High Efficiency c-Silicon Solar Cells Based on Micro-Nanoscale Structure

摘要

This report describes our aim to develop high-efficiency crystalline silicon (c-Si) solar cells with increased power conversion efficiency (>30%) in order to reduce solar array mass, stowed volume, and cost. Our approach is based upon increasing the electrical junction area per unit volume using microblock design and fabrication. Current thin-film and c-Si solar cells have a limited conversion efficiency of 10-20% and cost $3-$5/W-peak and state-of- the-art crystalline multijunction solar cells have a approx. 30% efficiency and cost $30-$40/W-peak. Increasing the conversion efficiency to >30% enables a reduction in cost to.