Bifunctional Sensing Characteristics of Chemical Vapor Deposition Synthesized Atomic-Layered MoS2
Bifunctional Sensing Characteristics of Chemical Vapor Deposition Synthesized Atomic-Layered MoS2
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DOI：
10.1021/am508535x
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发表时间：
2015-02-04
影响因子：
9.5
通讯作者：
Hahm, Myung Gwan
中科院分区：
文献类型：
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作者：
Cho, Byungjin;Kim, Ah Ra;Hahm, Myung Gwan
二维二硫化钼(MoS2)原子层具有块状泡沫材料所没有的特殊和新颖的性质，因此在二维电子元件中具有很大的潜力。MoS2独特的性质，包括准2D结晶度、超高的表面体积比和高吸收系数，使高性能传感器应用成为可能。然而，单一功能传感器的实现对单个设备中各种先进的多功能传感器应用构成了限制。在这里，我们展示了化学气相沉积合成的MoS2基于电荷转移的灵敏(检测到120 ppb的NO2)和选择性气敏能力，以及良好的光敏特性，包括中等的光响应性(类似于71 mA/W)，可靠的光响应，和快速的光开关(
Two-dimensional (2D) molybdenum disulfide (MoS2) atomic layers have a strong potential to be adopted for 2D electronic components due to extraordinary and novel properties not available in their bulk foams. Unique properties of the MoS2, including quasi-2D crystallinity, ultrahigh surface-to-volume, and a high absorption coefficient, have enabled high-performance sensor applications. However, implementation of only a single-functional sensor presents a limitation for various advanced multifunctional sensor applications within a single device. Here, we demonstrate the charge-transfer-based sensitive (detection of 120 ppb of NO2) and selective gas-sensing capability of the chemical vapor deposition synthesized MoS2 and good photosensing characteristics, including moderate photoresponsivity (similar to 71 mA/W), reliable photoresponse, and rapid photoswitching (