ERICA 소재부품융합 첨단제조장비 혁신인재 교육연구단

2023학년 2학기 제4회 정기세미나를 다음과 같이 개최하오니, 연구단 참여 대학원생 및 교수님들의 많은 참여를 부탁드립니다.

이번 강연에는 재료화학공학과 이화성 교수님의 초청으로 금오공과대학교 이은호 교수님을 모시고 세미나를 개최합니다.

--------------------------------------------------------- 정기 세미나 ---------------------------------------------------------- 

1. 주제 : Vacancy Induced Nonvolatile Characteristics for Neurmorphic Computing

2. 연사 : 이은호 교수 (금오공과대학교)

3. 일시 : 2023년 10월 18일(수) 13시 

4. 장소 : 컨퍼런스홀 101호

5. 발표 내용

Recently, two-dimensional transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS2) have attracted great attention due to their unique properties. To modulate electronic properties and structure of TMDs, it is crucial to precisely control chalcogenide vacancies and several methods have been already suggested. However, they have several limitations such as plasma damage by ion bombardment. In this lecture, we present a novel solvent-assisted vacancy engineering (SAVE) method to modulate sulfur vacancies in MoS2. Considering polarity and Hansen solubility parameter (HSP), three solvents were selected. Sulfur vacancies can be modulated by immersing MoS2 in each solvent, supported by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy analyses. SAVE method can further expand its application in memory devices representing memristive performance and synaptic behaviors. We represented the charge transport mechanism of sulfur vacancy migration in MoS2. The non-destructive, scalable, and novel SAVE method controlling sulfur vacancies is expected to be a guideline for constructing a vacancy engineering system of TMDs.

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많은 참석 부탁드립니다.

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