One-dimensional luminescent tetrabutylammonium lead halide perovskite synthesized with deep eutectic solvents

Abstract

One-dimensional (1D) luminescent tetrabutylammonium lead halides perovskite (TBA)4Pb5Br14-xClx·HBr(Cl)·2H2O and TBAPbI3 (TBA=Tetrabutylammonium) were first synthesized with environmental-friendly deep eutectic solvent (DES). Temperature-dependent photoluminescence (PL) and differential scanning calorimetry (DSC) show that...

Green synthesis of highly stable CsPbBr3 perovskite nanocrystals using natural deep eutectic solvents as solvents and surface ligands

“…30 As the most promising alternative to toxic organic solvents, NADESs have been applied successfully in the fields of catalysis, 31,32 extraction, 33,34 electrochemistry 35,36 and organic synthesis. 37,38 Furthermore, the -COOH, -OH, and -NH 2 groups in these natural compounds can coordinate with metal ions, which provides feasibility for using NADESs as ligands. To the best of our knowledge, NADESs used simultaneously as solvents and surface ligands in the synthesis of PNCs have not been reported so far.…”

Photophysical properties of tetrabutylammonium metal chlorides with different inorganic frameworks

“…Above 100 K, the PL intensity undergoes thermal quenching due to the nonradiative recombination of thermal activation. 6 As shown in Fig. 3b, the fitted coupling constant g LO for phonon correlation is 226 meV.…”

“…5 In recent years, the optical properties of low-dimensional metal halides have attracted much attention, mainly due to selftrapped excitons (STEs) caused by strong electron-phonon interactions. 6 In particular, the diversity of large organic ammonium cationic ligands allows the structural dimensionality to be controlled, which further enriches their optoelectronic properties. 7 However, most studies have specialized in the modulation of the inorganic framework to improve the luminescent properties of low-dimensional metal halides, while the study of the optical properties of organic cations has lagged far behind.…”

“…As for the low-dimensional metal halides (TBA)CuCl 2 and (TBA) 4 Pb 5 Br 14 ÁHBrÁ2H 2 O, the PL originates from STEs, and shows similar temperature-dependent PL characteristics as for SC-Pb. 6,22 The formation of STEs states usually relates to lattice distortion, and a potential barrier between the free excitons (FEs) and STEs states with an existing specific distorted structure. 23 Therefore, FEs have higher thermal activation energy when the temperature increases from 80 to 100 K, which makes it easier for the FEs to cross the potential barrier to realize strong STEs emission.…”

“…5 In recent years, the optical properties of low-dimensional metal halides have attracted much attention, mainly due to self-trapped excitons (STEs) caused by strong electron–phonon interactions. 6 In particular, the diversity of large organic ammonium cationic ligands allows the structural dimensionality to be controlled, which further enriches their optoelectronic properties. 7…”