arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.04855cond-mat.mtrl-scicond-mat.mes-hallphysics.app-ph
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MOVPE生长的Si掺杂\b{eta} -(Al0.26Ga 0.74)2 O3薄膜和异质结构

MOVPE-grown Si-doped \b{eta}-(Al0.26Ga0.74)2O3 thin films and heterostructures

Praneeth Ranga, Ashwin Rishinaramangalam, Joel Varley, Arkka Bhattacharyya, Daniel Feezell, Sriram Krishnamoorthy

摘要:

本文报道了MOVPE生长的\b{eta} -(Al_(0.26)Ga_(0.74))_2 O_3外延薄膜的n型简并掺杂和\b{eta} -(Al_(0.26)Ga_(0.74))_2 O_3/ \b{eta} -Ga_2 O_3异质结构的调制掺杂。使用HRXRD测量确认合金组成。薄膜中的载流子浓度与硅烷摩尔流量成正比。室温霍尔测量表明,在均匀掺杂的\b{eta} -(Al 0.26 Ga 0.74)2 O3层中,载流子浓度为6 × 1018 - 7.3 × 1019 cm-3,相应的电子迁移率为53-27 cm 2/V.s。调制掺杂用于在使用均匀掺杂的\b{eta}-(Al0.26Ga0.74)2 O3阻挡层和薄间隔层的\b{eta}-(Al0.26Ga0.74)2 O3/ \b{eta} -Ga 2 O3异质结构中实现2.3 × 1012 cm-2的总电子片电荷。

英文摘要:

We report on n-type degenerate doping in MOVPE grown \b{eta}-(Al0.26Ga0.74)2O3 epitaxial thin films and modulation doping in \b{eta}-(Al0.26Ga0.74)2O3/\b{eta}-Ga2O3 heterostructure. Alloy composition is confirmed using HRXRD measurements. Carrier concentration in the thin films is proportional to the silane molar flow. Room temperature hall measurements showed a high carrier concentration of 6x1018-7.3x1019 cm-3 with a corresponding electron mobility of 53-27 cm2/V.s in uniformly-doped \b{eta}-(Al0.26Ga0.74)2O3 layers. Modulation doping is used to realize a total electron sheet charge of 2.3x1012 cm-2 in a \b{eta}-(Al0.26Ga0.74)2O3/\b{eta}-Ga2O3 heterostructure using a uniformly-doped \b{eta}-(Al0.26Ga0.74)2O3 barrier layer and a thin spacer layer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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