| 학회 |
한국재료학회 |
| 학술대회 |
2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
| 권호 |
20권 2호 |
| 발표분야 |
B. 나노 재료(Nanomaterials) |
| 제목 |
Growth of Two Dimensional Transition Metal Disulfide Alloy Nanosheets based on Atomic Layer Deposition |
| 초록 |
Recently, modulation of electronic structures in two dimensional transition metal dichacogenides (2D TMDCs) nanosheets have been studied for versatility of 2D TMDCs nanosheets in optical devices such as phototransistor and photovoltaic with tunable band gap. Especially, several reports show that the band gap of 2D TMDCs alloy nanosheets such as Mo1-xWxS2, Mo1-xWxSe2 and MoS2xSe2(1-x) can be easily tuned according to the value of the x. However, the synthesis of 2D TMDCs alloy nanosheets with composition and layer controllability is still challenging. In this work, we synthesize Mo1-xWxS2 alloy nanosheets by sulfurization of a super-cycle atomic layer deposition (ALD) Mo1-xWxO3 thin film with composition and layer controllability. The X-ray photoemission spectroscopy, Raman and atomic force microscopy demonstrate that composition and layer number can be tuned by cycle ratio between ALD MoO3 and WO3 in one super-cycle and number of super-cycles in our super-cycle ALD based Mo1-xWxS2 alloy nanosheets process. |
| 저자 |
송정규1, 박주상1, 류경희2, 이종훈2, 이창완3, 황성환1, 명재민1, Clement Lansalot-Matras4, 김형준1
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| 소속 |
1연세대, 2울산과학기술대, 3한국화학(연), 4Air Liquide Laboratories Korea |
| 키워드 |
ALD; 2d; MoS2; WS2; TMDCs; nanosheet
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| E-Mail |
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