Boron-Related Defects in N-Type 4H-SiC Schottky Barrier Diodes

被引:4
作者
Knezevic, Tihomir [1 ]
Jelavic, Eva [2 ]
Yamazaki, Yuichi [3 ]
Ohshima, Takeshi [3 ]
Makino, Takahiro [3 ]
Capan, Ivana [1 ]
机构
[1] Rudjer Boskovic Inst, Bijenicka 54, Zagreb 10000, Croatia
[2] Univ Zagreb, Fac Sci, Bijenicka 32, Zagreb 10000, Croatia
[3] Natl Inst Quantum Sci & Technol, 1233 Watanuki, Takasaki 3701292, Japan
关键词
silicon carbide; boron; defects; MINORITY-CARRIER TRAPS; LIFETIME; DIFFUSION; CENTERS;
D O I
10.3390/ma16093347
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report on boron-related defects in the low-doped n-type (nitrogen-doped) 4H-SiC semitransparent Schottky barrier diodes (SBDs) studied by minority carrier transient spectroscopy (MCTS). An unknown concentration of boron was introduced during chemical vapor deposition (CVD) crystal growth. Boron incorporation was found to lead to the appearance of at least two boron-related deep-level defects, namely, shallow (B) and deep boron (D-center), with concentrations as high as 1 x 10(15) cm(-3). Even though the boron concentration exceeded the nitrogen doping concentration by almost an order of magnitude, the steady-state electrical characteristics of the n-type 4H-SiC SBDs did not deteriorate.
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页数:8
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