- 1 What is Photovoltaic Cell?
- 2 What is Solar Energy?
- 3 How do solar panels manufacture?
- 4 How does a Solar Panel System Work?
- 5 Do Solar Panels Work During a Power Outage?
- 6 How do Solar Panels Work When There is no Sun?
- 7 Do Solar Panels Need Direct Sunlight to Charge?
- 8 Do Solar Panels Work When Covered in Snow?
- 9 Conclusion
What is Photovoltaic Cell?
Solar PV cell means solar photo voltaic cell. A photovoltaic cell or solar cell is an electronic device solar cell is made up of different types of components like Silicon, germanium, Arsenide, Copper indium, Cadmium telluride, etc. Basically, most photovoltaic cells are made of Silicon due to their higher efficiency than some other components. However, silicon material is a semiconductor device whenever sunlight falls on the photovoltaic cell converts then sunlight converts into DC power by a special process. Basically, solar PV cell working for power production to meet the daily load demand. Basically, the solar PV cell started its journey in 1954 from Bell Laboratories. Nowadays it has taken a leading part around the world generate electricity.
What is Solar Energy?
Solar energy is cosmic energy or it is radiant energy that emits from the sun. Solar energy is a clean and cheapest and renewable energy that is indispensable for human life. Sun is only the source of solar energy. Whenever sunlight falls on the solar panel then the solar panel particle is exposed to generate electricity. Nowadays solar energy is used to generate electricity because it is a renewable energy source and there is no chance to end this energy source.
Basically, a natural energy source in the world is decreasing arithmetically. For this reason, renewable energy sources can be the key to generating a large amount of energy. People are generating electricity by using solar energy to meet the daily load demand. However, we have discussed here solar PV cell working for power production. So take a look at how solar energy can be used to produce electricity by a special plant.
How do solar panels manufacture?
How solar panels are made? The solar panel is used to convert sunlight into electrical energy to meet the daily load demand. However, there is a story to made solar panels that we are going to share with you. The solar panel is also called a solar module. However, the solar PV module manufacturing process is not so easy. Those are top solar panel manufacturers they also tirelessly work to manufacture efficient solar panels.
Basically, the solar PV cells made up of silicon and it is the main element of the solar plate manufacturing process. First of all, silicon sands are collected from nature (there is plenty of silicon in nature) and this silicon sand uses to create solar panels. In this case, silica sands are cooked at 20000 C in a furnace along with the source of carbon. These melted silicon sands are cooled and create metallurgical grade silicon. It is not the end here, the impurity is removed from this metallurgical grade silicon and blended with phosphorous and Boron.
After this event, it was sliced into tiny wafers less than 0.2mm thick. Now it is ready to coat with silicon nitride. After the silicon coating, the silver is pasted on the front and rare surface. In this case, your solar panel is ready. This is a solar manufacturing or solar module manufacturing process. Now, this solar panel is tested manually to become that it is working properly. In this case, artificial heat is provided on the panel and checked that is it efficient or not. If the manual test becomes successful then these solar panel is ready to install to get electricity.
How does a Solar Panel System Work?
How PV cells work? The working process of the solar panel is a bit difficult. Basically, we see the plane shape of the solar panel but some difficult work happens within it. However, let’s get some crucial knowledge about solar PV cell working for power production. The main theme of the solar panel working is to generate electricity using sunlight. If we would like to generate electricity by using solar panels then we need silicon.
If we mixed silicon dioxide and carbon and heat it up to 20000 C then we get silicon. The atomic number of silicon is 14, atomic weight 28.086, and it is the most efficient device to generate electricity from sunlight. Basically, silicon is a semiconductor device. In some come conditions electricity can flow through it and sometimes electricity cannot flow through it. There are four electrons in the outer shell but we cannot use this silicon directly in the solar cell.
In this case, doping is most necessary for silicon. Doping means we need to increase some energy by providing extra energy. There are two types of doping in silicon: the first one is aluminum and phosphorous. The special feature of aluminum is there are three electrons in its outer shell but silicon has four electrons. If we doped with silicon and aluminum then we need one electron. Though there is a lack of one electron, that’s why this doping is called Positive doping (P-Type).
