For Professionals
Find installers now!
Get free local quotes
Cut your energy costs
Improve your home's value
  • Projektdaten
  • Angebote
Project Type
Please fill out this field
Tätigkeit
Please fill out this field
Area to be heated
Please fill out this field
Type of Solar Thermal
Please fill out this field
Your Utility Company
Please fill out this field
Avg. Monthly Electric Bill
Please fill out this field
Property Type
Please fill out this field
Type of Area
Please fill out this field
Choose the status of your project
Please fill out this field
What is the Timing of your project
Help contractors to schedule your inquiry
Please fill out this field
Fachbetriebe finden & kostenlos Angebote anfordern
Complete your request to receive free local quotes
Please fill out this field
Please fill out this field
Please fill out this field
Please fill out this field
Please fill out this field
Please fill out this field
    Please fill out this field
    3 min. left

    Solar Cell Efficiency And It's Influence On Solar Power

    Solar cell efficiency tells us how much of the solar insolation that reaches the cell is converted into electricity. The solar cells which are used in conventional photovoltaic panels are usually single junction cells with solar cell efficiency around 15%. Solar cells and being continuously improved by scientists which increases the solar cell efficiency constantly.

    Solar cell efficiency usually falls between 12.5-15 % and describes how much solar energy is actually converted into solar power in relation to the solar insolation that reaches the cell.

    In laboratories, scientists are working on solar cell efficiency constantly. While best results for traditional solar cells lie around 22%, multi-junction cells have reached a solar cell efficiency of 42%. Commercial tandem cells are already available at 30% in real sunlight and up to 40% under concentrated sunlight. Solar cells made of crystalline silicon are now approaching the theoretical limiting solar cell efficiency of 29%.

    Increasing solar cell efficiency has its effect on the price though. Highly efficient solar cells are often too expensive for commercial production and are mainly used for scientific purposes.

    Solar cell efficiency can be broken down into several parameters like reflectance efficiency, thermodynamic efficiency, charge carrier separation efficiency and conductive efficiency. These aspects add up to the overall solar cell efficiency.

    It is difficult to measure some of the solar cell efficiency parameters directly. So other parameters, that provide the necessary information, are measured instead. To calculate reflectance losses, the quantum efficiency is measured, for example. Other parameters that help determine solar cell efficiency are thermodynamic efficiency, quantum efficiency, VOC ratio, and fill factor.

    Written by: Oliver Wulf, Editor uk.SolarContact.com