Z. Tokei, P. Roussel, M. Stucchi, J. Versluijs, I. Ciofi, L. Carbonell, G. Beyer, A. Cockburn, M. Agustin, K. Shah
{"title":"Impact of LER on BEOL dielectric reliability: A quantitative model and experimental validation","authors":"Z. Tokei, P. Roussel, M. Stucchi, J. Versluijs, I. Ciofi, L. Carbonell, G. Beyer, A. Cockburn, M. Agustin, K. Shah","doi":"10.1109/IITC.2009.5090395","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090395","url":null,"abstract":"For the first time we provide a model for describing the LER induced BEOL TDDB lifetime reduction. The model was validated on 50nm ½ pitch copper damascene lines embedded into a k=2.5 low-k material.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124121330","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. Shapiro, M. Interrante, P. Andry, B. Dang, C. Tsang, R. Liptak, J. Griffith, E. Sprogis, L. Guerin, V. Truong, D. Berger, J. Knickerbocker
{"title":"Reliable through silicon vias for 3D silicon applications","authors":"M. Shapiro, M. Interrante, P. Andry, B. Dang, C. Tsang, R. Liptak, J. Griffith, E. Sprogis, L. Guerin, V. Truong, D. Berger, J. Knickerbocker","doi":"10.1109/IITC.2009.5090341","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090341","url":null,"abstract":"The use of through silicon vias (TSVs) is required to implement 3D chip stacking technology. This work explores a method to fabricate highly reliable TSVs that is compatible with CMOS processing. The key feature of the TSVs is a redundant tungsten bar with a high temperature thermal oxide insulating liner. Care must be taken when exposing the TSVs from the back side so that material is not left on the surface that can cause a leakage path to the silicon wafer. TSVs were produced with that had no fails through standard JDEC testing.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124645347","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}
Hsiu-Ping Wei, H. Tsai, Yu-Wen Liu, Hsien-Wei Chen, S. Jeng, Douglas C. H. Yu
{"title":"Chip-packaging interaction in Cu/very low-k interconnect","authors":"Hsiu-Ping Wei, H. Tsai, Yu-Wen Liu, Hsien-Wei Chen, S. Jeng, Douglas C. H. Yu","doi":"10.1109/IITC.2009.5090366","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090366","url":null,"abstract":"Chip-Package interaction (CPI) has drawn much attention for very low-k (VLK) packaging technology development, especially as the electronic industry is moving from SnPb solder to lead-free solder. In this study, a multi-level finite element model is used to optimize the interconnect scheme from a packaging reliability point of view. Factors including top metal (or SiO2) thickness, passivation dielectric layers, and bump pad structure are found to play key roles in packaging process and reliability.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122852845","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":"Interconnection with copper pillar bumps : Process and applications","authors":"C. Lee","doi":"10.1109/IITC.2009.5090391","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090391","url":null,"abstract":"Flipchip technologies have been evolved to grab the major portion of the high and medium performance markets, where the bump interconnections are required. Bumps can be diverse in their contents, that is, binary, ternary, etc.. The most popular alloy is SnPb (eutectic), while the environmental importance pushes the market to adapt the green solution where SnAg or SnCu can be one of the choice. Considering the electrical performance including electro-migration effect and simplicity of the process, Cu bumps is chosen to be an alternative. In this presentation, the Cu pillar bump will be introduced embracing the fine pitch (less than 50 um) process and applications.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"318 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122151768","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. Chibahara, H. Korogi, Y. Ono, T. Saito, K. Yoshikawa, K. Yonekura, T. Furuhashi, K. Tomita, H. Sakaue, A. Ueki, S. Matsumoto, Moriaki Akazawa, H. Miyatake
{"title":"Resist planarization for trench first dual damascene","authors":"H. Chibahara, H. Korogi, Y. Ono, T. Saito, K. Yoshikawa, K. Yonekura, T. Furuhashi, K. Tomita, H. Sakaue, A. Ueki, S. Matsumoto, Moriaki Akazawa, H. Miyatake","doi":"10.1109/IITC.2009.5090351","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090351","url":null,"abstract":"Resist planarization is applied to trench first dual damascene process in order to enhance focus margin for via lithography after hard mask etch. As a planarization process, resist CMP is better than conventional resist etch back, However, hard mask (HM) erosion by resist CMP causes serious problem of lessened thickness of Cu. To solve it, the combination of CMP and etch back (C+E) is adopted. This method realizes enhancement of the focus margin and prevention from the hard mask erosion at the same time.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130219946","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}
L. Arnaud, D. Galpin, S. Chhun, C. Monget, E. Richard, D. Roy, C. Besset, M. Vilmay, L. Doyen, P. Waltz, E. Petitprez, F. Terrier, G. Imbert, Y. Le Friec
