Efficient third harmonic generation from FAPbBr₃ perovskite nanocrystals

Abstract

The development of versatile nanostructured materials with enhanced nonlinear optical properties is relevant for integrated and energy efficient photonics. In this work, we report third harmonic generation from organic lead...

Advances of Nonlinear Photonics in Low‐Dimensional Halide Perovskites

“…Besides the 2D layered perovskites, recently, the free standing stong confined FAPbBr3 QDs also suggested notable excitonic enhanced THG (Figure 8E,F). [113] At the resonance of the excitonic absorption peak, the maximal third-order nonlinear susceptibility is up to1.46 × 10 −19 m 2 V −2 . Therefore, the exciton enhanced THG can be regarded as a universal phenomenon for the systems with strong confinement.…”

“…Copyright 2018, ACS Publications. E,F) Reproduced with permission [113]. Copyright 2020, The Royal Society of Chemistry.…”

On the crystal structure thermal evolution of formamidinium lead tribromide, CH(NH2)2PbBr3

“…Upon modeling the FA unit as a rigid body, two options were tested: (a) limiting the FA position to a unique displacement along [100] direction and (b) allowing the cation to take the most favorable positions. In the first case, the mass center of FA is located at (x, 1 2 , 1 2 ) with the molecule aligned along the [100] direction (Fig. 2d).…”

“…3a. The tetragonal structure is well defined in the P4/mbm space group, where the Pb atoms are placed in 2a (0, 0, 0) whereas Br1 and Br2 atoms are located at 2b (0, 0, 1 2 ) and 4g (x, y, 0) Wyckoff sites, respectively. The C and N atoms forming the organic unit are in 4f ( 12 , 0, z) and 8k (x, x+ 1 2 , z) sites, respectively.…”

“…In recent years, hybrid organic-inorganic perovskites have attracted broad interests due to their outstanding properties for solar-cell applications, which have experienced a fast development. [1][2][3][4][5][6][7][8] An energy conversion of over 22% and high carrier mobility, along with their low production costs, are the reasons behind the promotion of these promising materials for optoelectronic applications. 9 Hybrid perovskites follow the general formula ABX 3 , where B metals and X halogens constitute BX 6 octahedra that establish a three-dimensional framework, forming cages occupied by the organic A cations.…”