Non-Doped Solid-State White Light-Emitting Electrochemical Cells Employing Microcavity Effect
碩士 === 國立交通大學 === 光電科技學程 === 103 === Solid-state white light-emitting electrochemical cells (LECs) have attracted research attention owing to their advantages of simple device structure, low operation voltage and compatibility with solution processes. In this work, we demonstrate a simple approach t...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2015
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| Online Access: | http://ndltd.ncl.edu.tw/handle/84541110745351204032 |
| Summary: | 碩士 === 國立交通大學 === 光電科技學程 === 103 === Solid-state white light-emitting electrochemical cells (LECs) have attracted research attention owing to their advantages of simple device structure, low operation voltage and compatibility with solution processes. In this work, we demonstrate a simple approach to obtain white electroluminescence (EL) from non-doped LECs based on a single blue-emitting complex. With a relatively thicker emissive layer, red emission can be additionally enhanced by microcavity effect when the recombination zone moves to proper positions. Hence, white EL can be harvested by combining blue emission from complex and red emission from microcavity effect. These non-doped white LECs show external quantum efficiencies and power efficiencies up to 5.6% and 12.5 lm W-1, respectively. These results show that efficient white EL can be obtained in simple non-doped LECs.
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