WSL Solar – One of the Top Solar Panel Manufacturers in China

WSL Solar has been a quality and professional manufacturer of customized solar panels and solar solution provider in China since 2006. 

Using the latest solar technology, all solar panels are 100% inspected before shipment, strict quality control, honesty and trustworthiness, mutual benefit, these are what we have been doing.

custom solar panels
Custom Solar Panels
ETFE solar panel
ETFE Solar Panels
solar panel size
Custom Shape Solar Panels
solar mini panels
Solar Mini Panels

Welcome to contact us for quality custom solar panels.

https://www.wsl-solar.com

Email: info@wsl-solar.com

Evolution of Silicon Wafer Size

Silicon wafers are divided into semiconductor wafers and photovoltaic wafers according to their uses. Photovoltaic silicon wafers can be single crystal silicon or polycrystalline silicon, and semiconductor silicon wafers can only be single crystal silicon. The biggest difference between the two is that the content and purity of silicon are different. The conversion efficiency of monocrystalline silicon is generally about 18.5%~25%, and the conversion efficiency of polycrystalline silicon wafer is about 17.3%. Correspondingly, monocrystalline silicon solar cells have higher photoelectric conversion efficiency than polycrystalline silicon solar cells.

solar panels by size

 
Over the years, the silicon wafer size has experienced a process from small to large. The increase in silicon wafer size and the continuous progress of photovoltaic technology have promoted the cost reduction and efficiency improvement of the entire photovoltaic industry chain.

For silicon wafer manufacturers, the larger size of silicon wafers can reduce the three major costs of silicon wafer companies: silicon material, crystal pulling, and slicing. The same amount of silicon material can reduce the number of crystal pulling and energy consumption when the diameter of the silicon rod becomes larger, thereby reducing the cost of crystal pulling. At the same time, large-sized silicon wafers can reduce the number of slices, the cost of slices and the cost per watt of silicon wafers.

For solar cell and solar panel manufacturers, the larger size of silicon wafers can speed up the production speed of silicon wafers to solar modules, which will also reduce production and operation costs such as manpower, water and electricity, and dilute the production process of solar cell modules. Non-silicon cost. As the size of a single silicon wafer increases, the number of cells in a single solar module decreases, the number of silicon wafers decreases accordingly, and the effective light-emitting area of ​​the solar module increases, which will lead to an increase in conversion efficiency and power, and a decrease in the cost per watt. .

For power station customers, under the same power station scale, the larger the size of the solar modules, the less the number of solar modules required, thereby reducing the corresponding brackets, combiner boxes, cable costs, transportation and installation costs, etc. At the same time, large-sized silicon wafers will improve the power and quality of solar modules to a certain extent, and increase the power generation capacity of the power station while reducing the cost of the power station.

Under the driving force of diluting costs and improving the quality of solar modules, the silicon wafer size has grown from 100mm to 210mm in the past 40 years from 1981 to the present.

1981-2012: 100mm-156mm
Between 1981 and 2012, silicon wafers had margins of 100mm and 125mm, and were dominated by 125mm silicon wafers. After that, the margin of silicon wafer was greatly increased from 125mm to 156mm (ie M0), an increase of 54.1%. 156mm silicon wafer has gradually become a popular choice for p-type monocrystalline and polycrystalline silicon wafers. Around 2014, 125mm P-type silicon wafers were basically eliminated and only used in some IBC and HIT battery modules.

2012-2018: M0-M2
At the end of 2013, several major manufacturers took the lead in unifying M1 (margin 156.75mm, diameter 205mm) and M2 (margin 156.75mm, diameter 210mm) silicon wafers with a standard of 156.75mm, which is a major change in the history of silicon wafer size development. . In 2017, the size standard was reviewed and approved by the SEMI standards committee. The revised version of the national standard for polysilicon wafers in 2018 also determined 156.75mm as the standard side length, and suggested that future size increases should be changed in multiples of 1mm.

