First-principles investigations of the controllable electronic properties and contact types of type II MoTe/MoS van der Waals heterostructures.

Two-dimensional (2D) van der Waals (vdW) heterostructures are considered as promising candidates for realizing multifunctional applications, including photodetectors, field effect transistors and solar cells. In this work, we performed first-principles calculations to design a 2D vdW MoTe/MoS heterostructure and investigate its electronic properties, contact types and the impact of an electric field and in-plane biaxial strain. We find that the MoTe/MoS heterostructure is predicted to be structurally, thermally and mechanically stable.

Electric field tunability of the electronic properties and contact types in the MoS/SiH heterostructure.

The generation of layered heterostructures with type-II band alignment is considered to be an effective tool for the design and fabrication of a highly efficient photocatalyst. In this work, we design a novel type-II MoS/SiH HTS and investigate its atomic structure, electronic properties and contact types. In the ground state, the MoS/SiH HTS is proved to be structurally and mechanically stable.

Coenzyme Q10 production in a 150-l reactor by a mutant strain of Rhodobacter sphaeroides.

For the commercial production of CoQ(10), batch-type fermentations were attempted in a 150-l fermenter using a mutant strain of R. sphaeroides. Optimum temperature and initial aeration rate were found to be 30 degrees C and 2 vvm, respectively.