{"title":"Reliability failure modes in interconnects for the 45 nm technology node and beyond","authors":"L. Arnaud, D. Galpin, S. Chhun, C. Monget, E. Richard, D. Roy, C. Besset, M. Vilmay, L. Doyen, P. Waltz, E. Petitprez, F. Terrier, G. Imbert, Y. Le Friec","doi":"10.1109/IITC.2009.5090381","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090381","url":null,"abstract":"This work analyses electromigration and dielectric lifetimes of 45 nm node CMOS interconnects. Reliability mechanisms and failure modes are discussed considering, on one hand, the interconnect materials and processes steps, and on the other hand scaling issues. Robust reliability performance meeting the required products target is actually obtained with process integration schemes used for the 45 nm node thanks to fine optimizations of Cu barriers, Cu filling, and ULK surface quality.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123751126","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}
Tsutomu Saito, H. Yabutani, Toshishige Yamada, P. Wilhite, Cary Y. Yang
{"title":"Electrode and substrate contacts in carbon nanofiber interconnects","authors":"Tsutomu Saito, H. Yabutani, Toshishige Yamada, P. Wilhite, Cary Y. Yang","doi":"10.1109/IITC.2009.5090360","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090360","url":null,"abstract":"To study the reliability of carbon nanofiber (CNF) interconnect under high-current stress, electrical and thermal transports across CNF-electrode interfaces and between electrodes are considered. For this investigation, three different types of contacts are examined: (a) CNF-Au electrode, (b) CNF-SiO2 substrate, and (c) tungsten-deposited CNF-Au electrode. We have determined that contact (c) improves the overall electrical and thermal transport characteristics of the system.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124657203","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. Korogi, H. Chibahara, Shigeru Suzuki, M. Tsutsue, K. Seo, Y. Oka, K. Goto, Moriaki Akazawa, H. Miyatake, S. Matsumoto, T. Ueda
{"title":"Advanced Direct-CMP process for porous low-k thin film","authors":"H. Korogi, H. Chibahara, Shigeru Suzuki, M. Tsutsue, K. Seo, Y. Oka, K. Goto, Moriaki Akazawa, H. Miyatake, S. Matsumoto, T. Ueda","doi":"10.1109/IITC.2009.5090399","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090399","url":null,"abstract":"In order to reduce the effective dielectric constant (keff) for the 32 nm technology node and beyond, Direct-CMP of a porous low-k film without a protective cap layer is required. However, the degradation of breakdown electric field (Ebd) has been one of critical issues. This study clarified that the Ebd degradation was caused by the pit defects on the surface of porous low-k film during Direct-CMP. In order to suppress the pit defects, we evaluated dependency of micro-pores density of CMP pads. As a result, we demonstrated that CMP pads with low-density micro-pores drastically reduced them and improved the Ebd degradation. In this paper, the mechanism for their reduction is also discussed.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129179627","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}
L. Carbonell, H. Volders, N. Heylen, K. Kellens, R. Caluwaerts, K. Devriendt, E. Sanchez, J. Wouters, V. Gravey, K. Shah, Qian Luo, A. Sundarrajan, J. Lu, J. Aubuchon, P. Ma, M. Narasimhan, A. Cockburn, Z. Tokei, G. Beyer
{"title":"Metallization of sub-30 nm interconnects: Comparison of different liner/seed combinations","authors":"L. Carbonell, H. Volders, N. Heylen, K. Kellens, R. Caluwaerts, K. Devriendt, E. Sanchez, J. Wouters, V. Gravey, K. Shah, Qian Luo, A. Sundarrajan, J. Lu, J. Aubuchon, P. Ma, M. Narasimhan, A. Cockburn, Z. Tokei, G. Beyer","doi":"10.1109/IITC.2009.5090387","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090387","url":null,"abstract":"Narrow trenches with Critical Dimensions down to 17 nm were patterned in oxide using a sacrificial FIN approach and used to evaluate the scalability of TaN/Ta, RuTa, TaN + Co and MnOx metallization schemes. So far, the RuTa metallization scheme has proved to be the most promising candidate to achieve a successful metallization of 25 nm interconnects, providing high electrical yields and a good compatibility with the slurries used during CMP.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126677470","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. Katagiri, Y. Yamazaki, N. Sakuma, Mariko Suzuki, T. Sakai, M. Wada, N. Nakamura, N. Matsunaga, Shintaro Sato, M. Nihei, Y. Awano
{"title":"Fabrication of 70-nm-diameter carbon nanotube via interconnects by remote plasma-enhanced chemical vapor deposition and their electrical properties","authors":"M. Katagiri, Y. Yamazaki, N. Sakuma, Mariko Suzuki, T. Sakai, M. Wada, N. Nakamura, N. Matsunaga, Shintaro Sato, M. Nihei, Y. Awano","doi":"10.1109/IITC.2009.5090336","DOIUrl":"https://doi.org/10.1109/IITC.2009.5090336","url":null,"abstract":"We have succeeded in fabricating ultrafine carbon nanotube (CNT) via interconnects with SiOC interlayer dielectrics. High-quality multiwalled CNTs are grown in via holes with a diameter of 70 nm using pulse-exited remote plasma-enhanced chemical vapor deposition at 450 °C. The resistance of a 70-nm-diameter CNT via is 52 Ω, which is the lowest ever reported for CNT via interconnects. The CNT via interconnect has the capability to sustain current density as high as 1×108 A/cm2.","PeriodicalId":301012,"journal":{"name":"2009 IEEE International Interconnect Technology Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115082792","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}