Kinfai Tse

TL;DR: In this article, the detailed crystallization process of mixed perovskites during spin-coating is revealed by in situ grazing-incidence wide-angle X-ray scattering measurements, and three phase-formation stages are identified: I) precursor solution; II) hexagonal δ-phase (2H); and III) complex phases including hexagonal polytypes (4H, 6H), MAI-PbI2 -DMSO intermediate phases, and perovsite α-phase.

TL;DR: A review of the historical development of co-doping can be found in this article, where the effects of contamination and surfactants that can explain the general mechanisms of Co-Doping are discussed.

TL;DR: In this article, the authors used a pseudo-hydrogen passivation method to estimate the dangling bond energy and calculate the polar surfaces of ZnO and GaN, based on pseudo chemical potentials obtained from a set of tetrahedral clusters or simple pseudo-molecules, using density functional theory approaches.

TL;DR: In this paper, a pseudo-hydrogen passivation method was proposed to calculate the surface energy of polar surfaces of semiconductors, using density functional theory approaches, and the energy contribution from pseudo hydrogen was calculated using either a pseudo molecule method or a tetrahedral cluster method.

TL;DR: In this article, the authors used a pseudo-hydrogen passivation method to estimate the dangling bond energy and calculate the polar surfaces of ZnO and GaN, based on the pseudo chemical potentials obtained from a set of tetrahedral clusters or simple pseudo-molecules.