As an important component of renewable energy, the photovoltaic conversion efficiency and anti reflection performance of solar panels have always been a research hotspot. Silver plated film, as an efficient optical material, plays an important role in improving the photoelectric conversion efficiency and anti reflection performance of solar panels. This article will provide a detailed introduction to the application of silver plated films in solar panels, with particular emphasis onAdvanced Institute (Shenzhen) Technology Co., Ltd、PI silver plated filmandPET silver plated reflective filmRelated technologies.
1、 Basic principles and advantages of silver plated film
Silver plated film deposits a thin layer of silver on the surface of the substrate, utilizing the high reflectivity of silver to achieve efficient reflection and transmission of light. In solar panels, silver plated films are mainly used in the following areas:
- Improve photoelectric conversion efficiency:
- Light capture and reflection: Silver plated film can reflect a large amount of light, increase the number of reflections of sunlight inside the solar panel, extend the optical path, and thus improve the production of photo generated carriers.
- Resonance absorption effect: Silver particles of different sizes produce resonance absorption peaks in the 400-500nm wavelength range (the most energy concentrated part of the solar spectrum). By adjusting the size and distribution of silver particles, the utilization efficiency of photovoltaic cells for sunlight can be further improved.
- Anti reflection performance:
- Anti reflection film: A layer of anti reflection film is evaporated on the surface of solar cells, which can reduce the reflectivity of incident light to about 2% and significantly improve the transmittance of light.
- Double sided silver plated filmBy adding transparent materials, the silver layer maintains high reflectivity while also having a certain transmittance. The transmittance of double-sided silver plated film reaches over 80%, which is suitable for fields such as solar panels.
2、 Silver plating film technology of Advanced Institute (Shenzhen) Technology Co., Ltd
Advanced Institute (Shenzhen) Technology Co., Ltd., as a leading new material research and development institution in China, has made significant progress in the field of silver plated films. The PI silver plated film and PET silver plated reflective film developed by the company have shown outstanding performance in improving the photoelectric conversion efficiency and anti reflection performance of solar panels.
- PI silver plated film：
- High reflectivity: PI silver plated film has high reflectivity characteristics, which can improve the signal transmission effect of sensors, fiber optic communication and other applications. It is also suitable for solar panels to improve the photoelectric conversion efficiency.
- High temperature resistance: PI silver plated film has good high temperature resistance and can maintain stable reflection performance in extreme environments, making it suitable for high-temperature environments such as aerospace.
- PET silver plated reflective film：
- High transparency and stability: PET silver plated reflective film has excellent transparency and chemical stability, will not be oxidized or degraded, and can maintain high efficiency performance for a long time.
- Low cost and high efficiency: PET silver plated reflective film adopts production methods such as continuous feeding or coil method, with high production efficiency and low cost, suitable for large-scale industrial production.
3、 The specific application of silver plated film in solar panels
- Anti reflection and anti reflection:
- On the front surface of the solar panel, chemical corrosion velvet technology and reactive plasma etching (RIE) technology are used to form an inverted pyramid shaped velvet surface, and a layer of anti reflection film is evaporated on the velvet surface to reduce the reflectivity to about 2%.
- Silver plated film, as a part of the anti reflection film, further improves the transmittance of light by optimizing the size and distribution of silver particles.
- Electrode optimization:
- The grid line part of the front electrode of the solar cell is coated with silver film to reduce the shielding area and increase the cross-sectional area of the grid line, forming a good contact and strong adhesion ohmic contact, thereby improving the current collection efficiency.
- Back reflection:
- On the back of the solar panel, PET silver plated reflective film is used to reflect unabsorbed light back into the battery, increase the optical path, and improve the production of photo generated carriers.
4、 Reference data and experimental results
- Reflectivity and Transmittance: The reflectivity of silver plated film in the 400-500nm wavelength range can reach over 90%, and the transmittance of double-sided silver plated film can reach over 80%.
- Enhancement of photoelectric conversion efficiency: Through the application of silver plating film, the photoelectric conversion efficiency of solar panels can be increased by 0.1% -0.5%, depending on the quality and process parameters of the silver plating film.
- Stability testing: After long-term stability testing in high temperature and high humidity environments, the silver plated film can maintain stable reflective performance without significant degradation.
5、 Conclusion
Silver plated film is of great significance in improving the photoelectric conversion efficiency and anti reflection performance of solar panels. Developed by Advanced Institute (Shenzhen) Technology Co., LtdPI silver plated film and PET silver plated reflective filmWith its advantages of high reflectivity, high temperature resistance, low cost, and high efficiency, it provides strong support for the development of solar panels. In the future, with the continuous advancement of technology and further cost reduction, the application prospects of silver plated films in solar panels will be even broader.
The above data is for reference only, and specific performance may vary due to production processes and product specifications.
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