Automated fabrication of back surface field silicon solar cells with screen printed wraparound contacts. Final report
The development of a process for fabricating 2 x 4 cm back surface field silicon solar cells having screen printed wraparound contacts is described. This process was specifically designed to be amenable for incorporation into the automated nonvacuum production line. Techniques were developed to permit the use of screen printing for producing improved back surface field structures, wraparound dielectric layers, and wraparound contacts. The optimized process sequence was then used to produce 1852 finished cells. Tests indicated an average conversion efficiency of 11% at AMO and 28 C, with an average degradation of maximum power output of 1.5% after boiling water immersion or thermal shock cycling. Contact adherence was satisfactory after these tests, as well as long term storage at high temperature and high humidity.
- Research Organization:
- Spectrolab, Inc., Sylmar, Calif. (USA)
- DOE Contract Number:
- NAS3-20029
- OSTI ID:
- 6882548
- Report Number(s):
- N-77-32590; NASA-CR-135202; REPT-380-5313
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of thin wraparound junction silicon solar cells. Final report, Sep. 1980 - Nov. 1981
Method for formation of high quality back contact with screen-printed local back surface field