{"id":6348,"date":"2022-12-03T11:06:43","date_gmt":"2022-12-03T03:06:43","guid":{"rendered":"https:\/\/www.hh-ri.com\/?p=6348"},"modified":"2023-02-14T11:10:45","modified_gmt":"2023-02-14T03:10:45","slug":"buffer-traps-effect-on-gan-on-si-high-electron-mobility-transistor-at-different-substrate-voltages","status":"publish","type":"post","link":"https:\/\/www.hh-ri.com\/2022\/12\/03\/buffer-traps-effect-on-gan-on-si-high-electron-mobility-transistor-at-different-substrate-voltages\/","title":{"rendered":"Buffer Traps Effect on GaN-on-Si High-Electron-Mobility Transistor at Different Substrate Voltages"},"content":{"rendered":"\n<p>Yuan Lin, Min-Lu Kao, You-Chen Weng, Chang-Fu Dee, Shih-Chen Chen, Hao-Chung Kuo, Chun-Hsiung Lin and Edward-Yi Chang<\/p>\n\n\n\n<p><em><a href=\"https:\/\/www.mdpi.com\/2072-666X\/13\/12\/2140\"><strong><em><em>Micromachines<\/em><\/em><\/strong>,\u00a0<em>13<\/em>(12), 2140(2022) &#8212; Published in December 2022<\/a><\/em><\/p>\n\n\n\n<p><strong>ABSTRACT<\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Substrate voltage (V<sub>SUB<\/sub>) effects on GaN-on-Si high electron mobility transistors (HEMTs) power application performance with superlattice transition layer structure was investigated. The 2DEG conductivity and buffer stack charge redistribution can be affected by neutral\/ionized donor and acceptor traps. As the donor\/acceptor traps are excessively ionized or de-ionized by applying V<sub>SUB<\/sub>, the depletion region between the unintentionally doped (UID)\/Carbon-doped (C-doped) GaN layer may exhibit a behavior similar to the p\u2013n junction. An applied negative V<sub>SUB<\/sub>\u00a0increases the concentration of both the ionized donor and acceptor traps, which increases the breakdown voltage (BV) by alleviating the non-uniform distribution of the vertical electric field. On the other hand, an applied positive V<sub>SUB<\/sub>\u00a0causes the energy band bending flattener to refill the ionized traps and slightly improves the dynamic R<sub>on<\/sub>\u00a0degradation. Moreover, the amount of electrons injected into the buffer stack layer from the front side (2DEG channel\/Ohmic contact) and the back side (AlN nucleation layer\/superlattice transition layer) are asymmetric. Therefore, different V<sub>SUB<\/sub>\u00a0can affect the conductivity of 2DEG through the field effect, buffer trapping effect, and charge redistribution, which can change the electrical performance of the device.<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Yuan Lin, Min-Lu Kao, You-Chen Weng, Chang-Fu Dee, Shih [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":6352,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[5],"tags":[44],"_links":{"self":[{"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/posts\/6348"}],"collection":[{"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/comments?post=6348"}],"version-history":[{"count":0,"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/posts\/6348\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/media\/6352"}],"wp:attachment":[{"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/media?parent=6348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/categories?post=6348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hh-ri.com\/wp-json\/wp\/v2\/tags?post=6348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}