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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 童世煌(Shih-Huang Tung) | |
| dc.contributor.author | Chung-Hao Liu | en |
| dc.contributor.author | 劉仲晧 | zh_TW |
| dc.date.accessioned | 2021-06-16T03:56:23Z | - |
| dc.date.available | 2015-03-01 | |
| dc.date.copyright | 2015-02-04 | |
| dc.date.issued | 2015 | |
| dc.date.submitted | 2014-12-10 | |
| dc.identifier.citation | 1. He, Z.; Zhong, C.; Su, S.; Xu, M.; Wu, H.; Cao, Y. Enhanced power-conversion efficiency in polymer solar cells using an inverted device structure. Nature Photonics 2012, 6 (9), 593-597.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/55318 | - |
| dc.description.abstract | 有機太陽能電池研究領域中，高規整度聚(3-己基噻吩)是目前研究最為深入的材料，其太陽能電池轉換效率約為5%。然而，如何提升太陽能電池轉換效率的穩定度，一直以來是此領域的挑戰。本研究中，為了提升太陽能電池轉換效率的穩定度，我們研究混摻不同規整度聚(3-己基噻吩)與[6,6]-苯基C60-丁酸甲酯的光學性質、型態以及太陽能電池轉換效率的穩定度，發現添加少量低規整度聚(3-己基噻吩)可以有效提升太陽能電池轉換效率的穩定度(高規整度與低規整度聚(3-己基噻吩)重量比為95:5)。低規整度聚(3-己基噻吩)的非結晶結構與[6,6]-苯基C60-丁酸甲酯具有良好的相溶性，可以避免[6,6]-苯基C60-丁酸甲酯隨時間產生聚集。我們使用原子力顯微鏡鑑定薄膜的表面，發現加入少量低規整度聚(3-己基噻吩)後的表面粗糙度並沒有隨時間明顯的增加。另外，從X光散射與光學顯微鏡的量測中，證實混摻低規整度聚(3-己基噻吩)可以延緩[6,6]-苯基C60-丁酸甲酯隨時間產生聚集形成穩定的主動層結構。本研究結果顯示，加入少量低規整度聚(3-己基噻吩)可以有效避免[6,6]-苯基C60-丁酸甲酯隨時間產生聚集，形成穩定的主動層結構，因此提升太陽能電池轉換效率的穩定度。 | zh_TW |
| dc.description.abstract | Regioregular poly(3-hexylthiophene) (P3HT) has been the most-studied conjugated polymer for fabricating bulk heterojunction organic solar cells with an acceptable power-conversion efficiencies up to approximately 5%. However, a key challenge to the commercialization of organic solar cells is the achievement of power conversion efficiency stability. In this study, we investigated the optical properties, the photovoltaic performance, and the morphology of ternary blends consisting of regioregular poly (3-hexylthiophene) (c-P3HT), regiorandom P3HT (a-P3HT), and [6,6]-Phenyl C60-butyric acid methyl ester (PCBM). The photovoltaic cells are fabricated by inverted device structure. We found that the stability of power conversion efficiency can be significantly improved by mixing c-P3HT with a small amount of a-P3HT (c-P3HT:a-P3HT = 95:5). We attribute such an improvement to the amorphous nature of a-P3HT that prevents PCBM from severe aggregation with time. We utilized atomic force microscopy (AFM) to characterize the surface of thin films and found that thin films with a-P3HT show less increase in surface roughness with time compared to neat c-P3HT film. In addition, grazing incidence small-angle X-ray scattering (GISAXS) demonstrates that the aggregation rate of PCBM is retarded when a-P3HT is added, which can macroscopically be confirmed by optical microscopy images where large PCBM crystals are seen after a longer annealing time with the presence of a-P3HT. These results suggest that the phase separation can be suppressed by introducing a-P3HT in active layer and thus stable morphologies can be achieved and the stability of solar cells is enhanced. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T03:56:23Z (GMT). No. of bitstreams: 1 ntu-104-R01549008-1.pdf: 4399473 bytes, checksum: 67b0f005c1ac6e456f902e6e39a280e5 (MD5) Previous issue date: 2015 | en |
