Evidence for the effect of carbon on oxygen precipitation in Czochralski silicon crystal

2000 ◽  
Vol 87 (8) ◽  
pp. 3669-3673 ◽  
Author(s):  
Peidong Liu ◽  
Xiangyang Ma ◽  
Jinxin Zhang ◽  
Liben Li ◽  
Duanlin Que
Keyword(s):  
Silicon Crystal ◽  
Czochralski Silicon ◽  
Oxygen Precipitation

Germanium in Czochralski Silicon

2005 ◽  
Vol 242-244 ◽  
pp. 169-184 ◽  
Author(s):  
De Ren Yang ◽  
Jiahe Chen
Keyword(s):  
Mechanical Strength ◽  
Crystal Lattice ◽  
Silicon Crystal ◽  
Zone Formation ◽  
Czochralski Silicon ◽  
Oxygen Precipitation

The behaviors of isovalent impurities doped in Czochralski (CZ) silicon crystal have attracted considerable attention in recent years. In this article, a review concerning recent processes in the study about germanium in CZ silicon is presented. The disturbance of silicon crystal lattice in and the influence on the mechanical strength due to germanium doping is described. Oxygen related donors, oxygen precipitation and voids defects in germanium doped Czochralski (GCZ) silicon has been demonstrated in detail. In addition, the denuded zone formation and the internal gettering technology of GCZ silicon is also discussed.

Nucleation of Oxygen Precipitates in a Quenched Czochralski Silicon Crystal

1992 ◽  
Vol 262 ◽  
Author(s):  
A. Ikari ◽  
H. Haga ◽  
O. Yoda ◽  
A. Uedono ◽  
Y. Ujihira
Keyword(s):  
Annealing Temperature ◽  
Silicon Crystal ◽  
Ir Absorption ◽  
Quenching Temperature ◽  
Annealing Behavior ◽  
Czochralski Silicon ◽  
Oxygen Precipitation ◽  
Ir Absorption Spectra ◽  
Oxygen Precipitates ◽  
Oxygen Complexes

ABSTRACTWe have studied the nucleation of oxygen precipitates in Czochralski (Cz) Si crystal quenched from high temperature (1390°C). We observed that the oxygen precipitation was enhanced by the quenching treatment. We found the density of precipitates in the quenched crystal depended on quenching temperature and that nuclei for oxygen precipitates were introduced during quenching. We studied these nuclei using infrared absorption (IR) and positron annihilation techniques. In order to clarify the state of the nuclei, the quenched specimens were irradiated with 3-MeV electrons at a dose of 1×1018e/cm2 and vacancy-oxygen complexes were introduced. Positron lifetime spectra and IR absorption spectra for these specimens were measured as a function of isochronal annealing temperature. From the annealing behavior of the vacancy-oxygen complexes, it was found that oxygen clusters are introduced by the quenching and these clusters are the nuclei for the enhanced precipitation of the quenched Si crystal.

Oxygen Precipitation in Conventional and Nitrogen Co-Doped Heavily Arsenic-Doped Czochralski Silicon Crystals: Oswald Ripening

2009 ◽  
Vol 156-158 ◽  
pp. 275-278
Author(s):  
Xiang Yang Ma ◽  
Yan Feng ◽  
Yu Heng Zeng ◽  
De Ren Yang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Czochralski Silicon ◽  
Silicon Crystals ◽  
Oxygen Precipitation ◽  
High Temperature Anneal ◽  
Oxygen Precipitates ◽  
Co Doped ◽  
Oswald Ripening

Oxygen precipitation (OP) behaviors in conventional and nitrogen co-doped heavily arsenic-doped Czocharalski silicon crystals subjected to low-high two-step anneals of 650 oC/8 h + 1000 oC/4-256 h have been comparatively investigated. Due to the nitrogen enhanced nucleation of OP during the low temperature anneal, much higher density of oxygen precipitates generated in the nitrogen co-doped specimens. With the extension of high temperature anneal, Oswald ripening of OP in the nitrogen co-doped specimens preceded that in the conventional ones. Moreover, due to the Oswald ripening effect, the oxygen precipitates in the conventional specimens became larger with a wider range of sizes. While, the sizes of oxygen precipitates in the nitrogen co-doped specimens distributed in a much narrower range with respect to the conventional ones.

Oxygen Precipitation in Heavily Phosphorus-doped Czochralski Silicon

2019 ◽  
Vol 18 (1) ◽  
pp. 1001-1011 ◽  
Author(s):  
Yuheng Zeng ◽  
Deren Yang ◽  
Xiangyang Ma ◽  
Xinpeng Zhang ◽  
Lixia Lin ◽  
...  
Keyword(s):  
Czochralski Silicon ◽  
Oxygen Precipitation ◽  
Phosphorus Doped

Enhancement of oxygen precipitation in quenched Czochralski silicon crystals

1989 ◽  
Vol 66 (8) ◽  
pp. 3958-3960 ◽  
Author(s):  
Akito Hara ◽  
Tetsuo Fukuda ◽  
Toru Miyabo ◽  
Iesada Hirai
Keyword(s):  
Czochralski Silicon ◽  
Silicon Crystals ◽  
Oxygen Precipitation

Measurement of temperature gradient in Czochralski silicon crystal growth

2001 ◽  
Vol 229 (1-4) ◽  
pp. 6-10 ◽  
Author(s):  
Xinming Huang ◽  
Toshinori Taishi ◽  
Tiefeng Wang ◽  
Keigo Hoshikawa
Keyword(s):  
Crystal Growth ◽  
Temperature Gradient ◽  
Silicon Crystal ◽  
Czochralski Silicon
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