application

P type PERC double-sided battery; N type PERT double-sided battery; IBC battery; Single glass component in high moisture environment; Unsealed double glass assembly

Property

Property
Product Code Technical Parameters	P9300E	P9300P	P9300EP
Color	White	White	White
Backing	EVA	POE	EVA+POE+EVA
Gram Weight[g/㎡]	390～560	390～560	390～560
Density[g/cm³]	0.96	0.87	–
Tensile Strength[Mpa]	≥16	≥10	≥8
Elongation[%]	≥550	≥500	≥400
Peeling Strength (Glass)[N/cm]	≥70	≥70	≥70
Peel Strength (Backboard)[N/cm]	≥40	≥50	≥40
Shrinkage（MD）[%]	≤4	≤3	≤4
Shrinkage（TD）[%]	≤2	≤2	≤2
Degree Of Crosslinking[%]	≥75	≥70	≥70
Volume Resistivity[Ωcm]	≥1.0×1015	≥1.0×1015	≥1.0×1015
Transmittance (After Curing)（280～380nm）[%]	≥80	≥80	≥80
Transmittance (After Curing)（400～1100nm）[%]	≥91	≥91	≥90
Uv Aging Yellowing Index[ΔYI]	＜5.0	＜3.0	＜5.0
Dampness-Heat Aging Yellowing Index[ΔYI]	＜5.0	＜3.0	＜5.0

description

Basic Concepts

Thin-film photovoltaics is a technology that converts solar energy into electrical energy, using solar cells made of thin-film materials to achieve photoelectric conversion. These thin-film materials are usually only a few microns or even nanometers thick and are deposited on various substrates such as glass, plastic or metal.

Working Principle

Light absorption and electron excitation: When sunlight shines on thin-film photovoltaic materials, photons with sufficient energy are absorbed by the material, causing electrons in the material to "jump" from the valence band to the conduction band, thereby generating conductive free electrons in the conduction band and leaving holes in the valence band.

Electric field formation: Thin-film photovoltaic cells are composed of n-type and p-type semiconductor materials, and a built-in electric field is formed at their junction.

Current generation: Under the action of the electric field, electrons in the conduction band move to one end of the battery, and holes in the valence band move to the other end, thereby forming a current. When the battery is connected to an external circuit, electrons can flow in the circuit to provide power for various devices.

Main types

Amorphous silicon thin-film solar cells: With amorphous silicon as the main material, they have the advantages of low cost, simple manufacturing process, and can be prepared on different substrates, but there is a photodegradation effect, that is, the efficiency will decrease after long-term illumination.

Cadmium telluride (CdTe) thin-film solar cells: With high photoelectric conversion efficiency, good stability, and relatively low cost, they have been widely used in large-scale ground power stations and other fields, but tellurium is a rare element, which may limit their large-scale development.

Copper indium gallium selenide (CIGS) thin-film solar cells: With high photoelectric conversion efficiency, stable performance, good weak light performance, they can be made into flexible batteries, which are suitable for a variety of application scenarios such as building integration, but the preparation process is relatively complex and the cost is relatively high.

Organic thin-film solar cells: Based on organic materials, they have the advantages of rich material sources, low cost, solution processing, and good flexibility, but currently have problems such as low efficiency and poor stability.

Application fields

Building integrated photovoltaics (BIPV): Thin-film solar cells can be integrated into the roof, wall, window and other parts of the building, which not only realizes solar power generation, but also does not affect the beauty and function of the building, and can also reduce the energy consumption of the building.

Distributed photovoltaic power generation: Applicable to the construction of distributed photovoltaic power generation systems in urban and rural residential, commercial buildings, industrial plants and other places to meet their own electricity needs and integrate excess electricity into the power grid.

Agricultural photovoltaic and fishery photovoltaic: Installing thin-film solar panels above agricultural greenhouses, fish ponds, etc. can not only generate electricity, but also provide shading and heat insulation for crops or aquaculture, realizing agricultural and photovoltaic complementarity and fishery and photovoltaic complementarity.

Portable and mobile power supply: Due to its light weight and good flexibility, it can be used to manufacture portable solar chargers, solar backpacks, solar tents, etc., providing convenient power for outdoor activities and field operations.

Space application: On satellites, spacecraft and other space vehicles, thin-film solar cells can be used as an important energy supply system due to their light weight and foldability.

Advantages

Advantages: Relatively low cost, less materials used in the manufacturing process, and low-cost manufacturing processes such as roll-to-roll and printing can be used; light weight, suitable for application scenarios with high weight requirements; good flexibility and bendability, can adapt to different installation surfaces and shape requirements; good low-light performance, can generate a certain amount of electricity under low light conditions such as cloudy days, early morning or evening