{"title":"A new approach to mesh generation for complex 3D semiconductor device structures","authors":"K. Tanaka, A. Notsu, H. Matsumoto","doi":"10.1109/SISPAD.1996.865322","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865322","url":null,"abstract":"A new approach to mesh generation for general 3D domain is proposed. A prototype mesh generator which utilizes octree for easy manipulation of 3D structures, is developed. It shows that \"well-fitted\" tetrahedral mesh can be constructed assuming that an appropriate triangular mesh upon the boundary is given. There is a good chance that adaptive meshing and moving boundary will be managed well in this mesh generation method.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125642030","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":"Application of LE-FDTD method to HF circuit analysis","authors":"P. Ciampolini, L. Roselli, S. Catena","doi":"10.1109/SISPAD.1996.865270","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865270","url":null,"abstract":"A circuit simulation technique is discussed, which accounts for the \"full-wave\" analysis of signal propagation along the interconnections of an arbitrary circuit, including active, non-linear devices. A number of electromagnetic propagation effects have significant influence over high-frequency (either analog or digital) circuit performances and can be accurately modeled by means of the approach described: among them, interconnection behavior, cross-talk phenomena, package interactions. Conventional circuit CAD tools allow the analysis of such effects by resorting to equivalent-circuit, lumped-element descriptions of interconnecting lines. Although this technique is highly computationally efficient, the definition of the equivalent circuit topology and the estimation of its parameters often relies on rather drastic approximations, because of the inherently \"distributed\" nature of most propagation effects. To tackle this problem, the Lumped-Element, Finite-Difference Time-Domain (LE-FDTD) technique has been conceived. Within this approach, SPICE-like compact device models are coupled to the numerical solutions of Maxwell's equation over distributed domains. The extension of LE-FDTD technique to circuits including GaAs MESFET devices is reported, and a few simulation examples are illustrated.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128182993","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":"Modeling tunneling through ultra-thin gate oxides","authors":"A. Schenk","doi":"10.1109/SISPAD.1996.865248","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865248","url":null,"abstract":"For the purpose of MOS device simulation both the numerical solution of the Schrodinger equation and the WKB approximation, which includes the numerical action integral, are too time-consuming, since the outer numerical integration is unavoidable to obtain the current. An analytical function /spl tau/(E) is desirable that takes into account the image force in a better way than by the lowering of a trapezoidal barrier. Based on the observation that the tunnel probability is mainly determined by the action of the barrier, we propose a \"pseudobarrier\" method.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"237 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114041658","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":"Phosphorus pile-up model for SiO/sub 2/-Si interface of p-channel MOSFETs","authors":"M. Akazawa, T. Aoki, S. Tazawa, Y. Sato","doi":"10.1109/SISPAD.1996.865258","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865258","url":null,"abstract":"Dopant distribution is very important when simulating the performance of LSI devices. Therefore dopant segregation should be taken into account when it occurs to the extent that it affects this distribution. This paper suggests that for p-channel MOSFETs the \"phosphorus pile-up phenomenon\" should be taken into account and proposes a simulation model.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121725860","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":"Energy transport modeling of graded AlGaAs/GaAs HBTs: importance of giving adequate transport parameters","authors":"K. Okada, A. Nakatani, K. Horio","doi":"10.1109/SISPAD.1996.865269","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865269","url":null,"abstract":"AlGaAs/GaAs HBTs have received great interest for applications to high-speed and high-frequency devices and ICs. Since nonequilibrium carrier transport becomes important in the HBTs, carrier energy must be considered in the modeling of them. For this purpose, an energy transport model that uses hydrodynamic equations derived from the Boltzmann equation is attractive and has been applied to AlGaAs/GaAs HBTs. In the HBTs, material parameters should depend on material composition as well as carrier energy and the doping densities. However, up to now, methods of giving parameters in the transport equations were too crude. A constant value of energy relaxation time was assumed and parameters for GaAs at a certain doping density were also assumed for all x in Al/sub x/Ga/sub 1-x/As. In this work, a method of giving composition-, doping-, and energy-dependent transport parameters is proposed, and successfully applied to the simulation of AlGaAs/GaAs HBTs.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130460851","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":"Two-dimensional simulation of surface-state effects on slow current transients in GaAs MESFETs","authors":"T. Yamada, K. Horio","doi":"10.1109/SISPAD.1996.865306","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865306","url":null,"abstract":"We have clarified the role of deep-acceptor-like surface states in slow current transients in GaAs MESFET's. To reduce them, the deep acceptor should be made electron-trap-like. This can be realized by reducing the surface state density.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129599887","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":"Theory and implementation of a new interpolation method based on random sampling","authors":"W. Schoenmaker, R. Cartuyvels","doi":"10.1109/SISPAD.1996.865319","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865319","url":null,"abstract":"A new interpolation technique is presented. The method avoids all bias concerning presupposed analytic functions. The method has been implemented into a TCAD framework by developing a Metropolis algorithm in an an arbitrary number of dimensions. It is in particular very suitable for design problems where nonlinear dependences are dominant and hints for appropriate factor or response transformations are lacking.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122857106","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":"A numerical model for simulating MOSFET gate current degradation by considering the interface state generation","authors":"C. Yih, S.S. Chung, C. Hsu","doi":"10.1109/SISPAD.1996.865301","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865301","url":null,"abstract":"In this paper, a new gate current degradation model for n-MOSFET's by considering the interface state generation is proposed. This interface state has been characterized using a new approach and incorporated into a 2D device simulation for predicting the device gate current characteristics due to a hot carrier stress induced effect. Good agreement of the gate current has been achieved as compared with the measurement data for both fresh and stressed devices. This model is not only useful for predicting the gate current degradation, but also as a superior monitor to substrate current for submicron device reliability issues, in particular EPROM or flash EPROM devices.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133651873","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":"Fundamental relation between local and effective transverse field dependent mobility for electrons in inversion channels","authors":"S. Biesemans, K. De Meyer","doi":"10.1109/SISPAD.1996.865295","DOIUrl":"https://doi.org/10.1109/SISPAD.1996.865295","url":null,"abstract":"This paper describes a new modeling approach that relates the local mobility to the experimentally determined macroscopic or effective mobility as a function of the vertical electric field. Using the technique of integral representations it is possible to find a mathematical condition which any local mobility model has to fulfil to be in accordance with experiment. A local mobility model used in a 2D device simulator has to meet this requirement in order to achieve quantitative agreement between experimental and simulated data.","PeriodicalId":341161,"journal":{"name":"1996 International Conference on Simulation of Semiconductor Processes and Devices. SISPAD '96 (IEEE Cat. No.96TH8095)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114764080","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}