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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 楊志忠 | |
dc.contributor.author | Hsin-Chun Chiang | en |
dc.contributor.author | 江信均 | zh_TW |
dc.date.accessioned | 2021-06-17T04:53:23Z | - |
dc.date.available | 2021-08-01 | |
dc.date.copyright | 2018-08-01 | |
dc.date.issued | 2018 | |
dc.date.submitted | 2018-07-30 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/71108 | - |
dc.description.abstract | 在本論文研究中,我們放置銀奈米顆粒於發綠光的氮化銦鎵/氮化鎵量子井和發紅光的硒化鎘/硫化鋅量子點之間來同時與量子井和量子點產生表面電漿子耦合,以增強量子井和量子點的內部量子效率。我們也觀察到在塗佈高密度量子點樣品中,經由表面電漿子耦合量子點的絕對發光強度明顯增強。比較不同尺寸銀奈米顆粒所產生不同共振波長局域表面電漿子的耦合效果,我們發現當共振波長位於量子井和量子點發光波長中間時,量子點的內部量子效率提升最顯著。此現象是因為局域表面電漿子共振的涵蓋範圍包含了量子井和量子點的發光波段,表面電漿子耦合的效果不只分別增加了量子井和量子點的發光效率,也增強了量子點在量子井發光波段的吸收,結合上述因素可造成最佳量子點內部量子效率的提升。 | zh_TW |
dc.description.abstract | By placing Ag nanoparticles (NPs) between green-emitting (~520 nm) InGaN/GaN quantum wells (QWs) and red-emitting (~620 nm) CdSe/ZnS quantum dots (QDs) for inducing simultaneous surface plasmon (SP) coupling with QWs and QDs, the internal quantum efficiencies (IQEs) of both QDs and QWs can be enhanced. With a high enough QD density, the absolute emission intensity of QDs can also be enhanced through SP coupling. By comparing the samples with different Ag NP geometries, an Ag NP structure producing the localized surface plasmon (LSP) resonance peak around the middle between the QW and QD emission wavelengths leads to the maximum QD IQE enhancement. This behavior is attributed to the LSP resonance coverage of both QW and QD emission wavelengths such that the SP coupling can be effective for enhancing QW emission at ~520 nm, QD absorption at ~520 nm, and QD emission at ~620 nm at the same time. The combination of those effects results in an overall largest increase of QD IQE. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T04:53:23Z (GMT). No. of bitstreams: 1 ntu-107-R04941082-1.pdf: 1291400 bytes, checksum: e203175b7828cdf9289c6d86c36a4c42 (MD5) Previous issue date: 2018 | en |
dc.description.tableofcontents | 致謝 i
摘要 ii Abstract iii Contents iv Chapter 1 Introduction 1 1.1 Quantum dots 1 1.2 Surface plasmons 2 1.3 Surface plasmon coupled light emitting diode 6 1.4 Color conversion for color display 9 1.5 Surface plasmon coupling for enhancing color conversion 10 1.6 Research motivations 11 1.7 Thesis structure 12 Chapter 2 Conversion Enhancements with Low Quantum Dot Densities 17 2.1 Device structures and measurement methods 17 2.2 Results and discussions on green into red conversion 20 2.3 Results and discussions on green into yellow conversion 24 Chapter 3 Conversion Enhancements with High Quantum Dot Densities 43 3.1 Device structures and sample designations 43 3.2 Results and discussions on green into red conversion 44 Chapter 4 Conclusions 59 References 60 | |
dc.language.iso | en | |
dc.title | 不同波長發光體同時表面電漿子耦合以增強光色轉換效率 | zh_TW |
dc.title | Simultaneous Surface Plasmon Couplings with Light Emitters of Different Wavelengths for Enhancing Color Conversion Efficiency | en |
dc.type | Thesis | |
dc.date.schoolyear | 106-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 江衍偉,林浩雄,黃建璋,吳育任 | |
dc.subject.keyword | 氮化銦鎵量子井,表面電漿子,量子點,奈米顆粒, | zh_TW |
dc.subject.keyword | InGaN Quantum Wells,Surface Plasmon Coupling,Quantum Dot,nanoparticle, | en |
dc.relation.page | 69 | |
dc.identifier.doi | 10.6342/NTU201802169 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2018-07-30 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 光電工程學研究所 | zh_TW |
顯示於系所單位: | 光電工程學研究所 |
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