以空間電荷限制電流模型探討有機發光二極體之電流電壓特性

Study of Organic Light-Emitting Diode Current-Voltage Characteristics to Use Space Charge Limited Current Model

黃淑嬌(Sue- chiao Huang)

指導教授 ： 莊賦祥

共同指導教授 ： 蔡裕勝

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所在職專班/碩士(2011年)

摘要

1.在本篇論文中我們運用空間電荷限制電流公式(space-charge-limited-current,以下簡稱SCLC)並運用MATLAB軟體來模擬有機電激發光元件(以下簡稱OLED)的電特性，以瞭解微觀的有機電激發光元件的物理特性。
2.在NPB單層元件，操作電壓為7伏特，SCLC與實驗值的平均吻合度為90%。在Alq3單層元件，操作電壓為10伏特，SCLC與實驗值的平均吻合度為96.34%。
3.在雙層元件，NPB厚度30 nm，Alq3厚度60 nm，操作電壓為8伏特，SCLC與實驗值的吻合度為97.8 %。
4.在雙層元件，SCLC模擬元件厚度與電流關係得知，電洞流佔總電流的80 %以上。透過SCLC的模擬，我們推算出當NPB厚度30 nm，Alq3厚度9 nm時，元件可以達到電荷平衡。

關鍵字

有機發光二極體 ； 電子流 ； 電洞流 ； 空間電荷限制電流 ； 厚度

並列摘要

1 In the paper we use space-charge-limited current formula to simulate the organic light-emitting diode electrical characteristics, to understand the organic light-emitting diodes physical characteristics.
2. NPB single-layer device in the operating voltage of 7 volts, SCLC consistent with the experimental value of the average degree of 90%. Components in the Alq3 layer, the operating voltage of 10 volts, SCLC agreement with the experimental value of the average degree of 96.34%.
3. In the double-layer components, NPB thickness of 30nm, Alq3 thickness of 60nm, operating voltage of 8 volts, SCLC degree of fit with the experimental value of 97.8%.
4. In the double-layer components, SCLC and the current relationship between the thickness of the analog components that, the holes flow more than 80% of total current. Through the simulation of SCLC, we calculate when the NPB thickness 30nm, Alq3 thickness 9nm, the components can achieve charge balance.

並列關鍵字

Organic Light-Emitting Diode ； the electron current ； the hole current ； space charge limited current ； thickness

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