The solar panels we use typically have one layer of semiconducting solar cells.
Tandem solar cells comprise more than one layer, and are effectively a stack of different solar cells on top of each other.
Tandem solar cells can either be individual cells or connected in series, and tandem solar cells typically have much higher efficiencies than the conventional single-junction solar cells that are used today in most solar modules.
The most common arrangement for tandem cells is to grow them monolithically so that all the cells are grown as layers on the substrate and tunnel junctions connect the individual cells.Thus it becomes optimised to each section of the solar spectrum and capture more energy from the sun.
Because it has multiple p-n junctions, a tandem solar cell is a type of multi-junction cell.
You Might Want to Check Out these Questions Too on Types of Solar Panels
- What is a Crystalline Silicon/c-Si Solar Cell/Module?
- How do Monocrystalline Solar Panels Compare with Polycrystalline Solar Panels?
- What is an Amorphous Silicon (a-Si) Solar Module? Is it Used Now?
- What are CdTe (Cadmium Telluride ) Thin Film Solar Cells? Are These Commercially Available?
- What are CIGS (Copper Indium Gallium Selenide) Thin Film Solar Cells? Are These Available Commercially Today?
- What is a CIS Solar Module? Are These Commercially Available Today?
- What are Bifacial Solar Cells? Are they Commercially Available?
- What are Concentrating Photovoltaics (CPV)? What are their Benefits?
- What Single-junction Solar Cells? How are they Different from Conventional Solar Cells?
- What is a Transparent Solar Cell? And What are Its Advantages Over Conventional Cells?
- What are Heterojunction Solar Cells? Are these Commercially Available?
- What is the Smallest Sized Solar Panel Available Currently?
- What is the Largest Capacity/Size Solar Panel Currently?
- What are n-type Solar Cells? And how are they Different from p-type Cells?
- What are Multi-junction Solar Cells? How are They Different from Conventional Solar Cells?