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Conference Proceedings. Eleventh International Conference on Indium Phosphide and Related Materials (IPRM'99) (Cat. No.99CH36362)最新文献

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Characterization of He-plasma-assisted GSMBE InGaAsP he等离子体辅助GSMBE在aasp中的表征
H. Pinkney, D. Thompson, B. Robinson, P. Simpson, U. Myler, R. Streater
In this paper, we present the properties of InGaAsP (1.55 /spl mu/m) grown by He-plasma-assisted GSMBE. Variable energy positron annihilation studies, room temperature hall effect measurements and SIMS analysis have been performed. It is evident that this material contains traps which reduce the carrier concentration in both doped and undoped samples, open volume defects which enlarge upon anneal, and a small concentration of hydrogen, all of which may play a role in the behavior of this novel material.
本文报道了he等离子体辅助GSMBE生长InGaAsP (1.55 /spl mu/m)的性质。变能正电子湮灭研究,室温霍尔效应测量和SIMS分析已经完成。很明显,该材料中含有降低掺杂和未掺杂样品中载流子浓度的陷阱,在退火后扩大的开体积缺陷,以及小浓度的氢,所有这些都可能在这种新材料的行为中起作用。
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引用次数: 0
Submicron transferred-substrate heterojunction bipolar transistors with greater than 8000 GHz f/sub max/ 大于8000ghz /sub max/的亚微米转移衬底异质结双极晶体管
Q. Lee, S. Martin, D. Mensa, R.P. Smith, J. Guthrie, S. Jaganathan, T. Mathew, S. Krishnan, S. Creran, M. Rodwell
We report submicron transferred-substrate AlInAs/GaInAs heterojunction bipolar transistors. Devices with 0.4 /spl mu/m emitter and 0.9 /spl mu/m collector widths have 17.5 dB unilateral gain at 110 GHz. Extrapolating at -20 dB/decade, the power gain cut-off frequency f/sub max/ is 820 GHz.
我们报道了亚微米转移衬底AlInAs/GaInAs异质结双极晶体管。发射极宽度为0.4 /spl μ /m、集电极宽度为0.9 /spl μ /m的器件在110 GHz时单边增益为17.5 dB。外推-20 dB/ 10,功率增益截止频率f/sub max/为820 GHz。
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引用次数: 25
Observation of resonant tunneling through InAs quantum dots by using novel electrophotoluminescence spectroscopy 用新型电泳发光光谱法观察InAs量子点的共振隧穿
Y. Ohno, K. Asaoka, S. Kishimoto, K. Maezawa, T. Mizutani
The resonant tunneling through single InAs quantum dots embedded in an GaAs/i-Al/sub 0.38/Ga/sub 0.62/As/n-GaAs diode has been studied by using microscopic electrophotoluminescence spectroscopy. A group of sharp luminescence lines which originate from single quantum dots was observed by injecting resonant electrons from the emitter to the dots. Bias dependence of a single luminescence line has been investigated. The peak intensity shows triangular dependence which is similar to the current-voltage characteristics of 3D-0D resonant tunneling. When the bias voltage increases, the peak energy slightly shifts to a lower energy indicating the existence of stark effect, and the linewidth slightly increases. Moreover, the higher the luminescence energy is, the broader the linewidth is. This result agrees with the calculated resonant level width. The lifetime of resonant states is estimated to be 2.4-27 ps for luminescence linewidth of 250-22 /spl mu/eV.
利用显微电泳发光光谱研究了嵌入在GaAs/i-Al/sub 0.38/Ga/sub 0.62/As/n-GaAs二极管中的单个InAs量子点的共振隧穿。通过从发射极向量子点注入共振电子,观察到单个量子点产生的一组尖锐发光线。研究了单个发光线的偏置依赖性。峰值强度呈三角关系,与3D-0D谐振隧道的电流-电压特性相似。当偏置电压增加时,峰值能量略有向较低的能量偏移,表明存在斯塔克效应,线宽略有增加。发光能量越高,线宽越宽。该结果与计算的谐振能级宽度一致。当发光线宽度为250-22 /spl mu/eV时,谐振态寿命估计为2.4- 27ps。
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引用次数: 0
Improved excess noise and temperature dependence of multiplication characteristics in thin InP avalanching regions 改善了薄InP雪崩区倍增特性的过量噪声和温度依赖性
C. H. Tan, K.F. Li, S. Plimmer, J. David, G. Rees, J. Clark, C. Button
We report measurements of electron initiated avalanche noise at room temperature in a range of InP p/sup +/-i-n/sup +/ diodes with i-region widths, M ranging from 2.40 /spl mu/m to 0.24 /spl mu/m. A significant reduction in excess noise is observed with decreasing w at constant multiplication. We also report electron initiated photomultiplication and breakdown voltage of InP p/sup +/-i-n/sup +/ diodes with nominal i-region widths of 0.30 /spl mu/m and 0.50 /spl mu/m at temperatures ranging from 20 K to 300 K. Improved temperature stability is observed as the avalanche region width is reduced.
