NDLI: Silicon solar cell process development, fabrication and analysis (Document No: 19820002627)

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Silicon solar cell process development, fabrication and analysis (Document No: 19820002627)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Leung, D. C. Yoo, H. I. Iles, P. A.
Copyright Year	1981
Description	Solar cells were fabricated from EFG ribbons dendritic webs, cast ingots by heat exchanger method, and cast ingots by ubiquitous crystallization process. Baseline and other process variations were applied to fabricate solar cells. EFG ribbons grown in a carbon-containing gas atmosphere showed significant improvement in silicon quality. Baseline solar cells from dendritic webs of various runs indicated that the quality of the webs under investigation was not as good as the conventional CZ silicon, showing an average minority carrier diffusion length of about 60 um versus 120 um of CZ wafers. Detail evaluation of large cast ingots by HEM showed ingot reproducibility problems from run to run and uniformity problems of sheet quality within an ingot. Initial evaluation of the wafers prepared from the cast polycrystalline ingots by UCP suggested that the quality of the wafers from this process is considerably lower than the conventional CZ wafers. Overall performance was relatively uniform, except for a few cells which showed shunting problems caused by inclusions.
File Size	4351296
Page Count	100
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19820002627
Archival Resource Key	ark:/13960/t46q6s849
Language	English
Publisher Date	1981-06-30
Access Restriction	Open
Subject Keyword	Energy Production And Conversion Solar Cells Fabrication Casting Solar Arrays Dendritic Crystals Solar Energy Conversion Wafers Low Cost Crystallization Heat Exchangers Current Density Energy Conversion Efficiency Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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