W. Goes, M. Toledano-Luque, O. Baumgartner, M. Bina, F. Schanovsky, B. Kaczer, T. Grasser
{"title":"Understanding correlated drain and gate current fluctuations","authors":"W. Goes, M. Toledano-Luque, O. Baumgartner, M. Bina, F. Schanovsky, B. Kaczer, T. Grasser","doi":"10.1109/IPFA.2013.6599125","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599125","url":null,"abstract":"Recently, some experimental groups have observed the occurrence of correlated drain and gate current fluctuations, which indicate that both currents are influenced by the charge state of the same defect. Since the physical reason behind this phenomenon is unclear at the moment, we evaluated two different explanations: The first model assumes that direct tunneling of carriers is affected by the electrostatic field of the charged defect. Interestingly, this model inherently predicts the gate bias and temperature dependences observed in the experiments and is therefore quite promising at a first glance. In the second model, our multi-state defect model is employed to describe trap-assisted tunneling as a combination of two consecutive nonradiative multi-phonon transitions - namely hole capture from the substrate followed by hole emission into the poly-gate. The latter transition is found to be in the weak electron-phonon coupling regime, which requires the consideration of all band states instead of only the band edges. Our investigation shows that the electrostatic model must be discarded since it predicts only small changes in the gate current while the extended variant of the multi-state defect model delivers quite promising results.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114430175","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":"Characteristic analysis of total dose irradiation annealing effect in SOI NMOSFET","authors":"He Yujuan, Lu Hongwei, En Yunfei","doi":"10.1109/IPFA.2013.6599266","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599266","url":null,"abstract":"The effect of total-dose irradiation annealing on SIMOX SOI MOSFET with different bias and temperature was studied. It has been demonstrated that the annealing effect was more remarkable with ON bias than the others and more obvious in high temperature than room temperature.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116722866","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. Nowodzinski, V. Mandrillon, D. Bouchu, R. Franiatte, H. Boutry, D. Bloch, K. Rousseau, C. Lionel
{"title":"Failure analysis of a 2.5D stacking using μinsert technology","authors":"A. Nowodzinski, V. Mandrillon, D. Bouchu, R. Franiatte, H. Boutry, D. Bloch, K. Rousseau, C. Lionel","doi":"10.1109/IPFA.2013.6599194","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599194","url":null,"abstract":"Failure analyses on μinsert technology used for 2.5D stacking are carried out after 1000 hours of damp heat test on nickel, copper and gold-nickel μinserts. We show that nickel μinserts are prone to delamination when the force applied on the reported die during bonding process is not homogeneous or lower than an optimal value. After the test, one out of eight tested gold-nickel μinserts is subject to a failure induced by gold-aluminum intermetallic compound growth. These intermetallic compounds engender Kirkendall voids which cause a steady increase of a few tens of percents of the electrical resistance of the gold-nickel μinserts. Failures of copper μinserts are due to residues of the titanium used to protect the copper seed layer before the electroplating step. An improper assembly seems to be the cause of failure in each case and it is easily detectable after the bonding process by measuring the electrical resistance of μinserts.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121985252","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}
C. Richardson, G. Liechty, Clay Smith, Michael Karow
{"title":"Putting the die contour back - Methods in advanced sample preparation for 3D and flip-chip devices","authors":"C. Richardson, G. Liechty, Clay Smith, Michael Karow","doi":"10.1109/IPFA.2013.6599203","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599203","url":null,"abstract":"Utilizing existing sample preparation techniques and/or toolsets in the typical failure analysis lab is an effective way of reducing the bottlenecks on higher-demand contour milling machines. Methodologies for faster milling on contouring machines, and use of a through-silicon measurement tool (used for measuring remaining silicon thickness), will demonstrate how to achieve higher throughput in the lab while preserving or reintroducing the device bows/warps that were present at the start.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126074124","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}
Zhenwei Zhou, Xin Liu, Q. Shi, Yunfei En, Xiaohan Wang
{"title":"Failure rate calculation for NMOS devices under multiple failure mechanisms","authors":"Zhenwei Zhou, Xin Liu, Q. Shi, Yunfei En, Xiaohan Wang","doi":"10.1109/IPFA.2013.6599182","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599182","url":null,"abstract":"The failure rate for NMOS devices is modelled by sum-of-failure-rate, i.e., the one for HCI mechanism and the one for TDDB failure mechanism. The least squares method is used to estimate the unknown parameters in HCI failure rate model and TDDB failure rate model, respectively. The hypothesis tests show that the regression model for HCI (TDDB) has good fitness and high significance. These results are verified by a numerical example.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126789851","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}
