Two‐Dimensional Guanidine‐Based Hybrid Perovskites with Strong Dichroism for Multiwavelength Polarization‐Sensitive Detection

Lü, Lei; Ma, Yu; Wang, Jiaqi; Liu, Yi; Han, Shiguo; Liu, Xitao; Guo, Wuqian; Xu, Haojie; Luo, Junhua; Sun, Zhihua

doi:10.1002/chem.202100691

Cited by 15 publications

(3 citation statements)

References 51 publications

(105 reference statements)

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“…This finding indicates that polarization-sensitive photodetection primarily originates from structure-induced polarization-dependent light absorption. Remarkably, both the P and LDR abs metrics outperform those reported in previous organic PSPs, to the best of our knowledge (refer to Figure a). ,,,− We have depicted a clear polarization dependency of the photocurrent in Figure S16, ESI, and have plotted the corresponding angle-resolved normalized photocurrent curve in polar coordinates (Figure b). The photocurrent exhibits a peak when the polarization aligns with the c axial direction of the DTT-8 crystals and diminishes with an increase in the polarization angle, reaching a valley when perpendicular to the b axial direction.…”

Section: Resultssupporting

confidence: 57%

Molecularly Thin 2D Organic Single Crystals: A New Platform for High-Performance Polarization-Sensitive Phototransistors

Zhang,

Yang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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The inherent linear dichroism (LD), high absorption, and solution processability of organic semiconductors hold immense potential to revolutionize polarized light detection. However, the disordered molecular packing inherent to polycrystalline thin films obscures their intrinsic diattenuation, resulting in diminished polarization sensitivity. In this study, we develop filter-free organic polarizationsensitive phototransistors (PSPs) with both a high linear dichroic ratio (LDR) and exceptional photosensitivity utilizing molecularly thin dithieno[3,2-b:2′,3′-d]thiophene derivatives (DTT-8) two-dimensional molecular crystals (2DMCs) as the active layer. The orderly molecular packing in 2DMCs amplifies the inherent LD, and their molecular-scale thickness enables complete channel depletion, significantly reducing the dark current. As a result, PSPs with an impressive LDR of 3.15 and a photosensitivity reaching 3.02 × 10 6 are obtained. These findings present a practical demonstration of using the polarization angle as an encryption key in optical communication, showcasing the potential of 2DMCs as a viable and promising category of semiconductors for filter-free, polarization-sensitive photodetectors.

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Section: Resultssupporting

confidence: 57%

Molecularly Thin 2D Organic Single Crystals: A New Platform for High-Performance Polarization-Sensitive Phototransistors

Zhang,

Yang,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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“…The photodetector based on (BA)2(GA)Pb2I7 (Fig. 29a) has obvious anisotropic photocurrent in some different wavelengths of the visible band 876 . The PdSe2-based device, shown in Fig.…”

Section: D Polarization-sensitive Photodetectorsmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

325

119

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Research on two-dimensional (2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications.In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief background 物理化学学报 Acta Phys. -Chim. Sin. 2021, 37 (12), 2108017 (3 of 151) introduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials (PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.

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“…Low-dimensional structures, especially one-dimensional (1D) and two-dimensional (2D) structures, are also anisotropic atomic structures that could produce interesting anisotropies, such as anisotropic electronic structure, anisotropic carrier transport, and birefringence. − Recently, examples of low-dimensional perovskite materials have shown linear dichroism behaviors and outstanding anisotropic properties and exhibited more promising applications in polarized luminescence, polarized photon detection, and optical modulation. − As is known, the large single crystals have a minimal number of grain boundaries and fewer structural defects and therefore usually lead to enhanced performance. , Several 2D hybrid perovskite single crystals have been synthesized recently, showing excellent anisotropic photonic performance. , Recently, Zhang et al reported centimeter-sized 1D perovskite ( n -propylammonium)(methylammonium)SbBr 5 single crystals with excellent linear dichroic anisotropy . However, reports of large 1D perovskite single crystals have been limited, and the corresponding anisotropic property has therefore also not been demonstrated.…”

mentioning

confidence: 99%

Temperature-Dependent Luminescence and Anisotropic Optical Properties of Centimeter-Sized One-Dimensional Perovskite Trimethylammonium Lead Iodide Single Crystals

Yan

Xiao

et al. 2022

J. Phys. Chem. Lett.

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Low-dimensional hybrid halide perovskite materials with self-trapped exciton (STE) emissions and anisotropic properties are highly attractive for their great potential in many applications. However, to date, reports on large one-dimensional (1D) perovskite single crystals have been limited. Here, centimeter-sized 1D single crystals of trimethylammonium lead iodide (TMAPbI 3 ) with typical STE emission are synthesized by an antisolvent vaporassisted crystallization method. Thermal quenching and antiquenching with a high relative sensitivity of photoluminescence (PL) are observed and studied via temperature-dependent photoluminescence spectroscopy. Further analysis indicates that the temperature-dependent PL behaviors are influenced by the self-trapping of the free exciton and the migrations between self-trapped excitons and intermediate nonradiative states. The TMAPbI 3 single crystal also exhibits a linearly polarized emission and a large birefringence that is higher than those of commercial birefringent crystals. This 1D perovskite with high structural anisotropy has promise for applications in versatile optical-and luminescence-related fields.

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Two‐Dimensional Guanidine‐Based Hybrid Perovskites with Strong Dichroism for Multiwavelength Polarization‐Sensitive Detection

Cited by 15 publications

References 51 publications

Molecularly Thin 2D Organic Single Crystals: A New Platform for High-Performance Polarization-Sensitive Phototransistors

Molecularly Thin 2D Organic Single Crystals: A New Platform for High-Performance Polarization-Sensitive Phototransistors

Recent Progress on Two-Dimensional Materials

Temperature-Dependent Luminescence and Anisotropic Optical Properties of Centimeter-Sized One-Dimensional Perovskite Trimethylammonium Lead Iodide Single Crystals

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