Advances of Nonlinear Photonics in Low‐Dimensional Halide Perovskites

Abstract

Hybrid halide perovskites emerging as a highly promising class of functional materials for semiconductor optoelectronic applications have drawn great attention from worldwide researchers. In the past few years, prominent nonlinear optical properties have been demonstrated in perovskite bulk structures indicating their bright prospect in the field of nonlinear optics (NLO). Following the surge of 3D perovskites, more recently, the low‐dimensional perovskites (LDPs) materials ranging from two‐, one‐, to zero‐dimension such as quantum‐wells or colloidal nanostructures have displayed unexpectedly attractive NLO response due to the strong quantum confinement, remarkable exciton effect, and structural diversity. In this perspective, the current state of the art is reviewed in the field of NLO for LDP materials. The relationship between confinement effect and NLO is analyzed systematically to give a comprehensive understanding of the function of dimension reduction. Furthermore, future directions and challenges toward the improvement of the NLO in LDP materials are discussed to provide an outlook in this rapidly developing field.

Highly luminescent broadband phosphors based on acid solvent coordinated two-dimensional layered tin-based perovskites

“…Lead halide perovskites have attracted extensive attention and made great progress in semiconducting materials, such as photodetectors, 1 light-emitting diodes (LEDs), 2–6 tuneable lasers, 7,8 nonlinear optics, 9 solar cells 10–12 and visible light communication, 13 owing to their excellent properties including structural flexibility, high photoluminescence quantum yields (PLQYs) and broad absorption bands. However, the toxicity and long-term contamination of the human body of Pb remain to be resolved.…”

Nonlinear Infrared Photodetection Based on Strong Nondegenerate Two‐Photon Absorption of Perovskite Single Crystal

“…Second, replacing MAPB perovskite with another material having smaller bandgap (e.g., MAPbI 3 ) or strong quantum confinement (e.g., 2D layered perovskites) may give rise to a stronger ND‐TPA due to the bandgap shrinkage or strong excitonic effects. [ 3 ] The responsivity can be further boosted using a nanophotonic structure which enhances the local field. [ 19,37 ] Last but not least, we note the scheme is intrinsically more sensitive in detecting mid‐infrared photons at a high repetition rate.…”

“…Halide perovskites have shown great promise for applications in photovoltaic and optoelectronic devices, which is attributed to their unique and prominent photoelectric properties like long carrier lifetime/diffusion length, high defect tolerance, strong light absorption, etc. Recently, there are also growing interests in the nonlinear optical properties of perovskites, [1][2][3] e.g., second harmonic generation, [4,5] two-photon absorption pyroelectric/thermopile infrared detectors. The sensitivity may be further optimized by choosing proper photon energy, photodiode, laser repetition rate, and low-dimensional perovskites, which may reach performance that is better or comparable to commercially available high-performance infrared semiconductor detectors.…”

“…Halide perovskites have shown great promise for applications in photovoltaic and optoelectronic devices, which is attributed to their unique and prominent photoelectric properties like long carrier lifetime/diffusion length, high defect tolerance, strong light absorption, etc. Recently, there are also growing interests in the nonlinear optical properties of perovskites, [ 1–3 ] e.g., second harmonic generation, [ 4,5 ] two‐photon absorption (TPA), [ 6 ] higher‐order harmonic generation, [ 7 ] and multiphoton absorption, etc. For instance, methylammonium lead bromide (MAPbBr 3 , hereafter denoted as MAPB) single crystal has been demonstrated to possess strong TPA coefficients of around 8 cm GW −1 , [ 6,8 ] which make them potential candidates for many nonlinear optical applications such as nonlinear photodetector, [ 6 ] optical modulator, [ 9 ] bio‐imaging, [ 10 ] and two‐photon pumped laser, [ 11,12 ] etc.…”

Insight into the photoelectrical properties of metal adsorption on a two-dimensional organic–inorganic hybrid perovskite surface: theoretical and experimental research

“…(4-FBA) 2 MAPb 2 I 7 was synthesized according to the reported procedure. 24 (4-FBA) 2 , Pb 2 I 4 and MAI 3 (1 M : 1 M : 1 M) were dissolved in a mixed solvent of N , N -dimethylformamide (DMF, Aldrich Co.) and dimethyl sulfoxide (DMSO, Aldrich Co.) as the precursor solution, and stirred at 80 °C for 2 h.…”