Radiation-Hard High-Efficiency InP Space Solar Cell Development. Phase 1.
Final rept. 15 May 89-31 May 91.
SPIRE CORP BEDFORD MA
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The efficiency of InP cells was improved to 19.1 AM0, using a cell fabrication process amenable to scale-up to production levels, and increasing the cell area to 4 cm2. An npp shallow-homojunction structure, fabricated by metalorganic chemical vapor deposition was used for this work. The emitter thickness was in the neighborhood of 30 nm, and a graded doping profile front-surface-field was used. Two hundred cells and two complete 20-cell panels were fabricated for space flight tests. Thermal cycling and radiation tests were carried out on these cells.
- Electric Power Production and Distribution