Single Crystal Growth of Hybrid Lead Bromide Perovskites Using a Spin-Coating Method

Abstract

Synthesis and studies of single crystals of hybrid perovskite are important for achieving a better understanding of the optoelectronic phenomena occurring in this material and for improving ongoing applications. Here, we report on the growth of micrometer-size single crystals of methylammonium lead bromide (MAPbBr 3 ) using the spin coating deposition method on a quartz substrate. We studied the influence of the rotation speed and the use of three different additives N -cyclohexyl-2-pyrrolidone, dimethyl sulfoxide, and 4- tert -butylpyridine on the crystal size and shape. The introduction of an additive in the precursor solution is revealed to be very useful for obtaining crystals with well-defined geometries and for decreasing the amount of defects. In this way, high-quality single crystals that sustain optical resonating modes were obtained and characterized by transmittance and photoluminescence measurements.

Intrinsic Magnetic Order of Chemically Exfoliated 2D Ruddlesden–Popper Organic–Inorganic Halide Perovskite Ultrathin Films

“…This is quite surprising because self‐assembly during spin coating can produce single crystal growth on amorphous silicon oxide rather than single crystal substrates. [ 46 ]…”

“…This is quite surprising because self-assembly during spin coating can produce single crystal growth on amorphous silicon oxide rather than single crystal substrates. [46] Another combination of MeOH and AcN solvents is also investigated, where AcN has relatively lower polarity with the highest dielectric constant. The relative humidity during sample synthesis was about 28%.…”

2D Perovskite Single Crystals for Photodetectors: From Macro‐ to Microscale

“…Garcia‐Aboal et al synthesized MAPbBr 3 2D single crystals of several micrometers in length by controlling the rotational speed of spin coating and adding different additives. [ 74 ] Gao et al also investigated the effect of adding different concentrations of benzophenone (BP) to precursors of perovskite. [ 75 ] Moreover, Abe et al prepared different types of perovskite single crystals with a size of 5–30 μm on a low hydrophilic surface (Figure 7b).…”

Organic Molecule Assisted Growth of Perovskite Films Consisting of Square Grains by Surface-Confined Process

“…The unfavorable thickness of bulk perovskite single crystals and the difficulties in the preparation of large-area films limit the development of perovskite single-crystal optoelectronic devices [ 24 , 26 , 27 , 29 , 30 ]. In recent years, researchers have prepared perovskite films composed of single crystals by introducing organic molecules to regulate the growth of perovskite during the spin coating [ 7 , 31 , 32 , 33 , 34 ]. Gao et al [ 34 ] reported a high-quality MAPbBr 3 film consisting of micron-scale single crystals by introducing benzophenone as a crystallization agent.…”