Polarization‐Sensitive Halide Perovskites for Polarized Luminescence and Detection: Recent Advances and Perspectives

Abstract

While halide perovskites (HPs) have achieved enormous success in the field of optoelectronic applications, much attention has been recently drawn to the unique polarization sensitivity of HPs, either intrinsic or extrinsic, which makes HPs a potential candidate for innovative applications in directly polarized luminescence and detection. Herein, the research status in the field of polarization‐sensitive HPs, including linear polarization and circular polarization, is comprehensively summarized. To evaluate the effectiveness of HPs in generating and detecting linearly or circularly polarized light, the principles and characterization methods of polarized luminescence and detection are introduced. Sequentially, the state‐of‐the‐art development of the strategies that induce the linear or circular polarization characteristics of HPs is systematically reviewed, based on which the application of polarization‐sensitive HPs in the field of polarization luminescence and detection are summarized. Moreover, the current challenges and opportunities are discussed, and prospects of the future development in this promising field are outlined.

Frontiers in circularly polarized luminescence: molecular design, self-assembly, nanomaterials, and applications

“…Sophisticated construction techniques for chiral nanostructures have been achieved in individual synthesis of nanocrystals [249,250], two-dimensional (2D) fabrication of either nanosheet [251] or large scale films [252,253] and 3D pyramidal [254], helical and dihedral geometrical [255] assembly of inorganic nanocrystals and so on [256,257]. Now days, the chiral inorganic nanomaterials with CPL have been drawing more and more attention owing to their huge potentials in 3D displays, information security, chiral identification, and optoelectronic devices and so on [1,3,10]. Similar to chiral inorganic nanomaterials, CPL-active inorganic materials can be classified into zero-dimensional (0D) [258] and 1D nanocrystals [259], 2D sheet and film structures [253], and 3D nanostructures, such as helical chiral inorganic nanostructures with CPL activity [166].…”

“…Recent breakthroughs in technological development have led to great progress in the field of CPL-active inorganic materials, in which the majorities focus on chiral structure fabrication, CPL generation and enhancement. Regarding the progress, the future advances of chiral materials can be summarized from different aspects in this field: (1) The further freedom to fabricate advanced and complex chiral structures with fine control in geometry and enantiomeric configuration is still in great demand. The biological, chemical and physical functions should be further designed and assembled for application purpose.…”

“…Polarization is one of the inherent and important properties of light, which is very important in display, remote sensing, target identification, information storage fields and so on [1][2][3][4]. Unlike the intensity and wavelength of light, polarization has the ability to distinguish the information of light from three dimensions [5].…”

Chiral Hybrid Perovskite Single‐Crystal Nanowire Arrays for High‐Performance Circularly Polarized Light Detection

“…Chiral hybrid perovskites (CHPs), [ 9 , 10 ] featured with handedness sensitive absorption induced by chiral organic ligands and superior optoelectronic properties originating from inorganic frameworks, [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ] are ideal candidates for the construction of high‐performance direct CPL detector. Over the past few years, thin‐film‐based CHPs photodetectors have enabled direct detection of light polarization states with enhanced responsivity; [ 18 , 19 , 20 , 21 , 22 ] however, the capability of these devices to distinguish CPL is still limited due to the introduction of impurities and intrinsic defect states during the rapid crystallization process. [ 23 ] With low defect density and long carrier diffusion length stemming from the long‐range crystallographic order, [ 24 , 25 , 26 , 27 , 28 ] high‐crystallinity CHP as active component affords an opportunity to detect CPL with high polarization discrimination ratio.…”

B,N-Embedded Double Hetero[7]helicenes with Strong Chiroptical Responses in the Visible Light Region

“…[1][2][3][4][5][6] Of particular interest is their potential as semiconducting materials for advanced chiral optoelectronic devices, such as circularly polarized light photodetectors, [7][8] for which strong chiroptical responses across a broad range of the visible spectrum are highly desirable. [9][10] However, most helicenes exhibit chiroptical activities mainly in the ultraviolet region, 11 thus calling for new design principles of helicene molecules. In recent years, enlarging the π-conjugated plane of helicenes and fusing multiple helicenes into a PAH core have led to a variety of elegant molecules that extend chiroptical responses to the visible spectral range.…”