Study of nitrogen incorporation in 6H-SiC single crystals grown by PVT

被引:17
|
作者
Schulz, D [1 ]
Irmscher, K [1 ]
Dolle, J [1 ]
Eiserbeck, W [1 ]
Müller, T [1 ]
Rost, HJ [1 ]
Siche, D [1 ]
Wagner, G [1 ]
Wollweber, J [1 ]
机构
[1] Inst Kristallzuchtung, DE-12489 Berlin, Germany
关键词
6H polytype; nitrogen concentration; seed orientation; sublimation bulk growth;
D O I
10.4028/www.scientific.net/MSF.338-342.87
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The incorporation of nitrogen during single crystal growth of silicon carbide via the vapour phase has been studied in the concentration range of 3(.)10(17) cm(-3) less than or equal to c(N) less than or equal to 3(.)10(19) cm(-3). The nitrogen concentration was measured by secondary ion mass spectrometry (SIMS) and the net doping concentration by capacitance-voltage measurements (CV). In general with increasing the ratio N-2/(N-2+Ar) the nitrogen concentration in the crystals also increases resulting in a function of the square root of nitrogen partial pressure. Furthermore the influence of the seed orientation on the nitrogen level was investigated.
引用
收藏
页码:87 / 90
页数:4
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