<P>Semiconducting two-dimensional (2D) transition metal dichalcogenides (TMDCs) are promising gas-sensing materials due to their large surface to -volume ratio. However, their poor gas-sensing performance resulting from the low response, incompl...
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https://www.riss.kr/link?id=A107498982
2016
-
SCOPUS,SCIE
학술저널
9287-9296(10쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>Semiconducting two-dimensional (2D) transition metal dichalcogenides (TMDCs) are promising gas-sensing materials due to their large surface to -volume ratio. However, their poor gas-sensing performance resulting from the low response, incompl...
<P>Semiconducting two-dimensional (2D) transition metal dichalcogenides (TMDCs) are promising gas-sensing materials due to their large surface to -volume ratio. However, their poor gas-sensing performance resulting from the low response, incomplete recovery, and insufficient selectivity hinders the realization of high-performance 2D TMDC gas sensors. Here, we demonstrate the improvement of gas-sensing performance of large-area tungsten disulfide (WS2) nanosheets through surface functionalization using Ag nanowires (NWs). Large-area WS, nanosheets were synthesized through atomic layer deposition of WO3 followed by sulfurizatdon. The pristine WS2 gas sensors exhibited a significant response to acetone and NO2 but an incomplete recovery in the case of NO2 sensing. After AgNW functionalization, the WS, gas sensor showed dramatically improved response (667%) and recovery upon NO2 exposure. Our results establish that the proposed method is a promising strategy to improve 2D TMDC gas sensors.</P>
Isolated Mesoporous Microstructures Prepared by Stress Localization-Induced Crack Manipulation