a国产,中文字幕久久波多野结衣AV,欧美粗大猛烈老熟妇,女人av天堂

當前位置:主頁 > 科技論文 > 電子信息論文 >

基于表面勢的非晶氧化鋅薄膜晶體管漏電流模型的研究

發(fā)布時間:2018-09-14 19:55
【摘要】:非晶氧化鋅薄膜晶體管(a-Zn O TFTs)在有源矩陣液晶顯示(AMLCD)器件、固體圖像傳感器、化學(xué)傳感器等應(yīng)用中發(fā)揮越來越重要的作用。由于a-Zn O器件較氫化非晶硅(aSi:H)器件呈現(xiàn)出更復(fù)雜的電學(xué)特性,而且a-Zn O器件比a-Si:H器件具有更高的遷移率;因此,合理地構(gòu)建a-Zn O TFTs的物理模型也變得越來越重要,特別是闡明a-Zn O TFTs漏電流的物理機制,給出與器件特性相一致的函數(shù)關(guān)系,可為a-Zn O TFTs顯示器件的制備和電路仿真提供理論依據(jù)。本文的研究目標是詳細地對a-Zn O TFTs的物理機制進行系統(tǒng)研究,并在對a-Zn O TFTs遷移率討論的基礎(chǔ)上,基于表面勢對a-Zn O TFTs的漏電流特性建立緊湊模型,并使該模型具備嵌入電路仿真器的條件;诓此煞匠毯透咚苟ɡ,采用非迭代算法,在考慮a-Zn O TFTs帶隙能態(tài)的指數(shù)帶尾態(tài)和深能態(tài)的完整分布條件下,解析地建立了a-Zn O TFTs的表面勢緊湊模型。本文的表面勢解析求解,是根據(jù)數(shù)學(xué)變換和Lambert W函數(shù),采用有效電荷密度方法,建立a-Zn O TFTs表面勢的一種非迭代求解新算法。與數(shù)值迭代算法的計算結(jié)果進行比較,該表面勢解析算法的絕對誤差低至-510 V數(shù)量級,且提高了計算效率;此算法避免了迭代求解,可有效減少仿真時間,為模型嵌入電路仿真器提供了實現(xiàn)條件。基于上述非迭代表面勢算法,可以建立a-Zn O TFTs的漏電流方程。通過與不同漏源電壓和柵源電壓下a-Zn O TFTs器件的實驗數(shù)據(jù)進行對比,得出漏電流模型的輸出特性與轉(zhuǎn)移特性曲線,進而驗證了本文漏電流模型的有效性和正確性。此外,為進一步研究a-Zn O TFTs的漏電流特性,本文通過對冪律函數(shù)遷移率的分析和對有效溝道遷移率的推導(dǎo),以及對這兩種遷移率下器件漏電流方程的誤差分析,得出適用于本文漏電流模型的最優(yōu)遷移率方程。綜上所述,本文提出的a-Zn O TFTs直流模型,是以a-Zn O TFTs工作的物理機制作為基礎(chǔ),并以表面勢為函數(shù)的方程進行表征。模型參數(shù)與器件參數(shù)之間的關(guān)系簡單,模型能夠依據(jù)現(xiàn)有實驗數(shù)據(jù)進行較好的擬合;模型需要的計算量少,模型的數(shù)學(xué)表達式及其一階導(dǎo)數(shù)連續(xù),因此可滿足嵌入電路仿真器的條件。
[Abstract]:Amorphous ZnO thin film transistors (a-Zn O TFTs) play an increasingly important role in the applications of active matrix liquid crystal display (AMLCD) devices solid image sensors and chemical sensors. Since a-Zn O devices exhibit more complex electrical properties than hydrogenated amorphous silicon (aSi:H) devices, and a-Zn O devices have higher mobility than a-Si:H devices, it is becoming more and more important to reasonably construct the physical model of a-Zn O TFTs. In particular, the physical mechanism of leakage current of a-Zn O TFTs is clarified, and the functional relation consistent with the characteristics of the device is given, which can provide a theoretical basis for the fabrication and circuit simulation of a-Zn O TFTs display devices. The purpose of this paper is to study the physical mechanism of a-Zn O TFTs in detail, and based on the discussion of a-Zn O TFTs mobility, a compact model of leakage current characteristics of a-Zn O TFTs based on surface potential is established. The model has the condition of embedded circuit simulator. Based on Poisson equation and Gao Si theorem, the surface potential compact model of a-Zn O TFTs is established analytically under the condition of complete distribution of exponential band tail state and deep energy state of a-Zn O TFTs bandgap energy state by using non-iterative algorithm. Based on the mathematical transformation and Lambert W function, a new non-iterative algorithm for solving a-Zn O TFTs surface potential is established by using the effective charge density method. Compared with the results of numerical iterative algorithm, the absolute error of the algorithm is as low as -510V, and the computational efficiency is improved, the algorithm avoids iterative solution and can effectively reduce the simulation time. The implementation condition of the model embedded circuit simulator is provided. Based on the above non-iterative surface potential algorithm, the leakage current equation of a-Zn O TFTs can be established. By comparing with the experimental data of a-Zn O TFTs devices under different drain voltage and gate source voltage, the output characteristics and transfer characteristic curves of the leakage current model are obtained, and the validity and correctness of the leakage current model in this paper are verified. In addition, in order to further study the leakage current characteristics of a-Zn O TFTs, through the analysis of the mobility of power law function and the derivation of effective channel mobility, as well as the error analysis of leakage current equation of devices under these two kinds of mobility, The optimal mobility equation applicable to the leakage current model is obtained. To sum up, the a-Zn O TFTs DC model proposed in this paper is based on the physical mechanism of a-Zn O TFTs work and is characterized by the equation with surface potential as a function. The relationship between the model parameters and the device parameters is simple, the model can fit well according to the existing experimental data, the model needs less calculation, the mathematical expression of the model and its first derivative are continuous. Therefore, the condition of embedded circuit simulator can be satisfied.
【學(xué)位授予單位】:暨南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TN321.5

