期刊文献+

非平衡磁控溅射沉积Ta-N薄膜的结构与电学性能研究 被引量:11

The microstructure and electrical properties of Ta-N films synthesized by unbalanced magnetron sputtering
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摘要 采用直流反应非平衡磁控溅射技术在单晶Si(100)和玻璃表面沉积氮化钽(Ta-N)薄膜。分别测试了薄膜的结构、成分、电阻率和吸收光谱,研究了氯氩流量比(N2:Ar)变化对Ta—N薄膜的结构和电学性能的影响。研究结果表明随N2:Ar增加,依次生成六方结构的γ-Ta2N、面心立方结构(fcc)的δ-TaNx体心四方结构(bct)的TaNx;N2:Ar在0.2~0.8的范围内,Ta—N薄膜中只存在着fcc δ-TaNx;当N2:Ar〉1之后,Ta—N薄膜中fCC δ-TaN,和bct TaNx共存。Ta—N薄膜电阻率随N2:Ar流量比增加持续增加,当N2:Ar为1.2时,薄膜变为绝缘体,光学禁带宽度为1.51eV。 Tantalum nitride films (Ta-N) were fabricated on Si(100) and glass substrate by DC reactive unbalanced magnetron sputtering. The influence of nitrogen-to-argon flow ratios (N2 : Ar) on the microstructure and electrics properties was studied. The results indicated that hexagonal structure γ-TazN, face-centered cubic (fcc) δ-TaNx and body-centered tetragonal (bct) TaNx was grown with increasing N2 : Ar in turn. The metastable single-phase fcc δ-TaNx was formed while the N2 : Ar ratio from 0.2 to 0.8. The δ-TaNx and bct TaNx were existing in Ta-N film at N2 : Ar〉1. The resistivity of Ta-N films was increasing with increasing N2 : Ar, and the film is the insulator with 1.51eV band-gap at N2 : Ar ratio 1.2.
出处 《功能材料》 EI CAS CSCD 北大核心 2006年第10期1593-1595,1602,共4页 Journal of Functional Materials
基金 国家自然科学基金资助项目(30400109#) 四川省青年科技基金会资助项目(06ZQ026-015)
关键词 Ta-N 薄膜 非平衡磁控溅射 反应溅射 XRD 电阻率 tantalum nitride film unbalanced magnetron sputtering reactive sputtering XRD resistivity
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