John Kouvetakis

TL;DR: The synthesis of a novel framework cyanide with composition LiBC4N4 (1) is described in this article, which consists of two interpenetrating diamond-like networks of BC4 and LiN4 tetrahedra linked by C−N bonds.

TL;DR: In this paper, the authors derived a quantitative description of the composition dependence of the lattice parameters of SixGe1−x and SixSnyGe 1−x−y binary data and derived dielectric functions indicating a band structure consistent with highly crystalline semiconductor materials of diamond symmetry.

TL;DR: First principles density functional theory is used to study the compositional dependence of the structural, elastic, electronic, and bonding properties of newly prepared SnxGe1-x alloys and compoun...

TL;DR: It is shown that Ge(1-x-y)Si(x)Sn(y) alloys serve as higher-gap barrier layers for the formation of light emitting structures based on Ge-Ge-Sn quantum wells grown on Si, thus representing a viable starting point en route to a complete four-junction photovoltaic device.

TL;DR: Ge/Si heterostructure diodes based on n++Si(100)/i-Ge/p-Ge and p++Si (100)/I-Ge/(p)-Ge stacks and intrinsic region thickness of ~350 and ~900 nm, respectively, were fabricated using a specially developed synthesis protocol that allows unprecedented control of film microstructure, morphology, and purity at complementary metal-oxide-semiconductor compatible conditions.