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1. 中国科学院上海冶金研究所信息功能材料国家重点实验室,上海,200050
2. 中国科
Published:01 March 2000
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[1]多新中,刘卫丽,张苗,高剑侠,符晓荣,林成鲁.硅中注氢热退火在晶体中产生的应力及其对晶体结构的影响[J].核技术,2000(03):145-149.
Annealing effect of H~+ -implanted single crystal silicon on strain and crystal structure[J]. Nuclear techniques, 2000, (3): 145-149.
用X射线四晶衍射仪测量了不同温度下退火的注氢单晶硅的摇摆曲线,分析了不同温度退火后晶格内应力产生及消失的过程。并与离子背散射沟道分析进行了比较。结果表明,在400℃左右,氢注入形成的氢复合体分解;形成氢分子,氢分子在晶格中聚集,生成氢气,在高温下膨胀,引起晶格形变,并产生缺陷;当退火温度达到500℃以后,氢气的膨胀已超过晶体的屈服强度,产生了大量的缺陷、位错,同时在硅晶体内形成气泡,并在硅晶体表面造成砂眼、剥离等现象。
This work focuses on the rocking curves of H~+-implanted single silicon crystal detected by Four-Crystal X-ray diffractmeter. The samples were annealed under different temperatures. Lattice defect in H+-implanted silicon crystals was detected by Rutherford Backscattering Spectrometry. It appeared that H-related complex didn’t crush until annealing temperature reached about 400C. At that temperature Hi was formed
deflated in silicon lattice and strained the lattice. But defects didn’t come into being in large quantity. The lattice was undamaged. When annealing temperature reached 500
strain induced by H2 deflation crashed the silicon lattice. A large number of deflects were formed. At the same time bubbles in the crystal and blister/flaking on the surface could be observed.
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