Can I read Disentangling ElectronPhonon Coupling and Thermal Expansion Effects in the Band Gap Renormalization of Perovskite Nanocrystals on EtoBox?

Disentangling ElectronPhonon Coupling and Thermal Expansion Effects in the Band Gap Renormalization of Perovskite Nanocrystals is a scholarly article available to read on EtoBox.

What is Disentangling ElectronPhonon Coupling and Thermal Expansion Effects in the Band Gap Renormalization of Perovskite Nanocrystals about?

Methods ## Sample preparation MAPbI 3 nanocrystal synthesis consists of a one-step process already reported elsewhere [1]. The method involves the preparation, at room temperature, of a solution of the perovskites precursors (MAI + PbCl 2 ), in a molar ratio of 3 to 1, in dimethylformamide (DMF). The solution is then deposited by spin coating on a 1-μm thick porous layer composed of 30 nm silica nanoparticles. In this way, the precursors can diffuse through the empty spaces between the silica particles and, with subsequent heat treatment the perovskite crystallizes in the accessible voids. In the case of MAPbI 3 bulk films, the solution is directly deposited on a glass substrate previously cleaned with oxygen plasma. Preparing nanocrystals of different sizes is carried out by diluting the precursor solution at different concentrations. Previously, the porous silica matrix is obtained by repeated dip coating deposition of a colloidal dispersion of the SiO 2 nanoparticles (Ludox, 34% in water). The stratification of these nanoparticles, up to a thickness of about 1 micron, provides a matrix with a porosity of 40% and pore diameters of 12-16 nm. The preparation of the porous silica fi

Publisher

American Chemical Society (ACS)