6 Junction Expansion to 3-5 Junction Programmable LED Solar Simulator

Angstrom Designs programmable LED solar simulator (pLEDss) technology already meets the testing needs of 3 junction through 5 junction advanced solar cells, including 5 junction inverted metamorphic technologies. While 6 junction capability has been demonstrated on pLEDss, it has not yet been delivered to the market, due to cost and manufacturing concerns. This proposal seeks to evaluate light sources for the 6th junction that address existing concerns, deliver a 6 junction pLEDss illumination module prototype to AFRL and supply the US Aerospace community will cost-effective, automated 6J test capability. This work will advance the capability of pLEDss to cover the complete roadmap of the current space solar cell suppliers, which will meet ground testing needs for years to come. The Phase II effort will deliver 6J test capability to AFRL, potentially through the upgrade of existing pLEDss instruments at AFRL.