【公開日：2025.06.10】【最終更新日：2025.05.19】
課題データ / Project Data
課題番号 / Project Issue Number
24JI0040
利用課題名 / Title
遷移金属カルコゲナイド層中の不純物元素の分析
利用した実施機関 / Support Institute
北陸先端科学技術大学院大学 / JAIST
機関外・機関内の利用 / External or Internal Use
外部利用/External Use
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）物質・材料合成プロセス/Molecule & Material Synthesis（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）次世代ナノスケールマテリアル/Next-generation nanoscale materials（副 / Sub）-
キーワード / Keywords
STEM, 2-dimensional material,ナノシート/ Nanosheet
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
Mohmad Abdul Rahman
所属名 / Affiliation
Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
Siti Nur Hidayah Yahya,Yukiko Takamura
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
Yoshifumi Oshima
利用形態 / Support Type
（主 / Main）技術代行/Technology Substitution（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
This report details the dry transfer process of doped MoS2 flakes on a glassy carbon substrate onto a Si chip with SiNx window for subsequent STEM imaging. The aim is to verify doping, identify the crystal structure, and determine the phase of doped MoS2. The dry transfer process will be conducted in a cleanroom environment to ensure high-quality transfer without contamination. The obtained STEM images and analysis will confirm the structural properties, doping concentration, and phase the doped MoS2 flakes. This information will facilitate further studies and assessment of the material as a catalyst for hydrogen evolution reaction.
実験 / Experimental
First, a PDMS/PPC stamp on a glass slide will be prepared. A PDMS film will be attached onto a glass slide, followed by plasma treatment to enhance adhesion. Then, poly-propylene carbonate (PPC) will be drop-casted and spin-coated onto the PDMS. Next, the prepared stamp will be aligned with the MoS2/glassy carbon sample under a microscope. The stamp will be slowly moved towards the sample until they are finally in-contact with each other. The sample will be heated to assist the flakes transfer process. Finally, the stamp with MoS2 flakes will be lifted. The same process will be repeated to transfer the MoS2 flakes onto the TEM chip for STEM imaging.
結果と考察 / Results and Discussion
The successful transfer of the MoS₂ flakes onto the PDMS/PPC stamp and the TEM chip was confirmed using optical microscopy. Subsequent STEM imaging verified the incorporation of dopant atoms into the MoS₂ lattice and revealed details of its crystal structure. Particular attention was paid to the phase of the MoS₂ near the dopant atoms, where local variations in phase were observed.
図・表・数式 / Figures, Tables and Equations
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件