Environmental Monitoring Comapct Raman Lidar System Utilizing APD Array Detectors

Not Available We propose to develop a novel, low-cost, amorphous silicon (a-Si:H) based modular to be integrated with a spacecraft thermal blanket for an auxiliary spacecraft power system. This new design is unique from ECD's present multi-junction module design in that an ultralight kapton substrate material and a monolithic cell interconnect design will be used which will allow for potential energy densities as high as 1000 W/kg. Small area (0.25 cm2) cells with this ultralight design have been fabricated with beginning-of-life AM0 efficiencies greater than 12%. Extensive tests have also demonstrated that the cell quality is resilient to electron and proton bombardment. In Phase I, we plan to scale-up the deposition process for 0.5 ft. x 0.5 ft. area cell fabrication. Deposition conditions will be optimized to achieve high cell performance and uniformity over large areas. Achievement of a highly reproducible process that produces 0.5 ft. x 0.5 ft. modules on kapton substrates with efficiencies greater than 8% will be achieved during the Phase I program. The process and module efficiencies will further be refined in Phase II of the program with the eventual goal of the implementation of the new module design and fabrication process into ECD's role-to role manufacturing line.