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Solar Cells
"A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Solar cells are the building blocks of photovoltaic modules, also known as solar panels. The efficiency is the most commonly used parameter to compare the performance of one solar cell to another. Efficiency is defined as the ratio of energy output from the solar cell to input energy from the sun. "
EVA
EVA film is mainly used for PV module encapsulation. It acts as a protective film over solar cells. Solar cells are sensitive to moisture, oxygen and weather. If not protected, they will degrade with time and loose their ability to produce energy. Solar EVA film will protect your solar panels for a long time with little loss in performance.
Solar EVA Film Characteristics:
- High volume resistivity and lasting adhesion strength holding capacity, and insure PV modules have long service life.
- Low yellowness index change and low light transmittance attenuation, insure the high service efficiency of PV modules.
- EVA film for encapsulating solar modules can effectively protect the PV cell, and has excellence performance of transmittance and aging-resistant.
- It provides structural support, electrical isolation, physical isolation/protection, and thermal conduction for solar circuits, as well as to maximize the service life of solar module.
Backsheet
The solar cell back sheet is the outermost layer of the PV module. The PV back sheet is designed to protect the inner components of the module, specifically the photovoltaic cells and electrical components from external stresses as well as act as an electric insulator. In order to accomplish this, the solar back sheet must be a robust construction, typically a three layer laminate, and have high dielectric properties.
Importance of Backsheet:
Photovoltaic backsheets play an important role in protecting solar modules over their lifetime. Some of their key functions include:
- Physical protection
- Moisture protection
- Durablilty
- Electrical insulation
- Color that helps modules blend into their surroundings
- Efficiency to help modules generate more power
Solar Panels
A Photovoltaic (in short PV) module is a packaged, connected assembly of typically 6×10 solar cells. Solar Photovoltaic panels constitute the solar array of a photovoltaic system that generates and supplies solar electricity in commercial and residential applications. Each module is rated by its DC output power under standard test conditions, and typically ranges from 100 to 365 watts.
Importance of Solar Panels:
- Solar Power Reduces Air Pollution from Coal Power Plants
- Conservation of Resources
- Preservation of Habitats Affected by Mining
- Reducing the Financial Costs of Electricity
- Generating Energy Independence
