Are multi-junction solar cells the future?

Solar panel efficiency is constantly improving, and innovations in solar cell construction, materials, and design are at the forefront of these improvements. Multi-junction solar cells are an exciting technology that may provide increased efficiencies in the solar panels of the future. What are multi-junction solar cells?

Why should you install solar panels in Estonia?

The energy productivity of solar panels installed in Estonia is equivalent to the southern countries, as Estonia’s cooler climate increases the efficiency of solar panels. We offer our customers turnkey construction of a solar park, starting from the design to the connection point, the construction of substations.

What is the difference between a single-junction and a multijunction solar cell?

Single-junction solar cells have one p-n junction to direct the flow of electricity created when sunlight hits a semiconducting material. In a multi-junction solar cell, there are multiple p-n junctions that can induce a flow of electricity. Multi-junction solar cells are not made using silicon as a semiconductor.

How much solar radiation does Estonia produce a year?

In Estonia, the amount of solar radiation is comparable to Central Europe; the average amount of radiation has an optimal slope and azimuth of 1100-1200 kWh/m2, 85% of which falls between April and October. An optimally installed 1 kW PV plant produces 900 to 1000 kWh of energy per year.

What materials are used in a multi-junction solar cell?

Instead, materials like gallium indium phosphide (GaInP), indium gallium arsenide (InGaAs), and germanium (Ge) are used to create separate layers of semiconductors that all respond to different wavelengths of incoming sunlight. Layers in a multi-junction solar cell. Source:

Can AlGaAs tunnel junction be used for multijunction solar cells?

"AlGaAs Tunnel Junction for high efficiency multi-junction solar cells: simulation and measurement of temperature-dependent operation" (PDF). Archived from the original (PDF) on 2009-11-17. ^ a b Strandberg, Rune (2020). "An Analytic Approach to the Modeling of Multijunction Solar Cells".