J. Gaudestad, N. Gagliolo, V. Talanov, R. H. Yeh, C. B. Ma
{"title":"High resolution Magnetic Current Imaging for die level short localization","authors":"J. Gaudestad, N. Gagliolo, V. Talanov, R. H. Yeh, C. B. Ma","doi":"10.1109/IPFA.2013.6599179","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599179","url":null,"abstract":"Magnetic Field Imaging (MFI) technology is capable of localize shorts using Magnetic Current Imaging (MCI) technique with a very high spatial resolution [1]. In this paper we demonstrate that a Giant Magneto Resistance (GMR) sensor positioned in close proximity to the front side of a die sample enables MFI to achieve sub micron resolution.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128075430","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":"Charge pumping in floating-body SOI FinFETs","authors":"D. Fleetwood, E. Zhang","doi":"10.1109/IPFA.2013.6599158","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599158","url":null,"abstract":"We review recent work that shows that reliable estimates of process- and radiation-induced interface-trap density can be obtained for conventional floating-body SOI FinFETs without body contacts. A modified charge pumping technique provides estimates of interface-trap density without detailed analysis, adjustable fitting parameters, and/or device simulation for devices in which the gate length is less than ~100 nm and the fin width is less than ~70 nm. Charge pumping currents are approximately linear with frequency up to ~300 kHz for the devices and measurement conditions used in this study.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114242406","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":"Electrical properties of N-type CdS and P-type CdTe thin films in CdS/CdTe solar cells","authors":"Jingjin Wu, F. Ang, Cezhou Zhao, Jeremy Smith","doi":"10.1109/IPFA.2013.6599187","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599187","url":null,"abstract":"Cadmium Sulfide thin films have been deposited on cleaned glass substrates in vacuum at various deposition conditions. The Cadmium Telluride powder was coated on copper foil by three methods respectively. Then, the samples were sintered at high temperature in a furnace. The effects of the deposition conditions on the thin film properties were investigated by measuring electrical resistivity and conduction type. By investigating the electrical properties of the thin films, we find that the thin film transparency strongly depends on the Cadmium dopant concentration rather than the thickness. On the other hand, the CdTe/Cu sintered film shows a strong p-type property and has an extremely small resistivity. Pinholes and cracks of the thin films were also discussed.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"-3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117233123","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}
S. Liang, A. Guo, J. Ji, Jason Chen, J. Su, Juley Wang, Jeff Wu, Johnson Lin
{"title":"A study of latch-up mechanisms for adjacent pins on multiple power supply circuits","authors":"S. Liang, A. Guo, J. Ji, Jason Chen, J. Su, Juley Wang, Jeff Wu, Johnson Lin","doi":"10.1109/IPFA.2013.6599130","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599130","url":null,"abstract":"Traditional latch-up (VDD-to-VSS) in CMOS IC's is formed by the parasitic p-n-p-n structure between VDD and VSS. In modern technologies, although the guard rings and substrate/ well pickups could efficiently overcome the latch-up failure in CMOS ICs, the latch-up failure phenomenon is still existed in many special application circuits. With mixed signal design requirements, there are more than 2 kinds of devices that are deployed in one chip to implement the design with higher voltage system on the advanced technologies with lower voltage application in the mixed-voltage process. Therefore, these comprehensive process and design approaches could provide more flexibility for the chips to be connected with older system [1-2]. A latch-up phenomenon is reported here that the latch-up current path occurs between adjacent power pins of 65nm process, IO circuit is powered by different power supplies. In this product, IO circuitry is with 3.3V and core circuitry is with 1.2V power supply. Because there is no VDD-to-VDD latch-up rule, the 3.3V n-well to 1.2V n-well space was <; 10 um (note: without any guard rings in between). Latch-up immunity of I/O pins resulted from a higher substrate potential required on the base-emitter junction forward bias of LQpnp.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125524102","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":"ISTFA best paper: FemtoFarad/TeraOhm endpoint detection for microsurgery of integrated circuit devices","authors":"J. Colvin","doi":"10.1109/IPFA.2013.6599192","DOIUrl":"https://doi.org/10.1109/IPFA.2013.6599192","url":null,"abstract":"Interactive electrical endpoint detection when thinning conductive and capacitive materials opens the door to approaching a suspect site in an IC without relying on the traditional iterative approach. Controlled approach of embedded conductors in insulators (packages) as well as controlled die thinning with submicron control will be shown, allowing safe approach to the desired feature without overshoot.","PeriodicalId":301935,"journal":{"name":"Proceedings of the 20th IEEE International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126012793","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}