An Organic Chiroptical Detector Favoring Circularly Polarized Light Detection from Near‐Infrared to Ultraviolet and Magnetic‐Field‐Amplifying Dissymmetry in Detectivity (Adv. Mater. 23/2023)

Hu, Renjie; Lu, Xiangqian; Hao, Xiaotao; Qin, Wei

doi:10.1002/adma.202370167

Cited by 4 publications

(3 citation statements)

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“…Furthermore, the responsivity ( R ) and detection rate ( D *) of the device were calculated under polarized light to evaluate detection parameters. [ 49–51 ] According to the results (Figure S17, Supporting Information), the maximum value of R is ≈3.3 mA W −1 , and D * reaches 7.4 × 10 11 Jones considering the dark current as the primary yawp. This thought‐provoking behavior may attribute to the saturation of the trap states under the higher flux during the Auger process or the decrease of the photo‐induced carrier lifetime.…”

Section: Resultsmentioning

confidence: 99%

Realization of High‐Performance Self‐Powered Polarized Photodetection with Large Temperature Window in a 2D Polar Perovskite

Wang,

Wu,

et al. 2023

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Polarization photodetection taking advantage of the anisotropy of 2D materials shines brilliantly in optoelectronic fields owing to differentiating optical information. However, the previously reported polarization detections are mostly dependent on external power sources, which is not conducive to device integration and energy conservation. Herein, a 2D polar perovskite (CBA)2CsPb2Br7 (CCPB, CBA = 4‐chlorobenzyllamine) has been successfully synthesized, which shows anticipated bulk photovoltaic effect (BPVE) with an open‐circuited photovoltage up to ≈0.2 V. Devices based on CCPB monomorph fulfill a fascinating self‐powered polarized photodetection with a large polarization ratio of 2.7 at room temperature. Moreover, CCPB features a high phase‐transition temperature (≈475 K) which prompts such self‐powered polarized photodetection in a large temperature window of device operation, since BPVE generated by spontaneous polarization can only exist in the polar structure prior to the phase transition. Further computational investigation reveals the introduction of CBA+ with a large dipole moment contributes to quite large polarization (17.5 µC cm−2) and further super high phase transition temperature of CCPB. This study will promote the application of 2D perovskite materials for self‐powered polarized photodetection in high‐temperature conditions.

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Section: Resultsmentioning

confidence: 99%

Realization of High‐Performance Self‐Powered Polarized Photodetection with Large Temperature Window in a 2D Polar Perovskite

Wang,

Wu,

et al. 2023

Small

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“…An increasing number of studies appear to show that magnitude and sign of g ph are not just dependent on the g abs . 43,46,47 In the chiral photodiodes based on chiral DPP6T donor and achiral PC 61 BM acceptor, we found that the g SC was thickness-dependent, even though the active layer exhibited a thickness-independent g abs (Figure 13c, d). 32 The amplified g SC relative to g abs can be attributed to the position differences of exciton generation rate and absorbed energy across the active layer upon alternating illumination of L-and R-CPL.…”

Section: Chiral Assemblies Interact With Chiral Electromagnetic Wavesmentioning

confidence: 88%

“…This further promotes these detectors show promising g SC / g ph with desired photodetection performance (Supporting Information Table 1). − ,,− As there have been several excellent reviews detailing the CPL detection recently, , in this section, we emphasize the relations between supramolecular chirality of active materials and the discrimination ability of CPL detectors.…”

Section: Chiral Assemblies Interact With Substances and Lightmentioning

confidence: 99%

Chiral Conjugated Molecular Assemblies Interact with Substances and Light

Yang,

Liu,

Wei

2024

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations * sı Supporting Information CONSPECTUS: Chirality has been relevant to numerous core scientific topics over the past century. Recently, the value of chirality in artificial functional materials has been recognized and investigated intensively.Functional materials with chirality demonstrate some characteristic properties lacking in their achiral counterparts. Specifically, in chiral materials, optical rotatory dispersion, circular dichroism (CD), circularly polarized luminescence, nonlinear optical effect, and chiral-induced spin selectivity have been observed. These unique properties have recently stimulated increasing research interest in circularly polarized light (CPL) detection, circularly polarized photoluminescence and electroluminescence, chiral spintronic devices, etc. Generally speaking, the interdisciplinary chirality and optoelectronics will not only promise new opportunities for fundamental scientific research but also show broad application prospects in 3D display, drug screening, quantum computing and communication, information encryption transmission and processing, etc. In this context, chiral organic optoelectronic materials provide an appealing platform for investigation. In addition to the outstanding optical and electronic properties, chirality can be easily introduced into organic optoelectronic materials via either valence or nonvalence chemistry and can be transferred from the molecular level to the supramolecular, nano/micro, and even macro levels by molecular self-assembly and supramolecular chemistry. Moreover, chiral organic molecules are compatible with most cutting-edge processing techniques, such as vacuum evaporation, spin-coating, blade coating, roll-to-roll, etc., for various types of devices. These optoelectronic devices, including organic solar cells (OSCs), organic field-effect transistors (OFETs), and organic light-emitting diodes (OLEDs), can be manufactured on either rigid or flexible substrate, covering device size from molecular scale (single molecule device) to nano/micro and large area in square meter scale. It is thus worthwhile to review the role of chirality in organic optoelectronic materials and devices to promote further development of chiral organic optoelectronics.In this Account, we intend to showcase the diverse functions empowered by the intriguing properties of chiral organic conjugated molecular assemblies. We will first discuss how chirality affects molecular packing in chiral organic assemblies, from which we will show chirality not only helps elucidate the intermolecular interactions but also impacts hierarchical structures in matters. We then expand the discussion to the interactions between chiral assemblies and guest substances, complicated helical motion, and molecular chirality recognition achieved at nano, micro, or even macro level. We highlight our recent advances in the interactions between chiral assemblies and chiral light. This generates the field of direct CPL detection, and the basic principles in this f...

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Chiral organic semiconducting materials for next-generation optoelectronic sensors

Ahn,

Lee,

Song

et al. 2023

Device

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An Organic Chiroptical Detector Favoring Circularly Polarized Light Detection from Near‐Infrared to Ultraviolet and Magnetic‐Field‐Amplifying Dissymmetry in Detectivity (Adv. Mater. 23/2023)

Cited by 4 publications

References 0 publications

Realization of High‐Performance Self‐Powered Polarized Photodetection with Large Temperature Window in a 2D Polar Perovskite

Realization of High‐Performance Self‐Powered Polarized Photodetection with Large Temperature Window in a 2D Polar Perovskite

Chiral Conjugated Molecular Assemblies Interact with Substances and Light

Chiral organic semiconducting materials for next-generation optoelectronic sensors

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