{"id":{"repo_id":"unt","oai_identifier":"info:ark/67531/metadc5114"},"canonical_url":"https://search.dev.ndltd.org/etd/unt/info:ark/67531/metadc5114","repository":{"repo_id":"unt","name":"University of North Texas","base_url":"https://digital.library.unt.edu/oai/"},"display":{"title":"Trapping of hydrogen in Hf-based high κ dielectric thin films for advanced CMOS applications.","abstract":"In recent years, advanced high κ gate dielectrics are under serious consideration to replace SiO2 and SiON in semiconductor industry. Hafnium-based dielectrics such as hafnium oxides, oxynitrides and Hf-based silicates/nitrided silicates are emerging as some of the most promising alternatives to SiO2/SiON gate dielectrics in complementary metal oxide semiconductor (CMOS) devices. Extensive efforts have been taken to understand the effects of hydrogen impurities in semiconductors and its behavior such as incorporation, diffusion, trapping and release with the aim of controlling and using it to optimize the performance of electronic device structures. In this dissertation, a systematic study of hydrogen trapping and the role of carbon impurities in various alternate gate dielectric candidates, HfO2/Si, HfxSi1-xO2/Si, HfON/Si and HfON(C)/Si is presented. It has been shown that processing of high κ dielectrics may lead to some crystallization issues. Rutherford backscattering spectroscopy (RBS) for measuring oxygen deficiencies, elastic recoil detection analysis (ERDA) for quantifying hydrogen and nuclear reaction analysis (NRA) for quantifying carbon, X-ray diffraction (XRD) for measuring degree of crystallinity and X-ray photoelectron spectroscopy (XPS) were used to characterize these thin dielectric materials. ERDA data are used to characterize the evolution of hydrogen during annealing in hydrogen ambient in combination with preprocessing in oxygen and nitrogen.","abstract_html":"In recent years, advanced high κ gate dielectrics are under serious consideration to replace SiO2 and SiON in semiconductor industry. Hafnium-based dielectrics such as hafnium oxides, oxynitrides and Hf-based silicates/nitrided silicates are emerging as some of the most promising alternatives to SiO2/SiON gate dielectrics in complementary metal oxide semiconductor (CMOS) devices. Extensive efforts have been taken to understand the effects of hydrogen impurities in semiconductors and its behavior such as incorporation, diffusion, trapping and release with the aim of controlling and using it to optimize the performance of electronic device structures. In this dissertation, a systematic study of hydrogen trapping and the role of carbon impurities in various alternate gate dielectric candidates, HfO2/Si, HfxSi1-xO2/Si, HfON/Si and HfON(C)/Si is presented. It has been shown that processing of high κ dielectrics may lead to some crystallization issues. Rutherford backscattering spectroscopy (RBS) for measuring oxygen deficiencies, elastic recoil detection analysis (ERDA) for quantifying hydrogen and nuclear reaction analysis (NRA) for quantifying carbon, X-ray diffraction (XRD) for measuring degree of crystallinity and X-ray photoelectron spectroscopy (XPS) were used to characterize these thin dielectric materials. ERDA data are used to characterize the evolution of hydrogen during annealing in hydrogen ambient in combination with preprocessing in oxygen and nitrogen.","abstract_has_math":false,"creators":["Ukirde, Vaishali"],"institution":"University of North Texas","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Bouanani, Mohamed El","Scharf, Thomas W.","Quevedos-Lopez, Manuel","Al-Shareef, Husam","Reidy, Richard"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2007,"date_issued":"2007-12","date_published":"2007-12","updated_at":"2026-07-24T05:35:09Z","subjects":["high κ dielectrics","gender dyad","crystallization","carbon impurities","hydrogen trapping","Thin films.","Dielectric films.","Hafnium.","Metal oxide semiconductors, Complementary -- Design and construction.","Hydrogen."],"languages":["English"],"rights":["Public","Copyright","Ukirde, Vaishali","Copyright is held by the author, unless otherwise noted. All rights reserved."