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Triple Junction Solar Cells from Spectrolab

Spectrolab manufactures solar panels and cells for spacecraft power systems and CPV. It supplies semiconductors in the form of solar panels and cells to space industry. Solar panels are composed of solar cells, which are connected in parallel and in series to meet the power and current voltage requirements of spacecrafts. All the panels are combined together to form a solar array.

The solar cell junctions are produced using diffusion methods by Spectrolab. Sizes of solar cells are defined with the diamond wheel and laser cutting techniques. With the use of finest materials, solar cells can be assembled into circuits for geostationary, low earth and deep space missions. The solar cells, from Spectrolab, are protected with a coverglass against micrometeorites impact. The coverglass also helps solar cells to fulfil the demands of radiation and thermal environments. There are different types of solar cells, namely NeXt Triple Junction (XTJ), Improved Triple Junction (ITJ), Ultra Triple Junction (UTJ), Triple Junction solar cells, Single Junction solar cells and Dual Junction solar cells.

The Triple Junction solar cells come with an n/p design, with increased minimum average efficiency of BOL and EOL. The solar cells are protected with an integral bypass diode. The bypass diodes have high production capacity and deliver minimum average efficiency. The Triple Junction solar cells are of Germanium (Ge) substrate and designed with two-terminal triple junction called Monolithic. They are available in a size of 30cm2 and can be assembled through welding, soldering, ultrasonic wire bonding or thermocompression.


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