Fill factor (curve factor): The ratio of the maximum output power to the product of the open circuit voltage and the short circuit current, represented by the symbol FF.
FF=Pm/Uoc*Isc=Um*Im/Uoc*Isc
Fill factor is another important parameter that reflects the performance of solar cells.
ffThe fill factor is less than 0.75
The fill factor of general solar cells is about 75-77.
Solar cells, also known as "solar chips" or "photovoltaic cells", are optoelectronic semiconductor sheets that use sunlight to directly generate electricity. As long as it is illuminated by light, it can instantly produce voltage and generate current if there is a loop. In physics, it is called solar photovoltaic (Photovoltaic, photo light, voltaic volt, abbreviated PV), or photovoltaicin short.
Fill factor:
1. (Computer, database, SQL, Internet, technology applications) Characteristic of an index that defines the amount of free space on each page of the index. FILLFACTOR accommodates future expansion of table data and reduces the possibility of page splits. FILLFACTOR is a value between 1 and 100 that specifies the percentage of index pages that remain empty.
2. (Application in solar cells) The ratio of the current-voltage product (IoptVopt) to the point of maximum output power which can be obtained in the operating curve at IscVoc (the product of the closed circuit current and open circuit voltage), which reflects the battery. Power output changes with load.
3. Fill factor in the image sensor. Also translated as Fill Factor, it refers to the ratio between the area of the photosensitive part of the pixel and the total area of the pixel. The higher the FF value, the better the pixel performance. For example, 10% of each pixel area in a 90% fill factor CCD is insensitive to light.
Is the fill factor of solar panels strongly affected by temperature?
A fill factor below 0.75 indicates poor solar cell performance. Represents the ratio of the maximum output power imvm to the limiting output power iscvoc, usually expressed as ff. The fill factor is one of the important parameters that characterize the quality of solar cells. The larger the fill factor, the better the performance of the solar cell, and the ff of high-quality solar cells can reach 0.8 or more.
It is also affected by temperature. Generally speaking, when the temperature increases, although the operating current of the solar cellincreases, the operating voltage decreases, and the latter decreases further, hence the overall output power. will decrease; therefore, solar cells should operate at a lower temperature as much as possible.