2018 to present: M2—M6
Under the situation of increasing demand for high-power components, some manufacturers began to achieve this goal by increasing the area of ​​​​the battery, resulting in the emergence of 157.0, 157.3, 157.5, 157.75, 158.0 and other silicon wafers in the market. The organization and management of the chain brings great inconvenience.
After the melee, two mainstream sizes appeared on the market: G1 square monocrystalline (158.75mm margin) and M6 (166mm margin) large silicon wafers.

The ultimate in wafer size: 210mm
In August 2019, Zhonghuan launched the G12 (210mm margin) large silicon wafer, which greatly increased the area of ​​the M6 ​​silicon wafer by 60.8%. According to the data, the cost of G12 cells is 25.56% lower than that of M2, and the cost of components is reduced by 16.8%.

The change in the size of silicon wafers over the past 40 years reflects the parity process of the entire industry. With the advent of the parity era, a new starting point for the photovoltaic industry has just begun.

WSL Solar has been a quality and professional manufacturer of custom shape solar panels and solar solution provider in China since 2006.
https://www.wsl-solar.com

Source of origin: https://www.wsl-solar.com/News/2022/0114/evolution-of-silicon-wafer-size.html

Crystalline Silicon Solar Cell vs IBC Solar Cell

This video mainly introduces the difference between Crystalline Silicon Solar Cell vs. IBC Solar Cell, and the difference between Mono Solar Cell vs. Poly Solar Cell. Hope it can help you better understand different types of solar cells.

Created by Carrie Wong | WSL Solar

WSL Solar has been a quality and professional manufacturer of customized solar panels and solar solution provider in China since 2006.

https://www.wsl-solar.com

WSL Solar – Your Reliable Partner for Custom Solar Panels

WSL Solar has been a quality and professional manufacturer of customized solar panels and solar solution provider in China since 2006. 


With our more than 15 years’ experience in solar industry, we are able to design and develop a tailor-made solar panel in a variaty of sizes, shapes and power outputs to meet our client’s specific requirement, and provide solution support to our customers starting from their initial product development stage. 


Welcome to contact us for quality and high efficiency custom solar panels

https://www.wsl-solar.com

5V Solar Panel

WSL Solar’s 5V solar panel is built with the latest most efficient crystalline silicon solar cells or super high efficiency Sunpower solar cells. These 5v solar panels are great for charging your 3.2V DC batteries and ideal for use in off grid applications such as GPS tracking, educational kits, small electronic devices, LED lighting etc.

5V Solar Panel


Features:
– With cutting-edge high efficiency solar cells
– Positive power tolerance
– Withstanding challenging environmental conditions
– Waterproof, scratch resistant & UV resistant
– Excellent performance under low light environments

Specification

Item No.DimensionPmaxVmpImpCell TypeEncapsulation
WSL-C001D=109×4.5mm1W5V200mAMono Solar CellTempered glass
WSL-C003100x50x4.5mm0.5W5V100mAMono Solar CellTempered glass
WSL-C004100x80x2.2mm1W5V200mAPoly Solar CellPET Film
WSL-C006176x86x4.5mm2.5W5V500mAMono Solar CellTempered glass
WSL-C01478x150x4.5mm1.6W5V320mAMono Solar CellTempered glass
WSL-S002D=43×1.8mm0.2W5V40mASunpower Solar CellPET Film
WSL-S00595x69x2mm1W5V200mASunpower Solar CellPET Film
WSL-S00780x80x2mm1W5.5V181mASunpower Solar CellETFE Film
WSL-S00965x65x2mm0.6W5V120mASunpower Solar CellETFE Film
WSL-S010120x70x2mm1.6W5.5V290mASunpower Solar CellETFE Film
WSL-S01230x50x2mm0.2W5.5V38mASunpower Solar CellPET Film
WSL-XC001120x120x4.5mm1.5W5V300mAMono Solar CellTempered glass
WSL-XC002220*190×4.5mm5W5V1AMono Solar CellTempered glass
WSL-XC003216*132*4.5mm3W5V600mAPoly Solar CellTempered glass
WSL-XC004240*160*4.5mm4W5V800mAMono Solar CellTempered glass
5V Solar Panel

Click here to watch the video of this type of custom solar panels. View More Custom Solar Panels 5V Solar Panels   |  6V Solar Panels   |  9V Solar Panels

WSL Solar has been a quality and professional manufacturer of custom solar panels and solar solution provider in China since 2006. 

