Probing photoresponse of aligned single-walled carbon nanotube doped ultrathin MoS₂.

ABSTRACT: We report a facile method to produce ultrathin molybdenum disulfide (MoS₂) hybrids with polarized near-infrared (NIR) photoresponses, in which horizontally-aligned single-walled carbon nanotubes (SWNTs) are integrated with single- and few-layer MoS₂ through a two-step chemical vapor deposition process. The photocurrent generation mechanisms in SWNT-MoS₂ hybrids are systematically investigated through wavelength- and polarization-dependent scanning photocurrent measurements. When the incident photon energy is above the direct bandgap of MoS₂, isotropic photocurrent signals are observed, which can be primarily attributed to the direct bandgap transition in MoS₂. In contrast, if the incident photon energy in the NIR region is below the di

SUBMITTER: Wang R 

PROVIDER: S-EPMC6086608 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature