SS-LED220: PVK. Si Stacked Battery Research Special Precision Spectral Simulator

Pain Point Analysis of PVK/Si Stacking Research

In the research of perovskite/crystalline silicon (PVK/Si) stacked solar cells, spectral response separation and long-term testing stability are the two core challenges. The upper layer of perovskite is sensitive to visible light, while the lower layer of crystalline silicon mainly absorbs the near-infrared region (800-1200 nm). Traditional simulators are difficult to accurately separate the responses of each sub cell, and the perovskite layer often faces thermal degradation issues.

Enlitech's newly launched SS-LED220 A++level arbitrary spectrum LED solar simulator is specifically designed to address these issues. Our new product provides a precise measurement solution for PVK/Si stacked battery research.

Accurate control capability of A++level spectra

Our newly launched SS-LED220 has A++level arbitrary spectral capability, covering a spectral range of 350 nm to 1200 nm. The software can independently adjust the intensity of LED light sources in different bands, accurately simulating the ratio of sunlight in visible and near-infrared light.

This innovative feature supports single function characterization. Researchers can measure the response of the upper PVK or lower Si layer separately, accurately analyze the bottleneck of series efficiency, and gain a deeper understanding of the light absorption and carrier collection capabilities of each layer. The spectral stitching fitting method ensures adjustable spectral precision and far exceeds the requirements of the IEC 60904-9 A+level standard.

Overcoming hysteresis effect and steady-state power testing

The carrier dynamics of perovskite cells lead to slow time response and hysteresis effects, making accurate measurement of steady-state power output (SPO) a challenge. Our newly developed SS-LED220 provides A++level time instability (<0.5%), ensuring long-lasting, continuous, and stable illumination with extremely low light intensity drift over time.

This new product supports Light Soaking (MPPT) measurement function and timing programming control. Pre Light Soaking can be integrated for IV testing. By measuring the slow IV curve for about one minute, the hysteresis effect is effectively overcome, and real and stable output performance data of the stacked battery is obtained.

Study on Multi Intensity Carrier Dynamics

PVK/Si double junction cells exhibit different carrier dynamics under different light intensities. Our latest SS-LED220 can quickly program the light intensity from extremely low to high (up to 1.5 Sun, or 1500 W/m ²) without changing the spectrum.

The software can set up 20 different light intensities, automatically perform IV scanning and 6 parameter analysis, and also supports custom multi segment variable light intensity measurement. This helps to deepen the study of carrier recombination behavior, fill factor (FF) loss mechanism, and stability degradation kinetics. And our new product SS-LED220 uses LED cold light source to avoid excessive infrared thermal effect, which is particularly suitable for heat sensitive perovskite layers.

Large area uniform lighting and testing software

Our newly launched simulator provides a large illuminated area of>220 mm × 220 mm, with uneven irradiation space reaching Grade A (<2%), ensuring consistent illumination of the sample. The spectral matching degree of SS-LED220 is AM1.5G A++level (<6.25% mismatch degree), which is particularly suitable for efficiency certification of double or multi junction batteries.

The KA Viewer software provides functions such as ideal factor n, reverse saturation current density J0, FF loss measurement and analysis, and Dior model fitting. The IVS-KA6000 software supports fully automatic IV measurement, multi-channel testing (up to 32 channels), as well as forward and reverse scanning functions.

Professional New Product Solution for Stacked Battery Research

The spectral controllability, high stability, cold light source design, and comprehensive support for single/double junction testing of the SS-LED220 simulator newly launched by Guangyan Technology can help the research team analyze the limiting mechanism of double junction batteries more accurately, accelerate efficiency improvement and reliability verification.

Contact Guangyan Technology to learn how our newly launched SS-LED220 can provide professional testing support for your PVK/Si stacked battery research.