我们报告了在室温下电子引发雪崩噪声的测量,测量范围为InP p/sup +/-i-n/sup +/二极管,其i-区域宽度M范围为2.40 /spl mu/ M至0.24 /spl mu/ M。在恒定乘法下,随着w的减小,观察到多余噪声的显著减少。我们还报道了InP p/sup +/-i-n/sup +/二极管的电子激发光电倍增和击穿电压,标称i区宽度为0.30 /spl mu/m和0.50 /spl mu/m,温度范围为20 K至300 K。随着雪崩区宽度的减小,温度稳定性得到了改善。
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引用次数: 2
VGF crystal growth and vapor-phase Fe doping technologies for semi-insulating 100 mm diameter InP substrates 半绝缘100mm直径InP衬底的VGF晶体生长和气相Fe掺杂技术
T. Asahi, M. Uchida, K. Kainosho, O. Oda
100 mm diameter <100> semi-insulating InP substrates were obtained after conductive undoped wafers were annealed under volatile FeP/sub 2/ atmosphere. Undoped crystals were grown by the VGF method using a high pressure furnace. In this growth method, we investigated the reduction of the temperature fluctuation by computer simulation for preventing twinning. The temperature fluctuation near the seed crystal could be reduced from /spl plusmn/0.3/spl deg/C to /spl plusmn/0.03/spl deg/C after improvement of the hot-zone, based on the simulation results. Semi-insulating InP is conventionally produced by Fe doping during crystal growth. In the conventional doping method, the Fe concentration is varied along the growth axis due to Fe segregation in InP. In order to obtain good homogeneity of Fe concentrations from wafer to wafer, we have developed a new Fe doping technology in which wafers are annealed under volatile FeP/sub 2/ atmosphere. In this work, we applied this Fe doping technology to 100 mm diameter <100> InP substrates and could obtain large diameter semi-insulating substrates.
在挥发性FeP/亚2/气氛下对未掺杂的导电硅片进行退火处理,得到了直径为100mm的半绝缘InP衬底。采用高压炉VGF法生长未掺杂晶体。在这种生长方法中,我们通过计算机模拟研究了降低温度波动以防止孪生的方法。模拟结果表明,改进热区后,晶种附近的温度波动从/spl plusmn/0.3/spl°C减小到/spl plusmn/0.03/spl°C。半绝缘InP通常是在晶体生长过程中由Fe掺杂产生的。在传统的掺杂方法中,由于InP中的铁偏析,铁浓度沿生长轴变化。为了获得良好的晶片间Fe浓度均匀性,我们开发了一种新的Fe掺杂技术,即在挥发性FeP/亚2/气氛下对晶片进行退火。在这项工作中,我们将这种Fe掺杂技术应用于直径为100mm的InP衬底,可以获得大直径的半绝缘衬底。
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引用次数: 2
InGaAs/GaAs strained quantum wires grown by OMCVD on corrugated substrates 在波纹衬底上OMCVD生长InGaAs/GaAs应变量子线
F. Lelarge, K. Leifer, A. Condó, V. Iakovlev, E. Martinet, C. Constantin, A. Rudra, E. Kapon
Self-ordered, strained InGaAs/GaAs quantum structures are grown on V-grooved GaAs substrates. Indium segregation at the bottom of the groove results in the formation of a vertical InGaAs quantum well structure with In-enriched composition. The lateral definition permits the growth of defect-free strained structures with thickness exceeding that achieved with planar epitaxy. We study the influence of the nominal thickness and In content on the photoluminescence peak wavelength of V-grooved quantum wires. Finally, room temperature emission at 1.12 /spl mu/m with relatively narrow linewidth (30-35 meV) is demonstrated.
在v型沟槽GaAs衬底上生长了自有序、应变的InGaAs/GaAs量子结构。凹槽底部的铟偏析形成了富in成分的垂直InGaAs量子阱结构。横向定义允许生长厚度超过平面外延的无缺陷应变结构。研究了v槽量子线标称厚度和In含量对其光致发光峰值波长的影响。最后,展示了1.12 /spl mu/m的室温发射,相对较窄的线宽(30-35 meV)。
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引用次数: 2
A novel GaInAsP microcylinder laser with AlInAs(O/sub x/) claddings 带有AlInAs(O/sub x/)包层的新型GaInAsP微柱激光器
M. Fujita, T. Baba, A. Matsutani, F. Koyama, K. Iga
We have proposed and demonstrated a novel 1.5-/spl mu/m-GaInAsP microcylinder laser with low refractive index InAlAs(O/sub x/) claddings, which allows the strong optical confinement as in a microdisk. The effective threshold current density was 25% lower than that for the previous 0.98-/spl mu/m-GaInAs device. The selective oxidation of the claddings is expected to further reduce the threshold and extend the feasibility of this type of device in large scale photonic circuits.
