In this thesis, we propose the analytical calculations of single layer organic light emitting diode (OLED) characteristics using a device model which includes charge injection, trap charge limited, recombination, and the effect background dopping. Meanwhile, we report the results of a theoretical and simulated study of carrier transport between Schottky (ohmic) and organic contact in organic emitting diodes .
In this thesis, my model shows that in a doped organic material with ohmic contacts the current is ohmic at low voltage. If the ohmic contact at the cathode is replaced by an Schottky contact the current varies exponentially with the applied voltage V. The current changes to space charge limited current (SCLC) at high voltage. The voltage at which the change takes place depends on the dopant concentrations. In the SCLC regime the current varies according to well-known V2 law if there are no traps and the mobility is independent of the electric field.
In this model, we attempt to capture the salient features of organic LEDs with the minimal numberof physical assumptions. The aim is to describle intrinsic properties of the organic materical with the simplest model and add complexity as needed.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0622101-054526 |
| Date | 22 June 2001 |
| Creators | Huang, Yi-Shuo |
| Contributors | Ania Hong, Chung-Chih Wu, Wang-Chuang Kuo, Cheu-Pyeng Cheng, Uerng ¡VYih Ueng |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0622101-054526 |
| Rights | not_available, Copyright information available at source archive |
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