Quality of n-Type Czochralski Silicon Crystals for Solar Cells Grown from the Melt in Liquinert Crucibles. (1st January 2018)

• Record Type: Journal Article
• Authors: Fukuda, Tetsuo; Horioka, Yukichi; Kariya, Nobumasa; Tanahashi, Katsuto; Takato, Hidetaka
• Is Part Of: ECS journal of solid state science and technology. Volume 7:Number 10(2018)
• Page Start: P562
• Page End: P566
• Publication Date: 2018-01-01
• Subjects: Semiconductors - Silicon -- Czochralski silicon -- lifetime -- silica crucible; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0121810jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : For the application to advanced high-performance solar cells, we have developed n-type CZ monocrystalline silicon crystals whose lifetime values are almost equal to those of MCZ silicon. We analyzed this point in detail, using the Shockley-Read-Hall model. In our growth, liquinert silica crucibles having non-wettable properties for molten silicon were employed in a conventional CZ puller. The improved lifetime is likely due to reduced carbon impurity. The CZ growth technique with liquinert crucibles brings a novel approach to the new CZ technique because it can supply higher-quality silicon compared to silicon grown by conventional CZ technique.