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X-ray in situ observation of graphene precipitating directly on sapphire substrate with and without Ti capping layer
https://repo.qst.go.jp/records/80484
https://repo.qst.go.jp/records/804843b746c74-1e45-4749-9560-cf9031e9b727
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-09-14 | |||||
| タイトル | ||||||
| タイトル | X-ray in situ observation of graphene precipitating directly on sapphire substrate with and without Ti capping layer | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Naritsuka, Shigeya
× Naritsuka, Shigeya× Yamada, Jumpei× Ueda, Yuki× Nakashima, Asato× Kashio, Tatsuya× Maruyama, Takahiro× Fujikawa, Seiji× Sasaki, Takuo× Takahasi, Masamitu× Fujikawa, Seiji× Sasaki, Takuo× Takahashi, Masamitsu |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In situ X-ray diffraction measurement was performed to study the precipitation mechanism of graphene from Ni catalyst with and without Ti capping layer using X-ray beam from a synchrotron radiation facility. The graphene precipitated on the surface of the catalyst in the case without the Ti capping layer while it did at the interface between the catalyst and the sapphire substrate in the case with the Ti capping layer. Each process, such as graphene nucleation and precipitation was successfully monitored even though graphene precipitated under the metal catalyst. The detailed mechanisms for both cases were discussed using the experimental results. Consequently, the crystallization of the catalyst is found to effectively suppress the precipitation at low temperature, which is useful to improve the quality of the precipitated graphene. The adjustment of the amount of the carbons is another important factor to precisely control the precipitation because graphene also precipitates after the carbons saturate the catalyst. |
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| 書誌情報 |
Journal of Crystal Growth 巻 549, p. 125861-1-125861-9, 発行日 2020-11 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0022-0248 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.jcrysgro.2020.125861 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0022024820303845?via%3Dihub | |||||