Source of origin: https://www.wsl-solar.com/5V-solarpanels.html

9V Solar Panels

WSL Solar’s 9V solar panels (or 9 volt solar panels) are built with the latest most efficient crystalline silicon solar cells. These custom shaped solar panels are great for charging your 6V DC batteries and ideal for use in off grid applications such as marine buoys, traffic signs, IoT devices, GPS trackings, educational kits, small electronic devices, LED lighting etc. 

9V Solar Panel



Features: 
– With cutting-edge high efficiency solar cells 
– Positive power tolerance 
– Withstanding challenging environmental conditions 
– Waterproof, scratch resistant & UV resistant 
– Excellent performance under low light environments

                                                                                    Specification 

ItemSpecificationSizeSolar Cell TypeLamination
WSL-C0029V Solar Panel, 1.5W125x135x4.5mmPoly Solar CellTempered glass
WSL-C0129V Solar Panel, 11W350x300x18mmPoly Solar CellTempered glass
WSL-C0159V Solar Panel, 3.5W95x248x4.5mmMono Solar CellTempered glass
WSL-C0229V Solar Panel, 2W130x140x17mmMono Solar CellTempered glass

Click here to watch the video of this type of custom solar panels. 

View More Custom Solar Panels 5V Solar Panels   |  6V Solar Panels   

WSL Solar has been a quality and professional manufacturer of custom shaped solar panels and solar solution provider in China since 2006. 

Source of origin: https://www.wsl-solar.com/9V-solar-panels.html

How to Choose a Small Solar Panel That is More Suitable for Your System?

Stand-alone solar panels are widely used in various industries such as remote telemetry, security, monitoring, fence charger, gate opener, intelligent traffic, senor, IoT and aviation obstruction lights, especially with the improvement of solar cell conversion efficiency and the decrease in the cost per W of the solar panel will inevitably further expand the application range of custom shaped solar panels. How should we choose the solar panel suitable for our system?

small solar panels

Small Solar Panels

1. If the product needs to be placed in harsh environments on the sea, desert, wetland, etc. for a long time, we recommend using glass solar panels. Because glass has the advantages of high light transmittance, hard texture and stable physical and chemical properties, it can well protect solar cells from being oxidized and crushed. However, the disadvantage of glass solar panels is that the unit weight is heavier than other types of solar panels of the same power and the glass is fragile. It is not suitable for products that need to be carried and transported for a long time, but is suitable for stationary systems. At the same time, we recommend that the solar panels be sealed with glue or silica gel, so that the life of the solar panels can be greatly extended.

2. If solar panels are used in consumer electronics, such as outdoor camping, solar chargers, GPS trackers, etc., we recommend using non-glass laminated solar panels, such as rigid solar panel, semi-flexible solar and fully flexible solar panels and foldable solar panels. Currently popular packaging materials are PET film and ETFE film. PET film is made of plastic. If this material is placed outdoors for a long time, its surface will become brittle and atomized. If a layer of coating is added to the PET surface, this coating will fall off after about 0.5 years, making the surface of the solar panel very unsightly and greatly reducing the power output of the solar panel. If the surface of the solar panel is ETFE film, its lifespan will be longer. We generally think that its lifespan may last 3-5 years. However, such non-glass-encapsulated solar panels must avoid impact on the surface and squeeze around them to avoid damage to the solar cells inside and affect the power output of the solar panels.

Sort by low-light performance of solar panels:
Thin-film Solar Panel> Mono PERC solar panels> Traditional Monocrystalline Solar Panels> Polycrystalline Solar Panel.
So solar panels are used in indoor environments, we recommend thin film solar panels. If it is used outdoors, but the light is not very good, you can consider PERC Mono solar panels and traditional mono solar panels. If it is used in a well-lit outdoor environment, you can choose PERC mono, traditional mono and poly solar panels.

