Title :
Basic properties of the spheral solar cell
Author :
Levine, J.D. ; Hotchkiss, Gregory B. ; Hammerbacher, Milfred D.
Author_Institution :
Texas Instruments, Dallas, TX, USA
Abstract :
Spheral solar technology consists of silicon spheres embedded in aluminum foil. Sphere processing consists of obtaining metallurgical-grade silicon feedstock in the form of irregular shaped particles, melting them into spheres, upgrading them in purity, and diffusion. Cell processing consists of bonding the spheres to a perforated foil, exposing the core, and applying an insulator and a backfoil to complete the cell. Flexible 10 cm2 solar cells of 10 cm2 are repeatably produced with average and peak efficiencies of 10% and 11%, respectively
Keywords :
aluminium; elemental semiconductors; silicon; solar cells; 10 percent; 11 percent; Al-Si; backfoil; diffusion; insulator; irregular shaped particles; melting; metallurgical-grade silicon feedstock; perforated foil; spheral solar cell; Aluminum; Bonding; Costs; Energy storage; Gettering; Impurities; Photovoltaic cells; Silicon; Slag; Throughput;
Conference_Titel :
Photovoltaic Specialists Conference, 1991., Conference Record of the Twenty Second IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-87942-636-5
DOI :
10.1109/PVSC.1991.169370
