Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)最新文献

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Electron-irradiation-induced disordering of CuPt-ordered GaInP studied by TEM-mode optical spectroscopy tem模式光谱学研究了CuPt-ordered GaInP的电子辐照致无序性
Y. Ohno, Y. Kawai, S. Takeda
{"title":"Electron-irradiation-induced disordering of CuPt-ordered GaInP studied by TEM-mode optical spectroscopy","authors":"Y. Ohno, Y. Kawai, S. Takeda","doi":"10.1109/SIM.1998.785102","DOIUrl":"https://doi.org/10.1109/SIM.1998.785102","url":null,"abstract":"Electron-irradiation-induced disordering in CuPt-ordered GaInP has been examined by in-situ photoluminescence and cathodoluminescence spectroscopy in a transmission electron microscope. A decrease of luminescence intensity by the electron-irradiation in the energy range above 120 keV has been observed, and we have shown that the decrease is due to the Frenkel-type defects on the Ga and In sublattices generated by electron-irradiation. We have proposed that an electron-irradiation-induced migration of the Ga and In-vacancies dominates the disordering in the dose range below 2/spl times/10/sup 20/ cm/sup -2/ cm.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126279634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes in interdiffusion associated with thermally oxidized GaAs 与热氧化GaAs相关的互扩散变化
R. M. Cohen, Gang Li, C. Jagadish, P. Burke, M. Gal
{"title":"Changes in interdiffusion associated with thermally oxidized GaAs","authors":"R. M. Cohen, Gang Li, C. Jagadish, P. Burke, M. Gal","doi":"10.1109/SIM.1998.785111","DOIUrl":"https://doi.org/10.1109/SIM.1998.785111","url":null,"abstract":"Thermal oxidation and subsequent processing steps were found to significantly affect interdiffusion in AlGaAs/GaAs quantum wells. GaAs layers were grown on top of the quantum wells and oxidized at 450 C, and this was followed with a nonoxidizing ambient during annealing at 950 C. The resulting oxide, largely composed of Ga/sub 2/O/sub 3/, affects the native defect concentration and interdiffusion rate. Low temperature photoluminescence demonstrated that the oxidation plus annealing process significantly increased the rate of interdiffusion relative to structures which were annealed but not oxidized. However, when oxide layers covered with Al were annealed at 950 C, the Ga/sub 2/O/sub 3/ was reduced and Ga interstitials were forced into the GaAs. Using Al layers of various thickness, different quantities of Ga interstitials were injected into the epitaxial layer and a consistent reduction in interdiffusion was related to the Al layer thickness. The results are found to be consistent with previously a proposed model of interdiffusion controlled by Ga vacancies.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121620891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phosphorus and arsenic incorporation during chemical beam epitaxial growth of strained GaAs/sub 1-x/P/sub x/ layers on GaAs(100) substrates GaAs(100)衬底上应变GaAs/sub - 1-x/P/sub -x/层化学束外延生长过程中磷和砷的掺入
D. Wildt, B. J. García, J. L. Castaño, J. Piqueras
{"title":"Phosphorus and arsenic incorporation during chemical beam epitaxial growth of strained GaAs/sub 1-x/P/sub x/ layers on GaAs(100) substrates","authors":"D. Wildt, B. J. García, J. L. Castaño, J. Piqueras","doi":"10.1109/SIM.1998.785067","DOIUrl":"https://doi.org/10.1109/SIM.1998.785067","url":null,"abstract":"Phosphorus and arsenic incorporation during chemical beam epitaxial growth (CBE) of GaAs/sub 1-x/P/sub x/ using triethylgallium (TEGa), tertiarybutylarsine (TBAs) and tertiarybutylphosphine (TBP) as precursors has been studied. Reflection high-energy electron diffraction intensity oscillations are used to measure the arsenic and phosphorus incorporation during group V controlled growth on a Ga-rich surface for different TBAs and TBAs+TBP fluxes. The so obtained phosphorus mole fraction is compared with the phosphorus composition measured by x-ray rocking curves on the strained GaAs/sub 1-x/P/sub x/ layers grown by conventional CBE with simultaneous supply of the group III and group V precursors and by atomic layer epitaxy (ALE) alternating the group III and group V fluxes. The phosphorus incorporation rate during CBE growth is lower than that measured during ALE and group V controlled growth but is still much higher than the incorporation rate reported for molecular beam epitaxial growth using elemental sources. Photoluminescence spectra show clearly strain effects in the heavy and light hole excitonic transitions.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129130002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Electrical and optical properties of as-grown and electron-irradiated ZnO 生长和电子辐照ZnO的电学和光学性质