Sort by solar panel conversion efficiency:
Mono PERC solar panels> Traditional Monocrystalline Solar Panels> Polycrystalline Solar Panel> Thin-film Solar Panel.
At present, the highest conversion efficiency and large-scale commercial use are Mono PERC solar panels, and the lowest efficiency is thin-film solar panels.
If it is used for indoor wireless sensors, calculators, etc., you can choose thin-film solar panels. If it is used for outdoor GPS TRACKER, IOT, traffic lighting, etc., you can use PERC or traditional monocrystalline solar panels. If it is used for signal tower, small off-grid power station, you can choose Mono PERC solar panels or polycrystalline solar panels.

With the further improvement of technology, when thin film solar panels, traditional monocrystalline solar panels and polycrystalline solar panels encounter bottlenecks, Mono PERC solar panels will become the choice of most people. As a manufacturer of small solar panels, WSL Solar will provide customers with very constructive suggestions during the product development phase to avoid saving development time and money.

Posted by Carrie Wong | WSL Solar Co., Ltd.
WSL Solar has been a quality and professional manufacturer of custom shaped solar panels and solar solution provider in China since 2006.
https://www.wsl-solar.com

Source of origin: https://www.wsl-solar.com/Product_News/2022/0105/how-to-choose-a-small-solar-panel.html

What is an Organic Solar Cell?

Detailed explanation of the characteristics and structural principles of organic solar cells

Organic solar cells are solar cells that consist of organic materials at the core. It is mainly based on organic materials with photosensitive properties as semiconductor materials, and the photovoltaic effect generates voltage to form a current to achieve the effect of solar power generation.

Custom Solar Panels

First, the characteristics of organic solar cells

As a new type of solar cell device, organic solar cells have the characteristics of flexibility, light weight, adjustable color, solution processing, and large-area printing preparation. They are currently a hot spot in the field of solar cell research. But low efficiency is the main reason that limits its large-scale application.

Second, the structural principle of organic solar cells

1. The principle of organic solar cells

Organic solar cells use photosensitive organics as semiconductor materials, and generate voltages to form currents by the photovoltaic effect. The main photosensitive organic materials have conjugated structure and conductivity, such as phthalocyanine compounds, porphyrins, cyanines, etc.

2. Several structures of organic solar cells

Organic solar cells can be divided into single junction structure, P-N heterojunction structure, and dye-sensitized nanocrystalline structure according to semiconductor materials.

3. Single junction structure

The single-junction structure is an organic solar cell made based on the principle of Schottty barrier. Its structure is glass/metal electrode/dye/metal electrode, which uses the different work functions of the two electrodes to generate an electric field. Electrons are transferred from the metal electrode with low work function to the electrode with high work function to generate photocurrent. Since electrons and holes are all transferred in the same material, the photoelectric conversion rate is relatively low.

4. P-N heterojunction structure P-N

The heterojunction structure refers to a heterojunction structure with a donor-acceptor (N-type semiconductor and P-type semiconductor). Among them, semiconductor materials are mostly dyes, such as phthalocyanine compounds and perylene tetraformaldehyde imine compounds, using the D/A interface (Donor—donor, Acceptor—acceptor) and electron-hole separation between semiconductor layers. The transfer characteristics in different materials increase the separation efficiency. Elias Stathatos and others combined the advantages of inorganic and organic compounds to make solar cells with a photoelectric conversion rate of 5% to 6%.

5. NPC (nanocrystaline photovoltaic cell) dye-sensitized nanocrystals

Dye-sensitized solar cell (DSSC) mainly refers to a type of solar cell that uses dye-sensitized porous nanostructured TiO2 film as the photoanode. It is a solar cell that mimics the photosynthesis principle of plant chlorophyll. However, NPC solar cells can choose appropriate redox electrolytes to increase the photoelectric efficiency, which can generally be stabilized at 10%, and nanocrystalline TiO2 is easy to prepare, low in cost, and has a considerable life span, which has a good market prospect.

Posted by Carrie Wong | WSL Solar Co., Ltd.

WSL Solar has been a quality and professional manufacturer of custom solar panels and solar solution provider in China since 2006.

https://www.wsl-solar.com