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oclc: 231334498","https://digital.library.unt.edu/ark:/67531/metadc5114/","ark: ark:/67531/metadc5114"],"render_values":[{"text":"oclc: 231334498","href":null,"code":true},{"text":"https://digital.library.unt.edu/ark:/67531/metadc5114/","href":"https://digital.library.unt.edu/ark:/67531/metadc5114/","code":true},{"text":"ark: ark:/67531/metadc5114","href":null,"code":true}]}]},"links":{"outbound_url":"https://doi.org/10.12794/metadc5114","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Bouanani, Mohamed El","Scharf, Thomas W.","Quevedos-Lopez, Manuel","Al-Shareef, Husam","Reidy, Richard"]},{"key":"dc:creator","label":"Author","values":["Ukirde, Vaishali"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2007-12"]},{"key":"dc:publisher","label":"Institution","values":["University of North Texas"]},{"key":"dc:type","label":"Dc Type","values":["Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["high κ dielectrics","gender dyad","crystallization","carbon impurities","hydrogen trapping","Thin films.","Dielectric films.","Hafnium.","Metal oxide semiconductors, Complementary -- Design and construction.","Hydrogen."]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["Public","Copyright","Ukirde, Vaishali","Copyright is held by the author, unless otherwise noted. 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Extensive efforts have been taken to understand the effects of hydrogen impurities in semiconductors and its behavior such as incorporation, diffusion, trapping and release with the aim of controlling and using it to optimize the performance of electronic device structures. In this dissertation, a systematic study of hydrogen trapping and the role of carbon impurities in various alternate gate dielectric candidates, HfO2/Si, HfxSi1-xO2/Si, HfON/Si and HfON(C)/Si is presented. It has been shown that processing of high κ dielectrics may lead to some crystallization issues. Rutherford backscattering spectroscopy (RBS) for measuring oxygen deficiencies, elastic recoil detection analysis (ERDA) for quantifying hydrogen and nuclear reaction analysis (NRA) for quantifying carbon, X-ray diffraction (XRD) for measuring degree of crystallinity and X-ray photoelectron spectroscopy (XPS) were used to characterize these thin dielectric materials. ERDA data are used to characterize the evolution of hydrogen during annealing in hydrogen ambient in combination with preprocessing in oxygen and nitrogen."]},{"key":"dc:format","label":"Dc Format","values":["Text"]},{"key":"dc:title","label":"Title","values":["Trapping of hydrogen in Hf-based high κ dielectric thin films for advanced CMOS applications."]}]}],"canonical_facts":{"dc:contributor":["Bouanani, Mohamed El","Scharf, Thomas W.","Quevedos-Lopez, Manuel","Al-Shareef, Husam","Reidy, Richard"],"dc:creator":["Ukirde, Vaishali"],"dc:date":["2007-12"],"dc:description":["In recent years, advanced high κ gate dielectrics are under serious consideration to replace SiO2 and SiON in semiconductor industry. Hafnium-based dielectrics such as hafnium oxides, oxynitrides and Hf-based silicates/nitrided silicates are emerging as some of the most promising alternatives to SiO2/SiON gate dielectrics in complementary metal oxide semiconductor (CMOS) devices. Extensive efforts have been taken to understand the effects of hydrogen impurities in semiconductors and its behavior such as incorporation, diffusion, trapping and release with the aim of controlling and using it to optimize the performance of electronic device structures. In this dissertation, a systematic study of hydrogen trapping and the role of carbon impurities in various alternate gate dielectric candidates, HfO2/Si, HfxSi1-xO2/Si, HfON/Si and HfON(C)/Si is presented. It has been shown that processing of high κ dielectrics may lead to some crystallization issues. Rutherford backscattering spectroscopy (RBS) for measuring oxygen deficiencies, elastic recoil detection analysis (ERDA) for quantifying hydrogen and nuclear reaction analysis (NRA) for quantifying carbon, X-ray diffraction (XRD) for measuring degree of crystallinity and X-ray photoelectron spectroscopy (XPS) were used to characterize these thin dielectric materials. ERDA data are used to characterize the evolution of hydrogen during annealing in hydrogen ambient in combination with preprocessing in oxygen and nitrogen."],"dc:format":["Text"],"dc:identifier":["oclc: 231334498","doi: 10.12794/metadc5114","https://digital.library.unt.edu/ark:/67531/metadc5114/","ark: ark:/67531/metadc5114"],"dc:language":["English"],"dc:publisher":["University of North Texas"],"dc:rights":["Public","Copyright","Ukirde, Vaishali","Copyright is held by the author, unless otherwise noted. All rights reserved."],"dc:subject":["high κ dielectrics","gender dyad","crystallization","carbon impurities","hydrogen trapping","Thin films.","Dielectric films.","Hafnium.","Metal oxide semiconductors, Complementary -- Design and construction.","Hydrogen."],"dc:title":["Trapping of hydrogen in Hf-based high κ dielectric thin films for advanced CMOS applications."],"dc:type":["Thesis or Dissertation"]},"updated_at":"2026-07-24T05:35:09Z"}