D. Look, D. C. Reynolds, J. Hemsky, J. Sizelove, R.L. Jones, C. Litton, T. Wille, G. Cantwell, W. Harsch
{"title":"Electrical and optical properties of as-grown and electron-irradiated ZnO","authors":"D. Look, D. C. Reynolds, J. Hemsky, J. Sizelove, R.L. Jones, C. Litton, T. Wille, G. Cantwell, W. Harsch","doi":"10.1109/SIM.1998.785130","DOIUrl":"https://doi.org/10.1109/SIM.1998.785130","url":null,"abstract":"Large-diameter (up to 3-inch), n-type ZnO boules grown by a new vapor-phase transport method were studied by temperature-dependent Hall-effect (TDH) and photoluminescence (PL) measurements. From fits to the TDH data, the dominant donor has a concentration N/sub D/ of about 1/spl times/10/sup 17/ cm/sup -3/ and an energy of about 60 meV, close to the expected hydrogenic value, whereas the total acceptor concentration N/sub A/ is much lower, about 2/spl times/10/sup 15/ cm/sup -3/. The 2-K PL data include a series of at least seven sharp lines over the energy range 3.356-3.366 eV, and from polarization, magnetic-field, and annealing (up to 1000/spl deg/C) experiments, these lines are interpreted as donor-bound excitons associated with donor complexes having different spacings between the atomic species. Electron-irradiation experiments show an electrical and optical threshold, attributed to Zn displacements, at an electron bombardment energy of about 1.3 MeV. The irradiation creates acceptors and destroys shallow donors, but these effects are produced at much lower rates than those found in most other common semiconductor materials, such as Si, GaAs, and GaN.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125562584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical characterisation of Mg-related energy levels and compensation mechanism in Mg-doped GaN 掺镁氮化镓中镁相关能级的电特性及补偿机制
D. Seghier, H. Gíslason
{"title":"Electrical characterisation of Mg-related energy levels and compensation mechanism in Mg-doped GaN","authors":"D. Seghier, H. Gíslason","doi":"10.1109/SIM.1998.785119","DOIUrl":"https://doi.org/10.1109/SIM.1998.785119","url":null,"abstract":"Using admittance spectroscopy and optical deep-level transient spectroscopy (ODLTS) we investigate activation of acceptors in GaN:Mg samples induced by annealing. Conductance measurements reveal two peaks, H1 and H2, with activation energies 130 and 170 meV, respectively, from the valence band. The concentration of H1 is proportional to the acceptor concentration in the samples. Capacitance measurements show that H1, which we attribute to a Mg-related acceptor level, is the shallowest level in our samples. ODLTS spectra exhibit two electron traps at 0.28 and 0.58 eV from the conduction band. Their concentrations are too weak to influence the free carrier concentration. We conclude that compensation occurs through passivation of Mg acceptors by hydrogen, rather than self-compensation by new donor levels.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127925055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural, electronic and optical properties of AlN-based oxides on Si and GaN substrates Si和GaN衬底上aln基氧化物的结构、电子和光学性质
J. Olowolafe, I. Rău, J. Kolodzey, E. Chowdhury, K. Unruh, C. Swann
{"title":"Structural, electronic and optical properties of AlN-based oxides on Si and GaN substrates","authors":"J. Olowolafe, I. Rău, J. Kolodzey, E. Chowdhury, K. Unruh, C. Swann","doi":"10.1109/SIM.1998.785112","DOIUrl":"https://doi.org/10.1109/SIM.1998.785112","url":null,"abstract":"The properties of novel high-quality AlN-based oxides suitable for device applications are presented in this paper. The process steps employed in this investigation are similar to these of SiO/sub 2/, providing new technology for group III-nitride based electronic devices. The oxides were prepared by thermal oxidation of AlN films or direct deposition of ultra-pure aluminum in a O/sub 2/-N/sub 2/ ambient on Si or GaN substrates. The structure of the films depends on deposition conditions for oxidized AlN and on composition for the Al films deposited in the N/sub 2/-O/sub 2/ ambient. The dielectric constant was evaluated to be 12.74 while the effective charge density is about 10/sup 11/ cm/sup -2/ for fully oxidized AlN. The refractive index of the oxide was about 3.9 using infrared techniques. Our results indicate that the AlN-based oxides provide a wide choice of high-quality insulators for electronic and optoelectronic applications.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129535678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrical properties and thermal stability of Be-doped nonstoichiometric GaAs be掺杂非化学计量GaAs的电学性能和热稳定性
