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The manufacturing improvement of IMM solar cells and flex string arrays (FSAs) is a focus of the AFRL-funded IMM Mantech program. Significant manufacturability improvements have been achieved to date, with focus on reduction in materials cost and touch labor, process automation, and demonstration of large area IMM cells (≥ 60cm2) on 4” and 6” wafers. Confidence testing of FSAs encompassing multiple...
The Emcore One-per-wafer ZTJ solar cell, with a cell area of approximately 60cm2, is based on the 29.5% efficiency ZTJ triple-junction structure. The performance of this cell has been enhanced via grid design improvements, resulting in a 0.3% absolute efficiency increase. To confirm electrical performance and investigate reliability with respect to the grid metal and form factor changes implemented...
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