{"title":"Ammonia (NH/sub 3/) plasma surface passivation of InP/InGaAs heterojunction bipolar transistors","authors":"Hong Wang, G. Ng, Hong Yang, K. Radhakrishnan","doi":"10.1109/ICIPRM.2001.929148","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929148","url":null,"abstract":"In this study, we report on the experimental results of ammonia (NH/sub 3/) plasma surface passivation of InP/InGaAs HBT's. The NH/sub 3/ plasma treatment is found to reduce the surface recombination and thus improve the current gain. The passivation mechanism is believed to be similar to that of H and N plasma treatment for GaAs HBT's.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127175564","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}
Y. Hsin, Chih-Hsien Lin, C. Fan, Shih-Tzung Su, M.H.T. Yang, J.C. Huang, K. Lin
{"title":"InGaP/GaAs DHBTs with composite collectors for power amplifiers","authors":"Y. Hsin, Chih-Hsien Lin, C. Fan, Shih-Tzung Su, M.H.T. Yang, J.C. Huang, K. Lin","doi":"10.1109/ICIPRM.2001.929094","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929094","url":null,"abstract":"InGaP/GaAs double heterojunction bipolar transistors (DHBTs) with composite collectors have been proposed, simulated and fabricated for power amplifier applications in wireless communication. The composite collector combines wide-bandgap (InGaP) and narrow-bandgap (GaAs) materials. InGaP provides a high breakdown field and thus can be employed to reduce collector thickness while maintaining breakdown voltage. GaAs provides high electron mobility and thus is able to be used to reduce on-resistance and transit time. Three InGaP/GaAs HBTs with different collector structures have been grown, fabricated and characterized. The Gummel plots from simulation and measurement for the proposed DHBT show negligible difference in current gains, which is due to the identical structures in base/emitter regions and effectively reduced conduction spike in the base-collector junction. Overall, this DHBT with displays improved performance in on-resistance and knee voltage.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127339058","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}
H. Lee, A. Mizobata, O. Maeda, K. Konishi, K. Asami, H. Asahi
{"title":"Gas source MBE growth of TlInGaAs layers on GaAs substrates","authors":"H. Lee, A. Mizobata, O. Maeda, K. Konishi, K. Asami, H. Asahi","doi":"10.1109/ICIPRM.2001.929129","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929129","url":null,"abstract":"New alloy semiconductor heterostructures TlInGaAsN/AlGaAs are proposed to fabricate 1.3-1.55 /spl mu/m wavelength laser diodes with temperature-stable threshold currents and temperature-stable lasing wavelengths. TlInGaAs/GaAs and InGaAs/GaAs double-hetero (DH) and multi-hetero (HD) structures were grown on GaAs substrates by gas source molecular-beam epitaxy (MBE). Incorporation of Tl into TlInGaAs was confirmed up to 9% with reflection high energy electron diffraction (RHEED) intensity oscillation. Red shift of the photoluminescence (PL) peak energy was also observed for TlInGaAs/GaAs DW and MH samples, which agrees with the incorporation of Tl.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130182918","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}
M. Sugawara, N. Hatori, Tomoyuki Akiyama, Y. Nakata
{"title":"Optical gain in InGaAs/GaAs self-assembled quantum dots and its effect on optical devices","authors":"M. Sugawara, N. Hatori, Tomoyuki Akiyama, Y. Nakata","doi":"10.1109/ICIPRM.2001.929132","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929132","url":null,"abstract":"This paper presents theoretical and experimental studies on the optical gain of self-assembled InGaAs/GaAs quantum dots: homogeneous broadening of single-dot optical gain and its effect on lasing spectra, the magnitude of gain as a function of current, ultrafast gain recovery, and a comprehensive theory. Based on the results, we developed an operation theory of traveling-type quantum-dot semiconductor optical amplifiers to demonstrate that they can process high-bit-rate multiple-wavelength optical signals over 40 Gbit/s under gain saturation. This promises diverse optical functional devices, which meet with the demand of next-generation broadband all-optical photonic networks.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132860434","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}
Y. Chou, D. Leung, J. Scarpulla, R. Lai, M. Barsky, R. Grundbacher, M. Nishimoto, P. Liu, D. Streit
{"title":"High reliability of 0.1 /spl mu/m InGaAs/InAlAs/InP HEMT MMICs on 3-inch InP substrates","authors":"Y. Chou, D. Leung, J. Scarpulla, R. Lai, M. Barsky, R. Grundbacher, M. Nishimoto, P. Liu, D. Streit","doi":"10.1109/ICIPRM.2001.929231","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929231","url":null,"abstract":"The high-reliability performance of K-band MMIC amplifiers fabricated with 0.1 /spl mu/m gate length InGaAs/InAlAs/InP HEMTs on 3-inch wafers using a high volume production process technology is reported. Operating at an accelerated life test condition of Vds=1.5 V and Ids=150 mA/mm, two-stage balanced amplifiers were life tested at two-temperatures (T/sub 1/=230/spl deg/C, and T/sub 2/=250/spl deg/C) in nitrogen ambient. The activation energy (Ea) is as high as 1.5 eV, achieving a projected median-time-to-failure (MTF)>1/spl times/10/sup 6/ hours at a 125/spl deg/C junction temperature. MTF was determined by 2T constant current stress using |/spl Delta/S21|>1.0 dB as the failure criteria. This is the first report of high reliability 0.1 /spl mu/m InGaAs/InAlAs/InP HEMT MMICs based on small-signal microwave characteristics. This result demonstrates a reliable InGaAs/InAlAs/InP HEMT production technology.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130258868","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}