R. Lutz, P. Specht, R. Zhao, E. Weber
{"title":"Electrical properties and thermal stability of Be-doped nonstoichiometric GaAs","authors":"R. Lutz, P. Specht, R. Zhao, E. Weber","doi":"10.1109/SIM.1998.785088","DOIUrl":"https://doi.org/10.1109/SIM.1998.785088","url":null,"abstract":"Beryllium doping of arsenic rich GaAs grown by MBE at low temperatures (LT-GaAs) allows one to grow GaAs with ultrashort carrier lifetimes at growth temperatures of 250/spl deg/ to 300/spl deg/C. Hall effect and resistivity measurements showed that in as-grown samples hopping conduction can be suppressed in this growth temperature range. Semi-insulating behavior of as-grown LT-GaAs:Be can be achieved by careful adjustment of temperature and Be-doping. In addition, Be-doped LT-GaAs grown in this temperature range shows increased thermal stability of the arsenic antisite defects (As/sub Ga/).","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130153661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Twinning of As precipitates in low-temperature GaAs during high temperature annealing 高温退火过程中低温砷化镓中As析出物的孪生
S. Ruvimov, C. Dieker, J. Washburn, Z. Liliental-Weber
{"title":"Twinning of As precipitates in low-temperature GaAs during high temperature annealing","authors":"S. Ruvimov, C. Dieker, J. Washburn, Z. Liliental-Weber","doi":"10.1109/SIM.1998.785091","DOIUrl":"https://doi.org/10.1109/SIM.1998.785091","url":null,"abstract":"Twinning of nano-scale As precipitates formed in low-temperature GaAs during high temperature annealing was studied by high resolution electron microscopy. Symmetrical {1~104~} twins were nucleated during crystallization of amorphous or liquid-like As precipitates. Nucleation of rhombohedral As appears to be most favorable on the short facet that is parallel to the {111}B plane of the GaAs. Twin formation then often initiates on the long facet bounded by the {111}A plane. The crystallization front terminates with a void because of the shrinkage of the As volume during solidification.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124200413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
InAs/In/sub 0.52/Al/sub 0.48/As quantum wire structure with the specific layer-ordering orientation on InP[001] InP上具有层序取向的InAs/In/sub 0.52/Al/sub 0.48/As量子线结构[001]
J. Wu, B. Xu, H. Li, Q. W. Mo, Z. Wang, X. M. Zhao, D. Wu
{"title":"InAs/In/sub 0.52/Al/sub 0.48/As quantum wire structure with the specific layer-ordering orientation on InP[001]","authors":"J. Wu, B. Xu, H. Li, Q. W. Mo, Z. Wang, X. M. Zhao, D. Wu","doi":"10.1109/SIM.1998.785107","DOIUrl":"https://doi.org/10.1109/SIM.1998.785107","url":null,"abstract":"Quantum wires were formed in the 6-period InAs/In/sub 0.52/Al/sub 0.48/As structure on InP [001] grown by molecular beam epitaxy. The structure was characterized with transmission electron microscopy. It was found that the lateral periodic compositional modulation in the QWR array was in the [11~0] direction and layer-ordered along the specific orientation deviating [001] by about 30 degrees. This deviating angle is consistent with the calculation of the distribution of elastic distortion around quantum wires in the structure using the finite element technique.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132147230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Time-resolved laser spectroscopy of wide band gap semiconductors 宽频带隙半导体的时间分辨激光光谱学
F. H. Long, M. Pophristic, C. Tran, R. F. Kalicek, Z. Feng, Ian T. Ferguson
{"title":"Time-resolved laser spectroscopy of wide band gap semiconductors","authors":"F. H. Long, M. Pophristic, C. Tran, R. F. Kalicek, Z. Feng, Ian T. Ferguson","doi":"10.1109/SIM.1998.785121","DOIUrl":"https://doi.org/10.1109/SIM.1998.785121","url":null,"abstract":"We present time-resolved photoluminescence measurements of InGaN MQWs, films, LEDs and SiC.","PeriodicalId":253421,"journal":{"name":"Semiconducting and Insulating Materials 1998. Proceedings of the 10th Conference on Semiconducting and Insulating Materials (SIMC-X) (Cat. No.98CH36159)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121894772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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