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7 papers · 2 filters
Tunable Electronic Band Structures and Zero-Energy Modes of Heterosubstrate-induced Graphene Superlattices
Xiong Fan, Wenjun Huang, Tianxing Ma +1
We propose a tunable electronic band gap and zero-energy modes in periodic heterosubstrate-induced graphene superlattices. Interestingly, there is an approximate linear relation be…
Air passivation of chalcogen vacancies in two-dimensional semiconductors
Yuanyue Liu, Pauls Stradins, Su-Huai Wei
Defects play important roles in semiconductors (SCs). Unlike those in bulk SCs, defects in two-dimensional (2D) SCs are exposed to the surrounding environment, which can potentiall…
Two-dimensional octagon-structure monolayer of nitrogen group elements and the related nano-structures
Yu Zhang, Jason Lee, Wei-Liang Wang +1
In the purpose of expanding the family of two-dimensional materials, we predict the existence of two-dimensional octa-structure of nitrogen group elements that are composed of squa…
Intrinsic Instability of the Hybrid Halide Perovskite Semiconductor CH3NH3PbI3
Yue-Yu Zhang, Shiyou Chen, Peng Xu +4
The organic-inorganic hybrid perovskite CH3NH3PbI3 has attracted significant interest for its high performance in converting solar light into electrical power with an efficiency ex…
Electronic band gaps and transport properties in periodically alternating mono- and bi-layer graphene superlattices
Xiong Fan, Wenjun Huang, Tianxing Ma +2
We investigate the electronic band structure and transport properties of periodically alternating mono- and bi-layer graphene superlattices (MBLG SLs). In such MBLG SLs, there exis…
Tuning Optical Properties of Transparent Conducting Barium Stannate by Dimensional Reduction
Yuwei Li, Lijun Zhang, Yanming Ma +1
We report calculations of the electronic structure and optical properties of doped -type perovskite BaSnO3 and layered perovskites. While doped BaSnO retains its transparenc…