Lithium Doped Hardened Solar Cell Optimization. Part I. Solar Cell and Test Equipment Development.
Abstract
The report describes the work done on developing a hardened lithium doped P/N silicon solar cell. Part I includes studies of the solar cell, the method of depositing an integral cover, the method of interconnecting cells, the design of a flexible array and the design of a solar cell automatic test system. Hardened lithium solar cell performance characteristics (10% to 12% efficiencies) were shown to be similar to conventional N/P solar cells. Methods for reliably interconnecting the cells with a wraparound interconnector and mounting the cells on a flexible substrate are presented. An ultrasonic bonding technique was developed which provided a solderless method for bonding the interconnector metal tabs to the solar cell. Experiments showed that hardened cells and complete arrays were thermal cycled from -196C to 400C without failure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1970
- Accession Number
- AD0871268
Entities
People
- Edward F. Zimmerman
- Eugene L. Ralph
- Howard Somberg
- James N. Lovelady
- Patricia A. Payne