The price difference between electronic grade silicon wafers and solar silicon wafers is as follows:
Electronic grade silicon wafers: nowadays , the price of silicon wafers is cheaper and one produced domestically costs 50 yuan. Left and right, 8 inches, 12 inches are relatively more expensive;
Solar silicon wafers: Solar silicon wafers, especially high-efficiency products, are currently rare. for each coin, it reached 0.98 or 0.99 US dollars, and some Taiwanese manufacturers even exceeded 1 US dollar.
160,000 transistors can be integrated on a silicon wafer the size of a grain of rice, which is a new step in the progress of science and technology.
The silicon content of the earth's crust reaches 25.8%, which constitutes an inexhaustible source for pproduction of monocrystalline silicon. Since silicon is one of the most abundant elements in the earth's crust, for products like solar cells to enter the mass market, the reserve advantage is also one of the reasons why silicon has become the main material of photovoltaics.
The difference between monocrystalline solar panels and polycrystalline solar panels
A piece of silicon wafer, 156*156, has an efficiency of 17.4% and the power of a single wafer is about 4.2 watts, or 1000 W/under m2 of light, the power generation power is 4.2 W, and the power generation can be calculated according to the irradiation time.
In the STC test environment, the solar cells were irradiated with a light intensity of 1,000 watts per square meter. The battery is 0.125m*0.125m and the efficiency is 17%-17.2%? Then the power of cheach room is 1000 x 0.125 x 0.125 x 17% = 2.64 W;
Detailed information:
Calculated based on a 156*156 8 inch polysilicon wafer: when The efficiency reaches 16%, the wafer thickness is 180, and the polysilicon consumption per watt in the corresponding figure is 7g. When the thickness and weight of the silicon wafer remain unchanged:
156*156, when the efficiency of the 8-inch polycrystalline silicon wafer reaches 16%, the power of the single chip is of 3.89 W.
We can deduce: the thickness of the silicon wafer is 180, the efficiency reaches 16% and the polysilicon consumption per part is 3.89w*7g /w=27.23g.
When the thickness of the silicon wafer is 180 and the weight of the silicon wafer remains unchanged, when the rate ofPolycrystalline silicon wafer conversion reaches 18%, single chip power is 156*156*0.18/1000. =4.38W.
It can be deduced: when the thickness of the silicon wafer is 180 and the weight of the silicon wafer remains unchanged, when the conversion rate of the polycrystalline silicon wafer reaches 18% , the polycrystalline silicon wafer consumes the weight of polycrystalline silicon per watt.is 27.23/4.38=6.2 g
Calculation:
For one silicon wafer single crystal 156 with constant thickness of 180 and constant weight, when the conversion efficiency reaches 20%, the single -The power of the chip is: 156*156*0.2/1000=4.86W, the consumption of polycrystalline silicon per watt of monocrystalline silicon wafer is: 27.23 g/4.86 W=5.6 g/w.
Baidu Encyclopedia - Silicon Wafer
What is a silicon wafer
Well, polysilicon. 1. Mono siliconCrystalline 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, so it has been greatly developed.
Single crystal has 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.
What is the main material of solar panels?
Silicon wafers are an important material for manufacturing integrated circuits. Through photolithography, ion implantation and other methods, silicon wafers can be used. Processed into various semiconductor devices.
The chips made up ofSilicon wafers have incredible computing power. The development of science and technology continues to promote the development of semiconductors. The development of technologies such as automation and computing has reduced the cost of high-tech products such as silicon wafers (integrated circuits) to a very low level. This has allowed silicon wafers to be widely used in aerospace, industry, agriculture and defense, and even to quietly enter every home.
The silicon content of the earth's crust reaches 25.8%, which provides an inexhaustible source for the production of monocrystalline silicon. Since silicon is one of the most abundant elements in the earth's crust, for products like solar cells to enter the mass market, the reserve advantage is also one of the reasons why silicon has become the main materialto photovoltaics.
Detailed information:
The silicon wafer chip is the famous “magic operator " ", has incredible computing power. No matter how complex the math problems, physics problems, or engineering problems are, and no matter how big the computational workload, as long as the staff tells them the problem through the computer keyboard and gives the ideas and instructions to solve the problem, the computer can solve the problem in a very short time. Get the answer in no time.
MicroelectronicsChips have entered the medical field, rejuvenating ancient medicine and continually creating innovations for human health care.
The “magic” of microelectronic chips is that they can restore sight to the blind, restore hearing to the deaf, make the mute speak and make people move.orthoses, and bring light and hope to tens of millions of disabled people. people from all over the world.
Baidu Encyclopedia - Silicon Wafer
The main material of solar panels is monocrystalline silicon or polycrystalline silicon wafers.
The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 18%, the highest reaching 24%. It is the highest photoelectric conversion efficiency among all types of solar cells, but the production cost is high. is very high, so much so that it cannot be used universally. Since monocrystalline silicon is encapsulated in tempered glass and waterproof resin, it is strong and durable and has a lifespan of up to 25 years.
The manufacturing process of polycrystalline silicon solar cells is similar to that of m-silicon solar cellsonocrystalline, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, and its photoelectric conversion efficiency is about 16%. In terms of production cost, it is cheaper than monocrystalline silicon solar cells. The material is easy to manufacture, saves energy, and the overall production cost is low, so it has been widely developed.
Application fields of solar panels:
1. User Solar Power Supply: Small power supply ranging from 10-100W, used in remote areas without electricity such as plateaus, islands, pastoral areas, border posts and other daily life electricity military and civil such as lighting, television, radio, etc., 3-5kW household roof grid connected power generation system, photovolt water pumpaic: Solve well for deep water drinking water and irrigation in areas without electricity.
2. Transportation field: such as navigation beacon lights, road/railroad signal lights, warning/signal lights, Yuxiang street lights, high-altitude obstacle lights, highway wireless telephone booths /railroads, route changes without supervision. food, etc.
3. Communication/communication field: unattended solar microwave relay station, optical cable maintenance station, broadcasting/communication/paging power system, rural operator telephone photovoltaic system, small communication machine, power supply Soldier GPS, etc.
4. In the fields of petroleum, oceans and meteorology, cathodic protection solar energy systems for oil pipelines and reservoir valves, power supplies ofe rescue and rescue for oil drilling platforms, ocean detection equipment, weather/hydrological observation. equipment, etc
5. Lighting power: such as garden lights, street lights, portable lights, camping lights, climbing lights, fishing lights, black light lights, rubber tapping lights, lamps energy saving, etc.