【參考文獻】

相關(guān)博士學(xué)位論文 前1條

1 張杰;氧化物半導(dǎo)體薄膜晶體管的若干研究[D];浙江大學(xué);2014年

,

本文編號:2243716

資料下載
論文發(fā)表

本文鏈接:http://www.wukwdryxk.cn/kejilunwen/dianzigongchenglunwen/2243716.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶ba4fd***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com
亚洲伊人av| 欧美人与禽zoz0性3d| 伦理久久久久久久爱| 亚洲国产精品成人综合久久久| 一本久道久久综合狠狠躁AV| 91精品国产一级毛片国语版| 99久久久国产精品免费牛牛| 成人AV鲁丝片一区二区免费| 黑人精品欧美一区二区蜜桃| 国产精品久久一区二区三区| 网址你懂得| 久久人人爽人人爽爽久久小说| 欧美大香蕉| 中文在线一区二区| 久久久久久久综合网| 黄色成人网站免费无码AV| 精品免费一区二区在线| 被4个男人摁着强进了好爽| 最新版天堂资源官网在线| 精品丰满人妻无套内射| 国产熟妇乱妇熟色t区| 欧美性猛交xxxx黑人猛交| 国产图区亚洲偷窥白拍| 少妇太爽了| 热久久国产| 国产美女永久免费无遮挡| 青青草影院| 色综合天天综合网天天狠天天 | 国产精品日本| 一个人在线观看的www| 美女张开腿露出尿口与奶头的照片| 中文字幕无码毛片免费看| 亚洲AV无码精品色午夜 | 野花视频在线观看免费观看最新| 大战丰满人妻性色AV偷偷| 亚洲av成人无码一二三在线观看| 天干天干天啪啪夜爽爽AV| 国语自产精品视频在线区| 少妇爆乳无码专区网站| 中文字幕亚洲精品乱码| 国产精品爽爽ⅤA在线观看 |