithm, and intelligent measurement and control software are all independently developed and controllable. The testing accuracy, spectral resolution, and signal stability of the entire system are fully benchmarked against imported similar high-end spectral testing equipment. At the same time, it completely solves the industry pain points of high-priced imported equipment, fixed functions, lagging after-sales response, high operation and maintenance costs, and difficult customization and modification, and has the core advantages of modular flexible expansion, full-spectrum analysis, high sensitivity for weak signals, stable operation, convenient operation and maintenance, and short delivery time.

The manufacturer offers one-stop services including on-site installation and commissioning, professional technical training, lifetime technical support, and personalized module customization. This significantly reduces the equipment procurement and iteration costs for universities, research institutions, and new energy enterprises, facilitating the domestic substitution of photovoltaic spectral testing equipment and enabling the upgrading of the photovoltaic industry towards refinement, high-endization, and standardization.

Decomposing the spectral response pattern and empowering the refined iteration of photovoltaic technology

Accurate spectral machine analysis is the core key to breakthroughs in photovoltaic device performance. The Sefan modular solar cell spectral performance testing system, with its modular flexible configuration, full-dimensional spectral analysis, high-sensitivity weak signal detection, intelligent and efficient measurement and control, and expandable integrated architecture, deeply decodes the photon conversion mechanism and band matching characteristics of various photovoltaic devices, providing precise, stable, and traceable spectral testing support for the research and development of new photovoltaic materials, optimization of new processes, and industrialization of new devices, and continuously empowering high-quality innovation and development in the new energy field.