鈣鈦礦發光二極體熱特性模擬及優化之研究

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朱紹維(Shao-Wei Chu) 查詢紙本館藏

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光機電工程研究所

論文名稱

鈣鈦礦發光二極體熱特性模擬及優化之研究

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摘要(中)

鈣鈦礦作為一種結構統稱，該類結構之材料因有出色的光學特性而受到半導體產業的重視，其應用之一為鈣鈦礦發光二極體(以下簡稱鈣鈦礦LED)。鈣鈦礦LED相比於其他的常見發光二極體有原料容易取得、價格廉價、可溶液加工等優勢，因此作為新一代的發光元件備受矚目。然而現階段鈣鈦礦LED仍有許多不足之處，工作過程之產熱將會影響其性能與壽命的表現，故本研究將著重探討鈣鈦礦發光二極體之熱特性。
本文利用模擬軟體建構鈣鈦礦LED之熱模擬模型，並與樣品實驗交叉比對，後藉由更改結構與材料對模型進行改良，並透過模擬驗證不同措施對散熱性能的提升效果。
本研究主要分爲實驗與模擬相互驗證，以及結構優化設計：首先於實驗中給予鈣鈦礦發光二極體樣品穩定電源，並量測其溫度，後透過軟體建立樣品模型，並在相同條件下進行模擬，隨後比對兩者結果以驗證模擬模型之準確度；其次是結構優化設計，本研究提出了三種措施，包含：1) 對電極的間距進行調整；2) 於模型中加入電子與電洞傳輸層；3) 變更模型電極之材料，並模擬分析上述不同方案對於鈣鈦礦LED元件的散熱性能影響。

摘要(英)

Perovskite has received much attention in the semiconductor industry because of its excellent optical properties. One of the applications of this material is the perovskite light-emitting diode (PeLED). Compared with other common light-emitting diodes (LED), PeLED has plenty of advantages, such as compatibility with solution process lower price. However, there are still many deficiencies in PeLED in current stage. The heat generation during the working process may affect its performance and lifetime. Therefore, this study will focus on the thermal characteristics of the PeLED.
In this thesis, a thermal simulation model of PeLED had been constructed in the simulation software, COMSOL. Also, the model has been compared with the experiments of the PeLED sample. After the verification, improved the thermal performance of PeLED was improved by adjusting the structure and materials in the model. Through the simulation, the performance of each measure on the improvement of heat dissipation was verified.
This research is mainly divided into two parts: the verification of the model through the comparisons with experiments and the simulation of the proposed measures with different structures and materials. In the experiment, a stable power was provided to a PeLED sample, and then its temperature was measured with a thermocouple. In the simulation, the sample model was established in the software under the conditions agreeing with the experiment. Compared with the experimental results, the simulation results have showed the acceptable accuracy. The second part was to change the structures and materials of the PeLED in the verified model for improving its thermal performance. Three measures, including: 1) adjusting the spacing between electrodes, 2) adding electron transfer layer and hole transfer layer to the device, and 3) using different electrode materials are proposed and simulated in this study. The analyses of the heat dissipation performance of the PeLED for every measure are discussed in this thesis.

關鍵字(中)

★ 鈣鈦礦發光二極體
★ 熱模擬
★ 樣品實驗
★ 散熱性能優化

關鍵字(英)

★ Perovskite light-emitting diode
★ Thermal simulation
★ Sample experiment
★ Heat dissipation performance

論文目次

目錄
摘要 I
Abstract II
致謝 IV
第一章、緒論 1
1-1前言 1
1-2文獻回顧 3
1-3研究動機 6
1-4論文架構 8
第二章、基礎理論 9
2-1鈣鈦礦發光二極體之發光原理 9
2-2鈣鈦礦發光二極體之光學特性 10
2-3鈣鈦礦發光二極體之發熱原理 12
2-3-1複合效應 12
2-3-2焦耳熱 14
2-4熱電模擬耦合理論 14
2-5鈣鈦礦發光二極體結構 16
2-6小結 18
第三章、鈣鈦礦發光二極體模擬與實驗介紹 19
3-1 實驗儀器介紹 19
3-1-1儀器校準實驗 21
3-1-2內插法 24
3-2單一與陣列鈣鈦礦發光二極體之模擬 25
3-2-1間距優化 30
3-3摻雜電子與電洞傳輸層鈣鈦礦發光二極體 31
3-6小結 34
第四章、模擬與實驗結果 35
4-1樣品概述 35
4-2單一鈣鈦礦LED晶片模擬 36
4-3陣列鈣鈦礦LED樣品模擬 39
4-4陣列樣品之變間距模擬 42
4-4-1最小間距模擬 42
4-4-2最大間距模擬 43
4-4-3不同間距模擬 44
4-5間距調整對散熱性能影響 45
4-6摻雜電子與電洞傳輸層鈣鈦礦LED模擬 50
4-6-1摻雜與未摻雜電子與電洞傳輸層 50
4-7電極材料對元件之散熱效應 54
4-8小結 55
第五章、結論與未來展望 57
5-1結論 57
5-2未來展望 58
參考文獻 59

參考文獻

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指導教授

韋安琪(An-Chi Wei)

審核日期

2022-8-25

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