论文标题
碳纳米管本地门控在单层Mose2中的Trion限制
Trion confinement in monolayer MoSe2 by carbon nanotube local gating
论文作者
论文摘要
我们成功地将TRIONS限制在带有CNT栅极电极的Mose2设备的一维限制空间中。干燥转移过程，包括对齐的CNT的确定性干燥转移，导致了带有CNT后门电极的HBN封装的Mose2设备。与没有CNT栅极电极的位置相反，通过CNT栅极电极施加电压会在带有CNT栅极电极的位置显着改变PL光谱。 PL成像表明，TRIONS的图像对比是沿着下面的CNT电极线性的，这与Trions对CNT局部门控的1D限制一致。从PL图像获得的限制宽度为5.5 x 10^2 nm，与纳米级1D限制的Trions一致，并且衍射极限扩大。这项工作证明了纳米级激子状态的电气控制，未来导致了新型的光电特性和激子设备。
We have successfully confined trions into a one-dimensional restricted space of a MoSe2 device with CNT gate electrodes. The dry transfer process, including deterministic dry transfer of aligned CNTs, has led to an hBN-encapsulated MoSe2 device with CNT back gate electrodes. In contrast to a location without CNT gate electrodes, applying voltage via CNT gate electrodes significantly alters PL spectra at a location with CNT gate electrodes. PL imaging has revealed that image contrast from trions is linear along the CNT electrode underneath, consistent with 1D confinement of trions in response to the CNT local gating. The confinement width obtained from the PL image is 5.5 x 10^2 nm, consistent with nanoscale 1D confined trions with the diffraction limit broadening. This work has demonstrated electrical control of excitonic states at the nanoscale, leading to novel optoelectronic properties and exciton devices in the future.
