School of Materials and Chemistry, the University of Shanghai for Science and Technology, Shanghai 200093, China.
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China.
Sensors (Basel). 2023 Mar 14;23(6):3104. doi: 10.3390/s23063104.
A photodetector based on a hybrid dimensional heterostructure of laterally aligned multiwall carbon nanotubes (MWCNTs) and multilayered MoS was prepared using the micro-nano fixed-point transfer technique. Thanks to the high mobility of carbon nanotubes and the efficient interband absorption of MoS, broadband detection from visible to near-infrared (520-1060 nm) was achieved. The test results demonstrate that the MWCNT-MoS2 heterostructure-based photodetector device exhibits an exceptional responsivity, detectivity, and external quantum efficiency. Specifically, the device demonstrated a responsivity of 3.67 × 10 A/W (λ = 520 nm, V = 1 V) and 718 A/W (λ = 1060 nm, V = 1 V). Moreover, the detectivity (D*) of the device was found to be 1.2 × 10 Jones (λ = 520 nm) and 1.5 × 10 Jones (λ = 1060 nm), respectively. The device also demonstrated external quantum efficiency (EQE) values of approximately 8.77 × 10% (λ = 520 nm) and 8.41 × 10% (λ = 1060 nm). This work achieves visible and infrared detection based on mixed-dimensional heterostructures and provides a new option for optoelectronic devices based on low-dimensional materials.
基于横向排列的多壁碳纳米管 (MWCNTs) 和多层 MoS 的混合维度异质结构的光电探测器，采用微纳定点转移技术制备。由于碳纳米管的高迁移率和 MoS 的高效带间吸收，实现了从可见光到近红外（520-1060nm）的宽带检测。测试结果表明，基于 MWCNT-MoS2 异质结构的光电探测器器件具有出色的响应率、探测率和外量子效率。具体而言，该器件在 520nm 波长、1V 电压下的响应率为 3.67×10A/W，在 1060nm 波长、1V 电压下的响应率为 718A/W。此外，该器件的探测率（D*）分别为 1.2×10^-11 琼斯（520nm 波长）和 1.5×10^-11 琼斯（1060nm 波长）。该器件还表现出约为 8.77×10%（520nm 波长）和 8.41×10%（1060nm 波长）的外量子效率（EQE）值。这项工作实现了基于混合维度异质结构的可见光和红外检测，为基于低维材料的光电设备提供了新的选择。
