Research paperExperimental GrowthExperimental CharacterizationComputational DFTTwisted MoSe₂ Homobilayer Behaving as a HeterobilayerArka Karmakar, Abdullah Al-Mahboob, Natalia Zawadzka, Mateusz Raczyński et al.2024·10.1021/nl501077m·arXiv:2404.15542AbstractHeterostructures (HSs) formed by transition-metal dichalcogenides (TMDCs) have shown promise in optoelectronic and photonic applications. This work studies an unconventional twisted MoSe₂ homobilayer formed by combining chemical vapor deposition (CVD) and mechanical exfoliation, exploiting a lattice mismatch and a large twist angle to suppress charge transfer and enable energy transfer. Optical and electron spectroscopy and density functional theory calculations are used to show a strong photoluminescence enhancement from the heterostructure area, indicating that the electronically decoupled homobilayer behaves like a heterobilayer.Read more
Isolated CVD-grown monolayer MoSe₂ triangles on sapphire.3 characterizations2 properties16 figuresExperimentalMoSe₂Studied MaterialExpand
Mechanically exfoliated MoSe₂ flake on SiO₂/Si substrate used as the top layer in the twisted homobilayer.3 characterizations1 property16 figuresExperimentalMoSe₂Studied MaterialExpand
Twisted MoSe₂ homobilayer heterostructure formed by a CVD-grown bottom layer and an exfoliated top layer.4 characterizations6 properties17 figuresExperimentalMoSe₂Studied MaterialExpand
Research paperExperimental GrowthExperimental CharacterizationComputational DFTTwisted MoSe₂ Homobilayer Behaving as a HeterobilayerArka Karmakar, Abdullah Al-Mahboob, Natalia Zawadzka, Mateusz Raczyński et al.2024·10.1021/nl501077m·arXiv:2404.15542AbstractHeterostructures (HSs) formed by transition-metal dichalcogenides (TMDCs) have shown promise in optoelectronic and photonic applications. This work studies an unconventional twisted MoSe₂ homobilayer formed by combining chemical vapor deposition (CVD) and mechanical exfoliation, exploiting a lattice mismatch and a large twist angle to suppress charge transfer and enable energy transfer. Optical and electron spectroscopy and density functional theory calculations are used to show a strong photoluminescence enhancement from the heterostructure area, indicating that the electronically decoupled homobilayer behaves like a heterobilayer.Read more
Isolated CVD-grown monolayer MoSe₂ triangles on sapphire.3 characterizations2 properties16 figuresExperimentalMoSe₂Studied MaterialExpand
Mechanically exfoliated MoSe₂ flake on SiO₂/Si substrate used as the top layer in the twisted homobilayer.3 characterizations1 property16 figuresExperimentalMoSe₂Studied MaterialExpand
Twisted MoSe₂ homobilayer heterostructure formed by a CVD-grown bottom layer and an exfoliated top layer.4 characterizations6 properties17 figuresExperimentalMoSe₂Studied MaterialExpand
Research paperExperimental GrowthExperimental CharacterizationComputational DFTTwisted MoSe₂ Homobilayer Behaving as a HeterobilayerArka Karmakar, Abdullah Al-Mahboob, Natalia Zawadzka, Mateusz Raczyński et al.2024·10.1021/nl501077m·arXiv:2404.15542AbstractHeterostructures (HSs) formed by transition-metal dichalcogenides (TMDCs) have shown promise in optoelectronic and photonic applications. This work studies an unconventional twisted MoSe₂ homobilayer formed by combining chemical vapor deposition (CVD) and mechanical exfoliation, exploiting a lattice mismatch and a large twist angle to suppress charge transfer and enable energy transfer. Optical and electron spectroscopy and density functional theory calculations are used to show a strong photoluminescence enhancement from the heterostructure area, indicating that the electronically decoupled homobilayer behaves like a heterobilayer.Read more
Isolated CVD-grown monolayer MoSe₂ triangles on sapphire.3 characterizations2 properties16 figuresExperimentalMoSe₂Studied MaterialExpand
Mechanically exfoliated MoSe₂ flake on SiO₂/Si substrate used as the top layer in the twisted homobilayer.3 characterizations1 property16 figuresExperimentalMoSe₂Studied MaterialExpand
Twisted MoSe₂ homobilayer heterostructure formed by a CVD-grown bottom layer and an exfoliated top layer.4 characterizations6 properties17 figuresExperimentalMoSe₂Studied MaterialExpand
Research paperExperimental GrowthExperimental CharacterizationComputational DFTTwisted MoSe₂ Homobilayer Behaving as a HeterobilayerArka Karmakar, Abdullah Al-Mahboob, Natalia Zawadzka, Mateusz Raczyński et al.2024·10.1021/nl501077m·arXiv:2404.15542AbstractHeterostructures (HSs) formed by transition-metal dichalcogenides (TMDCs) have shown promise in optoelectronic and photonic applications. This work studies an unconventional twisted MoSe₂ homobilayer formed by combining chemical vapor deposition (CVD) and mechanical exfoliation, exploiting a lattice mismatch and a large twist angle to suppress charge transfer and enable energy transfer. Optical and electron spectroscopy and density functional theory calculations are used to show a strong photoluminescence enhancement from the heterostructure area, indicating that the electronically decoupled homobilayer behaves like a heterobilayer.Read more
Isolated CVD-grown monolayer MoSe₂ triangles on sapphire.3 characterizations2 properties16 figuresExperimentalMoSe₂Studied MaterialExpand
Mechanically exfoliated MoSe₂ flake on SiO₂/Si substrate used as the top layer in the twisted homobilayer.3 characterizations1 property16 figuresExperimentalMoSe₂Studied MaterialExpand
Twisted MoSe₂ homobilayer heterostructure formed by a CVD-grown bottom layer and an exfoliated top layer.4 characterizations6 properties17 figuresExperimentalMoSe₂Studied MaterialExpand