| 低温InGaAs/InAlAs多量子阱的分子束外延生长与表征 |
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| 引用本文： | 万文坚,尹嵘,韩英军,王丰,郭旭光,曹俊诚.低温InGaAs/InAlAs多量子阱的分子束外延生长与表征[J].强激光与粒子束,2013,25(6):1523-1526. |
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| 作者姓名： | 万文坚 尹嵘 韩英军 王丰 郭旭光 曹俊诚 |
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| 作者单位： | 1.中国科学院上海微系统与信息技术研究所,太赫兹固态技术重点实验室,上海 200050 |
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| 摘 要： | 采用气源分子束外延(GSMBE)生长了低温InGaAs材料，研究了生长温度及As压对InGaAs材料性质的影响，得到优化的生长条件为:生长温度为300 ℃、As压为77.3 kPa。通过Be掺杂，并采用In0.52Al0.48As/In0.53Ga0.47As多量子阱结构，将材料的方块电阻提高到1.632106 /Sq，载流子数密度降低至1.0581014 cm-3。X射线衍射结果表明:InGaAs多量子阱材料具有较高的晶体质量。这种Be掺杂InGaAs多量子阱材料缺陷密度大且电阻率高，是制作太赫兹光电导天线较理想的基质材料。收稿日期:; 修订日期:
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| 关 键 词： | 低温InGaAs InGaAs/InAlAs 多量子阱 分子束外延 |
| 收稿时间： | 2012-11-12; |
Molecular beam epitaxy growth and characterization of low-temperature InGaAs/InAlAs multiple quantum wells |
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| Wan Wenjian,Yin Rong,Han Yingjun,Wang Feng,Guo Xuguang,Cao Juncheng.Molecular beam epitaxy growth and characterization of low-temperature InGaAs/InAlAs multiple quantum wells[J].High Power Laser and Particle Beams,2013,25(6):1523-1526. |
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| Authors: | Wan Wenjian Yin Rong Han Yingjun Wang Feng Guo Xuguang Cao Juncheng |
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| Affiliation: | 1.Key Laboratory of Terahertz Solid-State Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China |
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| Abstract: | Low temperature (LT) InGaAs materials were grown by gas source molecular beam epitaxy, and the influence of growth temperature as well as arsenic pressure on InGaAs material properties was studied. The optimized deposition conditions were established with the growth temperature of 300 ℃ and the arsenic pressure of 77.3 kPa. By using the structure of In0.52Al0.48As/In0.53Ga0.47As multiple quantum well and doping with Be into InGaAs layers, the resistance of LT-InGaAs material was increased to 1.632×106 Ω/Sq, and the carrier concentration was reduced to 1.058×1014 cm-3. X-ray diffraction measurements show that LT-InGaAs multiple quantum wells have perfect crystal quality. This multiple quantum well material doped with Be has high trap density and high resistivity, which is suitable material for THz photoconductive antennas. |
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| Keywords: | InGaAs/InAlAs multiple quantum wells molecular beam epitaxy |
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