This object finds one electron to full fill eight electrons if a P-type object has eight electrons then it becomes stable. On the other hand, phosphorous has five electrons if we doped silicon with phosphorous then silicon has four electrons and phosphorous have five electrons. In this case, one electron becomes extra. Though electron carries a negative charge that’s why it is called negative doping (N-Type). Though this negative doping (N-Type) has an extra electron that’s why it wants to give it someone.
We have seen that positive doping wants to get an electron and negative doping wants to release an electron. This N-Type doping is called negative silicon and P-Type doping is called positive silicon. For this reason, silicon is divided into two for creating solar cells one is N-Type and another one is P-Type. If we bring N-type and P-Type doping come closer then the electron will flow from negative to positive. We know that whenever an electron flows from negative to positive then we get electricity.
It does not end here, there is a layer between N-Type and P-Type which is called the depletion layer. Due to this depletion layer, they cannot exchange electrons between them. For this reason, a separate root is given to get electricity from the outer side. Whenever an electron flows from negative to positive then we can use a battery to charge up. It is noted that electrons cannot easily flow from N-type to P-Type.
In this case, sunlight is applied to heat up the N-Type particles and electrons easily flow to the P-type. Basically, N-type is on top and P-Type on the bottom. Basically, our biggest discussion is the main working procedure for the solar panel. It is noted that we get DC power from the solar panel but we need AC power. In this case, we have to convert DC power into AC power by helping an inverter.
Do Solar Panels Work During a Power Outage?
In a Grid tied system, you will not get electricity due to the better safety factor. If the power goes out then your appliances may have to make repairs on their distribution network. There may be a failed transformer that requires repair. To restore power to several thousand customers may face risk if any fault occurs. That’s why the traditional grid-tied solar systems must turn off whenever the power goes out. On the other hand, if you have a direct connection or if you don’t use batteries then you will not get power whenever the sunlight shuts off (night period). On the other hand, if you use a battery then you can use this DC storage power whenever sunlight is not available (night period).
How do Solar Panels Work When There is no Sun?
Can solar panels work at night? The direct answer is no. The solar panel does not work at night. If there is no sun then the solar panel become fails to generate electricity. In-depth, we have seen above if N-type doping would like to share electron with P-type then we must need to generate heat that we get from sunlight on a sunny day. In the off sun period (night, or when there is no sun) no electron become exchanged between P-type and N-type doping. Basically, we get solar energy from sunlight.
That’s why solar cells cannot work during the off-sun period. How does solar power work at night? Basically, solar power work through two main processes: direct process and indirect process. The solar cell works directly on sunny days and generates a lot of electricity but some of these do not use and most of them are stored in batteries which are called indirect energy. However, the battery is stored DC power this DC power is converted into AC power by using an inverter to run electronics appliances at the night.
Do Solar Panels Need Direct Sunlight to Charge?
Yes, solar panels work in direct sunlight to charge but they can also work without it. Indeed solar PV cell is able to generate electricity and they can work on direct and indirect sunlight. Basically, direct and indirect sunlight carries photon that is responsible to generate electricity. If something happens that there is no sunlight (cloudy sky) after also that PV cells will generate electricity using indirect sunlight.
Do Solar Panels Work When Covered in Snow?
Solar panels work well on sunny days. If a solar cell is covered by snow and if there is no chance to fall sunlight on the solar panel due to snow, in that case, the solar panel will not work. There is one thing if snow falls on your solar panel then take the snow off from the solar panel and let your panel get a minimum heat to generate electricity and let your battery charge up. This undesired situation happens in the winter season. It is noted that if the snow becomes heavy on your PV cell the panel will never destroy and you don’t need to use water to clean it or if you want you can use water to clean it.
We get solar energy from the sun and solar energy is a renewable energy source that is used to generate electricity. Solar energy will never end until destroy the world. Basically, solar energy is undoubtedly trustable and long-term basis renewable energy source. However, we have shown the solar PV cell working for power production and we have shown the best photovoltaic cells in another article. So let’s start to use solar panels and safe our environment from the greenhouse effect. If you would like to know more about solar panels and some other energy sources then you may stay with openread.