Ghada H. Ahmed

TL;DR: This work develops an in situ doping approach for colloidal CsPbBr3 perovskite NCs with heterovalent Bi3+ ions by hot injection to precisely tune their band structure and excited-state dynamics and finds that doping increases the energy difference between states of the molecular acceptor and the donor moieties, subsequently facilitating the interfacial CT process.

TL;DR: In this paper, a dual-surface treatment using trivalent metal ion salts (YCl3) was proposed to enhance the photoluminescence quantum yield (PLQY) of CsPbCl3 perovskite nanocrystals.

TL;DR: This work reveals the specific nature of the material's electronic transitions by realizing monodisperse colloidal nanocrystals of hexagonal-phase Cs3Bi2X9 perovskites, which afford well-resolved PL features and proposes an exciton recombination process involving both indirect and direct transitions simultaneously.

TL;DR: In this article, the authors demonstrate dominant photoluminescence quenching/enhancing centers both in the bulk and on the surface of Bi3+/Ce3+-doped CsPbBr3 by calculating the dopant defect formation energies and charge-transition levels using high-level density functional theory.

TL;DR: In this paper, the introduction of pyridine during the synthesis of methylammonium lead bromide (MAPbBr3) perovskite nanocrystals can transform threedimensional (3D) cubes into two-dimensional (2D) nanostructures.