{"id":36957,"date":"1999-08-04T18:08:08","date_gmt":"1999-08-04T18:08:08","guid":{"rendered":"https:\/\/silvaco.com\/%e6%9c%aa%e5%88%86%e7%b1%bb\/hints-tips-august-1999\/"},"modified":"2021-10-13T10:53:20","modified_gmt":"2021-10-13T17:53:20","slug":"hints-tips-august-1999","status":"publish","type":"post","link":"https:\/\/silvaco.com\/zh-hans\/simulation-standard-zh-hans\/hints-tips-august-1999\/","title":{"rendered":"Hints &#038; Tips August 1999"},"content":{"rendered":"<div id='template_overview'  class='avia-section main_color avia-section-small avia-no-border-styling  avia-bg-style-scroll  avia-builder-el-0  el_before_av_section  avia-builder-el-first   container_wrap fullsize' style='background-color: #ffffff;  margin-top:0px; margin-bottom:0px; '  ><div class='container' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-36957'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-equal-height-column-flextable -flextable' style='margin-top:20px; margin-bottom:0px; '><div class=\"flex_column av_three_fourth  flex_column_table_cell av-equal-height-column av-align-top first  avia-builder-el-1  el_before_av_one_fourth  avia-builder-el-first  \" style='padding:0px 0px 0px 0px ; border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h1>Hints, Tips and Solutions<\/h1>\n<p><b>Q:<\/b>\u00a0How is temperature dependent breakdown voltage modeled in\u00a0<i>ATLAS<\/i>?<\/p>\n<p><b>A:<\/b>\u00a0Modeling of the increase in breakdown voltage at elevated temperatures requires a model to describe the temperature dependence of the impact ionization coefficients. In\u00a0<i><b>ATLAS,<\/b><\/i>\u00a0there are two impact ionization models that include lattice temperature dependence. They are the Crowell-Sze model[1] called using the command<span style=\"font-family: Courier New, Courier, mono;\">\u00a0IMPACT CROWELL<\/span>\u00a0and the Selberrherr Model[2] called using the command<span style=\"font-family: Courier New, Courier, mono;\">\u00a0IMPACT SELB<\/span>.<\/p>\n<p>Users do not need to explicitly turn on any temperature dependent model. The impact ionization coefficients are always calculated based on the local lattice temperature. The temperature dependence is identical whether the lattice temperature is a uniform elevated temperature set using\u00a0<span style=\"font-family: Courier New, Courier, mono;\">MODELS TEMP=\u00a0<\/span>or if the simulation includes lattice heating in\u00a0<b><i>Giga<\/i><\/b>.<\/p>\n<\/div><\/section><\/div><div class='av-flex-placeholder'><\/div><div class=\"flex_column av_one_fourth  flex_column_table_cell av-equal-height-column av-align-top av-zero-column-padding   avia-builder-el-3  el_after_av_three_fourth  avia-builder-el-last  \" style='border-radius:0px; ' id=\"whitepaper\" ><p><div  class='avia-builder-widget-area clearfix  avia-builder-el-4  el_before_av_image  avia-builder-el-first '><div id=\"nav_menu-29\" class=\"widget clearfix widget_nav_menu\"><div class=\"menu-simulation-standard-side-menu-chinese-simplified-container\"><ul id=\"menu-simulation-standard-side-menu-chinese-simplified\" class=\"menu\"><li id=\"menu-item-35571\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-35571\"><a href=\"https:\/\/silvaco.com\/zh-hans\/technical-library\/simulation-standard\/\">Simulation Standard<\/a><\/li>\n<\/ul><\/div><\/div><\/div><br \/>\n<div  class='avia-image-container  av-styling-    avia-builder-el-5  el_after_av_sidebar  el_before_av_button  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><a href=\"\/dynamicweb\/jsp\/downloads\/DownloadDocStepsAction.do?req=download&amp;nm=simstd_aug_1999_hints.pdf\" class='avia_image' target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" width=\"230\" height=\"300\" class='wp-image-21559 avia-img-lazy-loading-not-21559 avia_image' src=\"https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-230x300.jpg\" alt='' title='simstd_aug_1999_hints'  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-230x300.jpg 230w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-791x1030.jpg 791w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-768x1001.jpg 768w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-1179x1536.jpg 1179w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-1151x1500.jpg 1151w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-541x705.jpg 541w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-28x37.jpg 28w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-42x55.jpg 42w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints-37x48.jpg 37w, https:\/\/silvaco.com\/wp-content\/uploads\/simulationstandard\/simstd_aug_1999_hints.jpg 1281w\" sizes=\"(max-width: 230px) 100vw, 230px\" \/><\/a><\/div><\/div><\/div><br \/>\n<div  class='avia-button-wrap avia-button-center  avia-builder-el-6  el_after_av_image  avia-builder-el-last ' ><a href='\/dynamicweb\/jsp\/downloads\/DownloadDocStepsAction.do?req=download&amp;nm=simstd_aug_1999_hints.pdf' class='avia-button  avia-color-grey   avia-icon_select-yes-right-icon avia-size-small avia-position-center ' target=\"_blank\" rel=\"noopener noreferrer\"><span class='avia_iconbox_title' >Download Simulation Standard<\/span><span class='avia_button_icon avia_button_icon_right' aria-hidden='true' data-av_icon='\ue875' data-av_iconfont='entypo-fontello'><\/span><\/a><\/div><\/p><\/div><\/div><!--close column table wrapper. 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Autoclose: 1 -->\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A:\u00a0Modeling of the increase in breakdown voltage at elevated temperatures requires a model to describe the temperature dependence of the impact ionization coefficients. In\u00a0ATLAS\u00a0there are two impact ionization models that include lattice temperature dependence. They are the Crowell-Sze model[1] called using the command\u00a0IMPACT CROWELL\u00a0and the Selberrherr Model[2] called using the command\u00a0IMPACT SELB.<\/p>\n","protected":false},"author":5,"featured_media":21559,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7723],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v24.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Hints &amp; Tips August 1999 - Silvaco<\/title>\n<meta name=\"description\" content=\"A:\u00a0Modeling of the increase in breakdown voltage at elevated temperatures requires a model to describe the temperature dependence\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/silvaco.com\/simulation-standard\/hints-tips-august-1999\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hints &amp; 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