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Optoelectrical and Photochemical Investigation of 2D Nanomaterials and their Nanocomposites Fabricated by Laser Ablation in Liquid
https://tokushima-u.repo.nii.ac.jp/records/2008948
https://tokushima-u.repo.nii.ac.jp/records/20089485fb8fcda-8608-4be4-bcba-8eb78c2a3b75
| 名前 / ファイル | ライセンス | アクション |
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k3523_abstract.pdf (47.9 KB)
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k3523_review.pdf (39.5 KB)
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k3523_fulltext.pdf (5.37 MB)
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| Item type | 文献 / Documents(1) | |||||||||||
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| 公開日 | 2021-05-27 | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | open access | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||||
| 資源タイプ | doctoral thesis | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | NA | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_be7fb7dd8ff6fe43 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Optoelectrical and Photochemical Investigation of 2D Nanomaterials and their Nanocomposites Fabricated by Laser Ablation in Liquid | |||||||||||
| 言語 | en | |||||||||||
| タイトル別表記 | ||||||||||||
| その他のタイトル | 液中レーザーアブレーション法で作製した2Dナノ材料とその複合材料の光電気的および光化学的特性の研究 | |||||||||||
| 言語 | ja | |||||||||||
| 著者 |
ドンガデ, シッダント
× ドンガデ, シッダント
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Synthesis of In2Se3 nanocubes fabricated by laser ablation under DI water and its Field electron emission properties as well as the carrier dynamics were investigated successfully for the application of high current density cold cathode material. The morphological characterization carried out using field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) reveal that the nano-cubes have an average size of 70 nm. The X-ray diffraction and Raman analysis clearly imply the formation of pure and crystalline In2Se3 phase only, without any impurity phases, despite the laser ablation being carried out in aqueous medium. A superior FE property characterized by lower values of turn-on and threshold fields as compared to In2Se3 nanowires emitter and ability to deliver very large current density ~2656 μA/cm2 by applying the field of 9.7 V/μm. Transient absorption spectra reveals there are no deep trap levels, the electrons in nanocubes can be regards as mobile carriers through the hopping process and travel long distance in the absence of holes. Carrier dynamics and photocatalytic performance of novel In2Se3/ZnO/Au-nanoparticle ternary composite system is investigated. The ternary photocatalytic system was fabricated using hydrothermal and laser ablation technique. The structural and physical characteristics have been studied by SEM, TEM, ultraviolet-visible (UV–Vis) spectrophotometry, and micro-Raman spectroscopy. The photocatalytic activity of the nanocomposites was estimated through the photocatalytic degradation utilizing organic dye of methylene blue in an aqueous solution. Results suggested that the ternary composite showed better photocatalytic performance compared with the pristine and binary composites. Production of few layers graphene from graphite is fabricated by UV laser scanning method. Morphological, structural and optical properties were investigated by TEM, HRTEM, UV-Vis spectroscopy and Micro-Raman spectroscopy. The surface modification of graphite under different liquid environment was investigated by optical laser microscope. After laser scanning the holes in graphite surface becomes dipper and less wide. The laser scanning process is most effective process to remove the layers of the graphite plate. Dips and hill are modified after laser scanning. |
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| 言語 | en | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | field emission | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | transient absorption spectroscopy | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | laser ablation | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | 2D material | |||||||||||
| 書誌情報 |
発行日 2021-03-23 |
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| 備考 | ||||||||||||
| 言語 | ja | |||||||||||
| 値 | 内容要旨・審査要旨・論文本文の公開 学位授与者所属 : 徳島大学大学院先端技術科学教育部（システム創生工学専攻） |
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| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 報告番号 | ||||||||||||
| 学位授与番号 | 甲第3523号 | |||||||||||
| 学位記番号 | ||||||||||||
| 言語 | ja | |||||||||||
| 値 | 甲先第403号 | |||||||||||
| 学位授与年月日 | ||||||||||||
| 学位授与年月日 | 2021-03-23 | |||||||||||
| 学位名 | ||||||||||||
| 言語 | ja | |||||||||||
| 学位名 | 博士（工学） | |||||||||||
| 学位授与機関 | ||||||||||||
| 言語 | ja | |||||||||||
| 学位授与機関名 | 徳島大学 | |||||||||||