| dc.description.tableofcontents | 口試委員會審定書
誌謝 i 中文摘要 ii ABSTRACT iii CONTENTS iv LIST OF FIGURES vii LIST OF TABLES xiii Chapter 1 Introduction 1 Chapter 2 Literature Review 4 2.1 Background of Polymer Solar Cells 4 2.1.1 Introduction 4 2.1.2 Polymer Solar Cell Materials 5 2.2 The Effects of P3HT:PCBM Solar Cells Performance 7 2.2.1 Molecular Weight Effect 7 2.2.2 Solvent Quality Effect 8 2.2.3 Thermal Annealing Effect 9 2.3 The Effects of Regioregularity on Solar Cell Performance 11 2.3.1 The Influence of Regioregularity on P3HT: PCBM Solar Cell Performance 11 2.3.2 Ternary Mixing on Blend Morphology and Solar Cell Performance 12 2.4 The Stability of Polymer Solar Cell 15 2.4.1 The Normal and Inverted Geometry Devices 15 2.4.2 Critical Parameters for Solar Cell Efficiency 16 2.4.3 ISOS Standard Procedures for Lifetime Measurement 17 Chapter 3 Experimental Section 34 3.1 Materials 34 3.2 Samples Preparation 34 3.3 Photovoltaic Devices Fabrication 35 3.4 Characterization 36 3.4.1 UV-Vis Absorption 36 3.4.2 Photoluminescence (PL) Measurement 36 3.4.3 Atomic Force Microscopy Measurement 36 3.4.4 Grazing incidence X-ray scattering (GIXS) 36 3.4.5 Optical Microscopy Measurement 37 Chapter 4 Results and Discussion 41 4.1 Properties and Structures of the Blends 41 4.1.1 UV-Vis Absorption Measurement 41 4.1.2 Photoluminescence Measurement 43 4.1.3 Atomic Force Microscopy Measurement 44 4.1.4 Grazing Incidence Wide-Angle X-ray Scattering Measurement 45 4.2 The Stability of Solar Cell Performance 46 4.3 Time-Dependent Morphology 49 4.3.1 The Root Mean Square Surface Roughness of Thin Films 49 4.3.2 Grazing Incidence Small-Angle X-ray Scattering of Thin Films 50 4.3.3 The Effect of Time at High Temperature 52 4.3.4 Optical Microscopy Measurement 54 4.4 Mechanisms 55 Chapter 5 Conclusions 83 | |
| dc.language.iso | en | |
| dc.subject | 規整度 | zh_TW |
| dc.subject | 塊材異質接面 | zh_TW |
| dc.subject | 穩定度 | zh_TW |
| dc.subject | 型態學 | zh_TW |
| dc.subject | 聚(3-己基?吩) | zh_TW |
| dc.subject | 太陽能電池 | zh_TW |
| dc.subject | Stability | en |
| dc.subject | P3HT | en |
| dc.subject | Regioregularity | en |
| dc.subject | Solar cell | en |
| dc.subject | Bulk heterojunction | en |
| dc.subject | Morphology | en |
| dc.title | 利用無規整度聚3-己基噻吩改善太陽能元件效率穩定度 | zh_TW |
| dc.title | Using Regiorandom Poly(3-hexylthiophene) to Enhance the Stability of Polymer Solar Cells | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 103-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 鄭如忠(Ru-Jong Jeng),詹益慈(Yi-Tsu Chan),劉振良(Cheng-Liang Liu) | |
| dc.subject.keyword | 型態學,規整度,聚(3-己基?吩),太陽能電池,塊材異質接面,穩定度, | zh_TW |
| dc.subject.keyword | Morphology,P3HT,Regioregularity,Solar cell,Bulk heterojunction,Stability, | en |
| dc.relation.page | 94 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2014-12-11 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 高分子科學與工程學研究所 | zh_TW |
| 顯示於系所單位： | 高分子科學與工程學研究所 | |
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| ntu-104-1.pdf 未授權公開取用 | 4.3 MB | Adobe PDF |
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