A. Gopal, H. Yoshida, T. Akiyama, A. Neogi, T. Mozume, N. Georgiev, O. Wada
{"title":"Nonlinearity and response speed evaluation of intersubband transition in InGaAs/AlAsSb quantum well","authors":"A. Gopal, H. Yoshida, T. Akiyama, A. Neogi, T. Mozume, N. Georgiev, O. Wada","doi":"10.1109/ICIPRM.2001.929031","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929031","url":null,"abstract":"We report the first reliable estimate of the saturation intensity in InGaAs/AlAsSb quantum wells using the homogeneous linewidth estimated from a careful lineshape analysis of the absorption spectra recorded as a function of temperature and the pump-probe relaxation time (/spl tau//spl ap/2.1 psec) at room temperature. The estimated value of saturation intensity is 52/spl plusmn/5 MW cm/sup 2/ at an excitation wavelength of 1.92 /spl mu/m. We performed a direct saturation measurement to estimate the linear absorption coefficient (/spl alpha//sub 0/) and the 3rd order susceptibility (/spl chi//sup (3)/). We observed a giant /spl chi//sup (3)/ of about 8.2/spl times/10/sup -15/ m/sup 2//V/sup 2/. The linear absorption coefficient is evaluated to be 3370 cm/sup -1/. From these values we estimated the figure of merit to be 1.2/spl times/10/sup -8/ m/sup 3/ V/sup -2/s/sup -1/ in this material.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121398942","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}
{"title":"Understanding the degradation of InP/InGaAs heterojunction bipolar transistors induced by silicon nitride passivation","authors":"Hong Wang, G. Ng, Hong Yang, K. Radhakrishnan","doi":"10.1109/ICIPRM.2001.929105","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929105","url":null,"abstract":"The effect of SiN passivation on the electrical characteristics of InP/InGaAs HBT's has been investigated comprehensively. The major degradations of I-V characteristics identified in our InP/InGaAs HBT's are: (1) the decrease of current gain due to a significant increase in the forward base leakage current and (2) large increase of base-collector (B-C) and base-emitter (B-E) reverse leakage currents. We found that different physical origins should be attributed to these two degradation behaviors.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122985958","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}
V. Ryzhii, I. Khmyrova, V. Pipa, M. Ryzhii, V. Mitin, M. Willander
{"title":"Physical model and characteristics of quantum dot infrared photodetectors","authors":"V. Ryzhii, I. Khmyrova, V. Pipa, M. Ryzhii, V. Mitin, M. Willander","doi":"10.1109/ICIPRM.2001.929138","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929138","url":null,"abstract":"We develop a physical model for quantum dot infrared photodetectors (QDIPs). Using this model, we calculate the dark current and photocurrent in QDIPs as functions of the QDIP structural parameters and the applied voltage. The obtained results clarify some interesting features of the QDIP characteristics observed experimentally, in particular, a rather steep (exponential) rise of the dark current and photocurrent with increasing applied voltage and the occurrence of negative differential photoconductivity.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123037086","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}
Hong Yang, Hong Wang, G. Ng, Haiqun Zheng, K. Radhakrishnan
{"title":"Device performance and transport properties of high gain metamorphic InP/InGaAs heterojunction bipolar transistors at elevated temperature","authors":"Hong Yang, Hong Wang, G. Ng, Haiqun Zheng, K. Radhakrishnan","doi":"10.1109/ICIPRM.2001.929092","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929092","url":null,"abstract":"A detailed DC characterization of metamorphic InP/InGaAs/InP DHBT's in the temperature range of 300 K to 400 K was carried out and the carrier transport properties were investigated. Our experiments reveal that band-to-band recombination is the dominant mechanism for the base current indicating the good base material quality for the metamorphic HBT structures.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127563016","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}
Y. Kasai, Y. Yamamura, T. Inokuma, K. Iiyama, S. Takamiya
{"title":"Study of GaAs[001] surface with adsorbed oxygen","authors":"Y. Kasai, Y. Yamamura, T. Inokuma, K. Iiyama, S. Takamiya","doi":"10.1109/ICIPRM.2001.929122","DOIUrl":"https://doi.org/10.1109/ICIPRM.2001.929122","url":null,"abstract":"The authors have investigated the effect of pretreatment by pH-controlled chemicals on Schottky barrier heights of Ni/n-GaAs junctions. An X-ray photoelectron spectroscopy (XPS) analysis of the treated surface suggested that difference in surface oxygen densities is the cause of the different electrical characteristics. In order to comprehend it’s mechanism, electronic state of GaAs(001) surfaces with and without adsorbed oxygen atoms were studied ,using first-principle calculation and compared with experimental results of Ni/n-GaAs(OOl) Schottky junctions.","PeriodicalId":403484,"journal":{"name":"Conference Proceedings. 2001 International Conference on Indium Phosphide and Related Materials. 13th IPRM (Cat. No.01CH37198)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122532817","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}