Okay, polysilicon. 1. Monocrystalline Silicon Polycrystalline silicon is a raw material used to make solar panels. 2. Silicon is an extremely abundant element on earth. It is present almost everywhere and can be considered inexhaustible. There is no shortage of raw materials for manufacturing silicon-based solar cells. 3. The speed of polycrystalline silicon solar panels is generally two to three times that of monocrystalline silicon, and the voltage should be stable. 4. The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, and the photoelectric conversion efficiency is about 12%, which is slightly lower than that of monocrystalline silicon solar cells. . However, the manufacturing of the material is simple and convenient, consumes less energy, and the total production cost is low,it has therefore been considerably developed.
Single crystal has a high conversion efficiency and is expensive; polycrystalline has low conversion efficiency and is cheap.
There are many polycrystals in the domestic market, or they are all polycrystals.
The Japanese market is very popular recently, but Japan's requirements are very high and they are all monocrystalline. People's idea of Japan is to do your best and do it right the first time. It has very high requirements for mitigation effectiveness, and we need to learn from that at home.
Crab Kingdom 9V2W Solar Panel Polycrystalline Silicon New Energy Standard 6V Rechargeable Battery 9V2W Solar Panel
This solar panel has sufficient power, the aluminum alloy frame is strong and durable, and the outlet line is easy to install.
Suitable for preliminary researche on solar energy for experimental purposes. It is also suitable for customers to use in various products, such as: solar lawn lights, solar landscape lights, solar cell phone chargers, solar flashlights and miscellaneous. solar toys. (The main products in stock are monocrystalline and polycrystalline, and we classify them all into good categories. The data tested under standard conditions is 100% at full power) Solar energy testing standards: Light intensity: 40,000 LUX, the temperature is 25 degrees. If the customer does not have the conditions for testing, you can purchase a 500W metal halide lamp and a voltage regulator. The distance is approximately 15 to 20 cm. Use a photometer to measure the data: 40,000 LUX. currently recognized international standard test method)
Solar panels are generally not used didirectly for equipment, but are generally used to charge batteries. The following conventional battery and solar charging options are available for customer reference:
Battery solar cell board voltage
1.2V 2-2 .5V
2.4V 3.5-4V
3.6V 5-6V
6V 7.5-9V
12V 15-18V
As shown above: real product photo
Solar chip origin: Taiwan
Material: polycrystalline
Packing method: tempered glass + aluminum alloy frame
Product life: 20 years
Size appearance: 180 x 130MM
Product thickness: 18MM
Product weight: 0.38KG
Open circuit voltage: 10.5V< /p>
Operating voltage: 8.75 V
Short circuit current: 0.25 A< /p>
Operating current: 0.23 A
Power: 2W (100% full power guaranteed)
Unit price: 50 yuan/piece (2W for one pwhole room, with a Take the junction box and connect the positive and negative poles and you can use it directly)