{"id":28805,"date":"2019-07-04T00:00:19","date_gmt":"2019-07-04T00:00:19","guid":{"rendered":"https:\/\/silvaco.com\/uncategorized\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\/"},"modified":"2026-10-15T15:03:11","modified_gmt":"2026-10-15T22:03:11","slug":"channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects","status":"publish","type":"post","link":"https:\/\/silvaco.com\/ja\/simulation-standard\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\/","title":{"rendered":"Channel-length Dependence of a-IGZO TFTs with Self-heating Effects"},"content":{"rendered":"

Introduction<\/strong><\/h3>\n

Amorphous In-Ga-Zn-O thin-film transistors (a-IGZO TFTs) show a high mobility, a small sub-threshold swing, and a low OFF-current, and they are considered to be one of the most promising TFT for new flat-panel displays (FPDs). The high mobility originates from the unique electron transport in a-IGZO. The transport properties are different from those in conventional semiconductor materials like Si, for example, the mobility increases with increase of the electron concentration and\/or temperature. Therefore, the new mobility model for a-IGZO is necessary. In addition, as pixel sizes in the FPDs decreases, a channel-length, L<\/em>, of a-IGZO TFTs becomes shorter. It indicates that it is important to understand the operation of short-channel a-IGZO TFTs.<\/p>\n

An empirical mobility model IGZO.TOKYO was described in previous papers [1, 2]. Since the model reflects the mobility properties described above, a device simulator (Atlas\u2122) employing the mobility model can reproduce electrical properties of a long-channel a-IGZO TFT over a wide range of bias and temperature. On the other hand, we found that the model is not enough to describe the operation of short-channel a-IGZO TFTs.<\/p>\n

Hence a device model which can describe the short-channel effects of a-IGZO TFTs is proposed in this paper. A key of the device model is self-heating effects [3, 4]. We confirmed that when the model including the self-heating effects is employed, it is possible that the L<\/em> dependence of the ON-current is reproduced.<\/p>\n

\"\"<\/p>\n

Download Simulation Standard<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Introduction<\/p>\n

Amorphous In-Ga-Zn-O thin-film transistors (a-IGZO TFTs) show a high mobility, a small sub-threshold swing, and a low OFF-current, and they are considered to be one of the most promising TFT for new flat-panel displays (FPDs). The high mobility originates from the unique electron transport in a-IGZO. The transport properties are different from those in conventional semiconductor materials like Si, for example, the mobility increases with increase of the electron concentration and\/or temperature. Therefore, the new mobility model for a-IGZO is necessary. In addition, as pixel sizes in the FPDs decreases, a channel-length, L, of a-IGZO TFTs becomes shorter. It indicates that it is important to understand the operation of short-channel a-IGZO TFTs.<\/p>\n","protected":false},"author":3,"featured_media":18977,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[7570],"tags":[],"class_list":["post-28805","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-simulation-standard","entry","has-media"],"yoast_head":"\nChannel-length Dependence of a-IGZO TFTs with Self-heating Effects - Silvaco<\/title>\n<meta name=\"description\" content=\"Channel-length Dependence of a-IGZO TFTs with Self-heating Effects\" \/>\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\/ja\/simulation-standard\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Channel-length Dependence of a-IGZO TFTs with Self-heating Effects\" \/>\n<meta property=\"og:description\" content=\"Channel-length Dependence of a-IGZO TFTs with Self-heating Effects\" \/>\n<meta property=\"og:url\" content=\"https:\/\/silvaco.com\/ja\/simulation-standard\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\/\" \/>\n<meta property=\"og:site_name\" content=\"Silvaco\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SilvacoSoftware\/\" \/>\n<meta property=\"article:published_time\" content=\"2019-07-04T00:00:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-15T22:03:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/silvaco.com\/wp-content\/uploads\/2020\/02\/ss_self-heating_fig1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"550\" \/>\n\t<meta property=\"og:image:height\" content=\"397\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Erick Castellon\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SilvacoSoftware\" \/>\n<meta name=\"twitter:site\" content=\"@SilvacoSoftware\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"Erick Castellon\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\\\/\"},\"author\":{\"name\":\"Erick Castellon\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/#\\\/schema\\\/person\\\/e1dfed88a8f7a514e8e8414ad093e4f8\"},\"headline\":\"Channel-length Dependence of a-IGZO TFTs with Self-heating Effects\",\"datePublished\":\"2019-07-04T00:00:19+00:00\",\"dateModified\":\"2026-10-15T22:03:11+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\\\/\"},\"wordCount\":241,\"image\":{\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/silvaco.com\\\/wp-content\\\/uploads\\\/2020\\\/02\\\/ss_self-heating_fig1.jpg\",\"articleSection\":[\"Simulation Standard\"],\"inLanguage\":\"ja\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\\\/\",\"url\":\"https:\\\/\\\/silvaco.com\\\/ja\\\/simulation-standard\\\/channel-length-dependence-of-a-igzo-tfts-with-self-heating-effects\\\/\",\"name\":\"Channel-length Dependence of a-IGZO TFTs with Self-heating Effects - 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