UniSolar 5 Watt Thin Film Solar Panel
United Solar’s proprietary Triple Junction spectrum-splitting amorphous silicon cell design achieves high performance.These cells are constructed of three separate p-i-n type, amorphous semiconductor solar sub-cells, each with a different spectral response characteristic. This allows the cell to convert the different visible and near infrared wavelengths of sunlight with optimal efficiency.
The thin-film cells are made in a patented continuous roll-to-roll deposition process on a flexible stainless steel sheet. Each of the nine thin-film semiconductor layers that comprise the cell is sequentially deposited in separate, dynamically-isolated, plasma enhanced chemical vapor deposition
(PECVD) chambers as the stainless steel substrate progresses through the machine.
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