{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/77418"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/77418","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Topics in the Theory of Semiconductors: I. Novel Semiconductors. II. Uniaxial Stress Dependence of Deep Impurities","abstract":"The thesis is divided into four self-contained chapters. Chapters 1, 2 and 3 deal with the electronic energy band structures of novel semiconductors and chapter 4 deals with the uniaxial stress dependence of deep substitutional impurity levels in semiconductors.","abstract_html":"The thesis is divided into four self-contained chapters. Chapters 1, 2 and 3 deal with the electronic energy band structures of novel semiconductors and chapter 4 deals with the uniaxial stress dependence of deep substitutional impurity levels in semiconductors.","abstract_has_math":false,"creators":["Jenkins, David William"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-05-13T15:42:01Z","date_published":"2015-05-13T15:42:01Z","updated_at":"2026-07-22T22:26:10Z","subjects":["Physics, Electricity and Magnetism","Physics, Condensed Matter","Physics, Optics"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8815362"],"render_values":[{"text":"(UMI)AAI8815362","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/77418","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Jenkins, David William"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-05-13T15:42:01Z","10000-01-01","1988"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics, Electricity and Magnetism","Physics, Condensed Matter","Physics, Optics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/77418","(UMI)AAI8815362"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The thesis is divided into four self-contained chapters. Chapters 1, 2 and 3 deal with the electronic energy band structures of novel semiconductors and chapter 4 deals with the uniaxial stress dependence of deep substitutional impurity levels in semiconductors.","Chapter 1: The electronic energy band structure and deep substitutional impurity levels for metastable Ge$\\sb{1-\\rm x}$Sn$\\sb{\\rm x}$ are predicted with a nearest-neighbor, tight-binding model. Ge$\\sb{1-\\rm x}$Sn$\\sb{\\rm x}$ is a semiconductor-metal alloy which may have applications in infrared detection or as a Gunn device. Doping anomalies are found: deep impurity levels in the band gap of Ge necessarily make deep-to-shallow transitions as the Sn concentration increases and some impurities have false valences.","Chapter 2: The electronic energy band structure and deep substitutional impurity levels for InN and the alloys In$\\sb{1-\\rm x}$Ga$\\sb{\\rm x}$N and In$\\sb{1-\\rm x}$A$\\ell\\sb{\\rm x}$N are predicted with a nearest-neighbor, tight-binding model. These wurtzite alloys have direct fundamental energy band gaps ranging in the optical spectrum from orange visible light through ultraviolet. Dopants are suggested for possible application of these materials as light-emitting diodes and solid-state lasers.","Chapter 3: Energy band gaps for the (A$\\sp{\\rm III}$B$\\sp{\\rm V})\\sb{1-\\rm x}$ (X$\\sp{\\rm IV})\\sb{2\\rm x}$ metastable, substitutional, crystalline alloys are predicted. These materials undergo a zincblende-to-diamond, order-disorder, structural phase transition as a function of composition x. The alloys exhibit V-shaped bowing in the energy band gap as a function of composition and a general lowering of the band gap: both effects are due to the phase transition.","Chapter 4: The uniaxial stress dependence of energy levels of deep substitutional impurities in zincblende III-V and diamond Group-IV semiconductors for applied stress in the (100), (110), and (111) crystallographic directions are predicted. Stress applied in the (110) direction, in particular, causes shifts and splittings of the deep levels associated with an impurity to (i) uniquely determine the symmetry of the levels (s-like or p-like) and (ii) identify the site (anion or cation) of the associated impurity.","Made available in DSpace on 2015-05-13T15:42:01Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8815362.PDF: 5188630 bytes, checksum: 980a6f66281eb33e5e63a4b31408ff94 (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 78629 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","223 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."]},{"key":"dc:title","label":"Title","values":["Topics in the Theory of Semiconductors: I. Novel Semiconductors. II. Uniaxial Stress Dependence of Deep Impurities"]}]}],"canonical_facts":{"dc:creator":["Jenkins, David William"],"dc:date":["2015-05-13T15:42:01Z","10000-01-01","1988"],"dc:description":["The thesis is divided into four self-contained chapters. Chapters 1, 2 and 3 deal with the electronic energy band structures of novel semiconductors and chapter 4 deals with the uniaxial stress dependence of deep substitutional impurity levels in semiconductors.","Chapter 1: The electronic energy band structure and deep substitutional impurity levels for metastable Ge$\\sb{1-\\rm x}$Sn$\\sb{\\rm x}$ are predicted with a nearest-neighbor, tight-binding model. Ge$\\sb{1-\\rm x}$Sn$\\sb{\\rm x}$ is a semiconductor-metal alloy which may have applications in infrared detection or as a Gunn device. Doping anomalies are found: deep impurity levels in the band gap of Ge necessarily make deep-to-shallow transitions as the Sn concentration increases and some impurities have false valences.","Chapter 2: The electronic energy band structure and deep substitutional impurity levels for InN and the alloys In$\\sb{1-\\rm x}$Ga$\\sb{\\rm x}$N and In$\\sb{1-\\rm x}$A$\\ell\\sb{\\rm x}$N are predicted with a nearest-neighbor, tight-binding model. These wurtzite alloys have direct fundamental energy band gaps ranging in the optical spectrum from orange visible light through ultraviolet. Dopants are suggested for possible application of these materials as light-emitting diodes and solid-state lasers.","Chapter 3: Energy band gaps for the (A$\\sp{\\rm III}$B$\\sp{\\rm V})\\sb{1-\\rm x}$ (X$\\sp{\\rm IV})\\sb{2\\rm x}$ metastable, substitutional, crystalline alloys are predicted. These materials undergo a zincblende-to-diamond, order-disorder, structural phase transition as a function of composition x. The alloys exhibit V-shaped bowing in the energy band gap as a function of composition and a general lowering of the band gap: both effects are due to the phase transition.","Chapter 4: The uniaxial stress dependence of energy levels of deep substitutional impurities in zincblende III-V and diamond Group-IV semiconductors for applied stress in the (100), (110), and (111) crystallographic directions are predicted. Stress applied in the (110) direction, in particular, causes shifts and splittings of the deep levels associated with an impurity to (i) uniquely determine the symmetry of the levels (s-like or p-like) and (ii) identify the site (anion or cation) of the associated impurity.","Made available in DSpace on 2015-05-13T15:42:01Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8815362.PDF: 5188630 bytes, checksum: 980a6f66281eb33e5e63a4b31408ff94 (MD5) Previous issue date: 1988","Embargo set by: Seth Robbins for item 78629 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","223 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988."],"dc:identifier":["http://hdl.handle.net/2142/77418","(UMI)AAI8815362"],"dc:language":["eng"],"dc:subject":["Physics, Electricity and Magnetism","Physics, Condensed Matter","Physics, Optics"],"dc:title":["Topics in the Theory of Semiconductors: I. Novel Semiconductors. II. Uniaxial Stress Dependence of Deep Impurities"],"dc:type":["text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:10Z"}