Application of Electronic-grade Organic Acid Potassium in Solar Panel Production

In solar panel (photovoltaic module) manufacturing, the cleanliness of silicon wafers, the quality of perovskite films, and the light transmittance of photovoltaic glass directly determine the photoelectric conversion efficiency and service life. Critical processes (silicon wafer cleaning, interface modification, and glass modification) require stringent control of raw material purity and impurities, adhering to SEMI, ISO, and electronic-grade industry standards. The following two electronic-grade potassium organic acid products serve as core auxiliary materials for large-scale solar panel production, compatible with monocrystalline silicon, polycrystalline silicon, and perovskite-type solar panels. Details are as follows:

1. Electronic-grade potassium acetate (main content ≥99.5%, compliant with SEMI standards, metal ions ≤1ppb)

key role

As a core auxiliary material in solar panel production, it serves two critical functions: First, photovoltaic glass modification, where alkali metal ions are embedded to adjust the glass's dielectric constant, enhancing sunlight transmission and reducing reflection losses. Second, perovskite solar panel electronic transport layer modification, which passivates SnO₂ interface defects, suppresses non-radiative charge recombination, optimizes energy level matching, and improves photoelectric conversion efficiency. Additionally, it assists in regulating the pH of silicon wafer cleaning solutions to prevent surface oxidation damage.

product superiority

With ultra-high electronic-grade purity, this material is free from heavy metals and particulate impurities, fully meeting photovoltaic electronic-grade production standards. Its excellent water solubility prevents sedimentation, enabling compatibility with multiple processes including glass modification and interface modification. The superior buffering performance stabilizes the pH of cleaning solutions and modification systems, preventing process fluctuations. It significantly enhances the light transmittance of photovoltaic glass and the quality of perovskite films, contributing to improved solar panel efficiency. Moreover, being environmentally friendly with no residual traces, it aligns with green production requirements.

usage method

Photovoltaic glass modification: Prepare a 50% solution and spray it onto the glass surface at a rate of 50 mL/m². Apply a 30V DC electric field for 3 minutes, followed by cleaning and drying.

Perovskite interface modification: Add 0.1%-0.3% of the precursor solution by mass, stir uniformly, and then use it for the preparation of the electron transport layer.

Silicon wafer cleaning: Add 0.5%-1.0% of the cleaning solution by weight, adjust the pH to 6.5-9.0, and adapt to the wet cleaning process.

frequently asked questions

It exhibits strong hygroscopicity and must be stored in a sealed container under clean conditions at 10-25°C with relative humidity of 30%-50%. Direct mixing with strong acidic reagents is prohibited to avoid affecting purity. Excessive addition may lead to abnormal glass dielectric constant, requiring strict dosage control.

2. Electronic-grade potassium formate (main content ≥99.0%, meeting electronic-grade standards, free from harmful impurities)

key role

This specialized raw material for perovskite solar panels functions as a core precursor reductant, effectively removing iodine impurities from perovskite films, inhibiting iodide oxidation, and reducing defects. Simultaneously, it regulates perovskite crystal growth by increasing grain size, passivating grain boundary defects, extending carrier lifetime, and mitigating photovoltaic hysteresis. These improvements enhance panel stability and photoelectric conversion efficiency, making it suitable for large-scale production of high-performance perovskite solar panels.

product superiority

With ultra-high purity at the electronic-grade level, this material contains negligible impurities and is free from metal ion contamination, ensuring stable performance of photovoltaic modules. Its exceptional reducing capacity effectively removes iodine impurities while significantly reducing defect density in perovskite films. The material exhibits excellent water solubility, allowing easy dispersion in precursor solutions and compatibility with various photovoltaic production reagents. With minimal dosage and remarkable efficacy, it substantially enhances solar panel conversion efficiency, making it ideal for manufacturing high-end photovoltaic products.

usage method

During the perovskite precursor preparation stage, add 0.05%-0.2% by mass of the solution, stir at room temperature for 15-20 minutes until complete dissolution to ensure uniform dispersion. Subsequently, complete the thin film preparation and annealing treatment according to conventional processes, suitable for the production of planar n-i-p structure perovskite solar panels.

frequently asked questions

The material exhibits strong hygroscopicity and must be stored in a sealed container protected from light. Once opened, it should be used promptly to avoid moisture absorption and clumping, which may affect the accuracy of material feeding. It must not be stored with strong oxidizers to prevent chemical reactions. Excessive addition may compromise the crystallization quality of perovskite films, necessitating precise control of the ratio.

3.Industry Use Cases

A leading photovoltaic enterprise specializing in high-efficiency perovskite solar panels and photovoltaic glass faced challenges with conventional reagents, including excessive impurities, low photoelectric conversion efficiency, and insufficient glass transmittance. By implementing a dual solution of electronic-grade potassium acetate (for glass modification and interface modification) and electronic-grade potassium formate (for perovskite defect optimization), the company achieved a 1% increase in photovoltaic glass transmittance, a 60% reduction in perovskite defect density, and a 23.8% improvement in solar panel conversion efficiency from 22.1% to 23.8%. The product pass rate rose from 93% to 99.2%, enabling successful international photovoltaic product certification. Export orders surged by 55%, solidifying this approach as the core supporting solution for high-efficiency solar panel production.