Current-Voltage Characteristics of Carrier Transport in Organic Light-Emitting Devices
Date Issued
2007
Date
2007
Author(s)
Chen, Chao-Wei
DOI
en-US
Abstract
This thesis focuses on the current-voltage characteristic of carrier transport. Two common SCLC theories are overviewed and developed. For the case of space charge limited current (SCLC) with exponential trap distribution, we develop the analytical solution, indicating that the traditional approximation underestimates the current magnitude and underestimates the parameter l in the model. For the case of SCLC coupled with Poole-Frenkel effect, the refined solution at high bias indicates the current depends on the temperature directly. For both cases, studying J-V-T will justify the validity of these models. We use the former model to ‾t our experiment data, and conclude that the product of thermal generated electron concentration and the mobility to be around 6.5x10^4 ~ 8x10^5(/cm V s).
Subjects
熱蒸鍍
空間電荷限制電流
比例法則
指數分佈陷阱
Poole-Frenkel效應
thermal evaporation
SCLC
The Scaling Law
exponential trap distribution
Poole-Frenkel effect
Type
thesis
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