我们提出并演示了一种新颖的1.5-/spl mu/m-GaInAsP微柱激光器,具有低折射率InAlAs(O/sub x/)包层,它允许在微磁盘中具有强光约束。有效阈值电流密度比先前的0.98-/spl mu/m-GaInAs器件低25%。包层的选择性氧化有望进一步降低阈值,并扩大这类器件在大规模光子电路中的可行性。
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引用次数: 3
Large number of periods in highly strained InGaAlAs/InGaAlAs MQW structures grown by metalorganic vapor-phase epitaxy 金属有机气相外延生长高应变InGaAlAs/InGaAlAs MQW结构中的大量周期
T. Tsuchiya, D. Takemoto, A. Taike, M. Aoki, K. Uomi
We have found that the crystalline quality at the well-barrier interfaces of an InGaAlAs strain-compensated MQW structure grown by MOVPE is much higher than that of an InGaAsP strain-compensated MQW structure, especially for a high strain. A large number of periods (25) in a highly strained (+1.4%) InGaAlAs MQW structure was obtained while preserving high crystalline quality by using the InGaAlAs strain-compensated structure.
我们发现,MOVPE生长的InGaAlAs应变补偿MQW结构在井势垒界面处的晶体质量远高于InGaAsP应变补偿MQW结构,特别是在高应变下。使用InGaAlAs应变补偿结构,在保持高晶体质量的同时,获得了高应变(+1.4%)InGaAlAs MQW结构中的大量周期(25)。
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引用次数: 11
Energy relaxation by multiphonon processes in partially ordered (Al/sub 0.5/Ga/sub 0.5/)/sub 0.5/In/sub 0.5/P 部分有序(Al/sub 0.5/Ga/sub 0.5/)/sub 0.5/ in /sub 0.5/P中多声子过程的能量弛豫
T. Kita, M. Sakurai, K. Yamashita, T. Nishino
We demonstrate inelastic phonon scattering to be the dominant intradomain carrier-relaxation mechanism in partially ordered (Al/sub 0.5/Ga/sub 0.5/)/sub 0.5/In/sub 0.5/P. Carrier relaxation and recombination in partially ordered (Al/sub 0.5/Ga/sub 0.5/)/sub 0.5/In/sub 0.5/P have been studied by selectively excited photoluminescence (PL) spectroscopy. The partial ordering of the column-III sublattices causes a multidomain structure in the epitaxial film. The strongly modulated near-resonant excitation efficiency enables selective excitation of the ordered domains with a ground-state transition energy below the excitation energy, In the selectively excited PL spectra, we observed LA-phonon resonances as well as LO-phonon resonances. The LA-phonon resonances are new phonon modes caused by zone-folding effects and alloy disordering effects in the ordered alloy. The observation of the phonon resonances in the PL spectra is discussed in analogy to hot exciton relaxation in higher dimensional semiconductor system and proposed to be intricately bound to the inhomogeneity of the ordered domain ensemble.
我们证明了非弹性声子散射是部分有序(Al/sub 0.5/Ga/sub 0.5/)/sub 0.5/ in /sub 0.5/P中主要的域内载流子弛豫机制。利用选择性激发光致发光(PL)技术研究了部分有序(Al/sub 0.5/Ga/sub 0.5/)/sub 0.5/ in /sub 0.5/P中的载流子弛豫和复合。iii列亚晶格的偏序导致外延膜中的多畴结构。强调制的近共振激发效率使得基态跃迁能量低于激发能量的有序域能够被选择性激发。在选择性激发的PL光谱中,我们观察到la声子共振和lo声子共振。la -声子共振是由有序合金中的区域折叠效应和合金无序效应引起的新的声子模式。声子共振在PL光谱中的观察与高维半导体系统中的热激子弛豫类似,并提出与有序域系综的非均匀性复杂地联系在一起。
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引用次数: 0
InP- and GaAs-based quantum cascade lasers 基于InP和gaas的量子级联激光器
M. Beck, A. Muller, J. Faist, C. Sirtori, U. Oesterle, M. Ilegems
We report quantum cascade lasers grown on InP and GaAs by molecular beam epitaxy. On InP, lattice matched structures exceeding 80 mW of pulsed optical power at room temperature are electrically tunable from 10.2 to 10.5 /spl mu/m. Strain compensated heterostructures emitting at 4.9 /spl mu/m operate almost up to room temperature. The first lasing AlGaAs/GaAs quantum cascade laser emitting at 9.4 /spl mu/m and operating up to 160 K is also presented.
我们报道了用分子束外延在InP和GaAs上生长的量子级联激光器。在InP上,室温下超过80 mW脉冲光功率的晶格匹配结构可在10.2 ~ 10.5 /spl mu/m范围内电可调。发射频率为4.9 /spl mu/m的应变补偿异质结构几乎可以在室温下工作。本文还研制出了第一种激光AlGaAs/GaAs量子级联激光器,激光器发射速度为9.4 /spl μ m,工作温度高达160 K。
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引用次数: 7
期刊
Conference Proceedings. Eleventh International Conference on Indium Phosphide and Related Materials (IPRM'99) (Cat. No.99CH36362)
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