Circularly Polarized Photodetectors Based on Chiral Materials: A Review

Zhang, Can; Wang, Xiaohong; Qiu, Longzhen

doi:10.3389/fchem.2021.711488

Cited by 56 publications

(61 citation statements)

References 109 publications

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“…However, such bulky and complicated optical systems by using free-space polarizer have intrinsic drawbacks such as limited speed, limited accuracy, and incomplete polarization state detection 9 . Recent advances in low-dimensional nanophotonic technologies have unveiled fascinating approaches to develop the next-generation polarimeters 10 , 11 . As a potential candidate for the next-generation compact polarimeters, on-chip polarization-sensitive photodetectors have been widely studied recently owing to their advantages including high level of miniaturization and ultrahigh-density integration.…”

Section: Introductionmentioning

confidence: 99%

On-chip mid-infrared photothermoelectric detectors for full-Stokes detection

et al. 2022

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On-chip polarimeters are highly desirable for the next-generation ultra-compact optical and optoelectronic systems. Polarization-sensitive photodetectors relying on anisotropic absorption of natural/artificial materials have emerged as a promising candidate for on-chip polarimeters owing to their filterless configurations. However, these photodetectors can only be applied for detection of either linearly or circularly polarized light, not applicable for full-Stokes detection. Here, we propose and demonstrate three-ports polarimeters comprising on-chip chiral plasmonic metamaterial-mediated mid-infrared photodetectors for full-Stokes detection. By manipulating the spatial distribution of chiral metamaterials, we could convert polarization-resolved absorptions to corresponding polarization-resolved photovoltages of three ports through the photothermoelectric effect. We utilize the developed polarimeter in an imaging demonstration showing reliable ability for polarization reconstruction. Our work provides an alternative strategy for developing polarization-resolved photodetectors with a bandgap-independent operation range in the mid-infrared.

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Section: Introductionmentioning

confidence: 99%

On-chip mid-infrared photothermoelectric detectors for full-Stokes detection

et al. 2022

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“…[83] Later on, similar approaches were reconfirmed by Bajpai et al, and they found that the device performance could be further improved by optimizing the layer thickness and alkyl chain length of discotic liquid crystal. [84] Considering the unique macroscopic helicoidal structure and the tunable helix pitch of cholesteric liquid crystals, they are extensively applied in reflectors, [85] optical polarizers, [86] shutters, [87] and laser applications. [88] With regard to organic solar cells, cholesteric liquid crystals were developed as an additive in bulk heterojunction layer to improve the performance of organic solar cells.…”

Section: Nonvolatile Memory Applicationsmentioning

confidence: 99%

“…Considering the unique macroscopic helicoidal structure and the tunable helix pitch of cholesteric liquid crystals, they are extensively applied in reflectors, [ 85 ] optical polarizers, [ 86 ] shutters, [ 87 ] and laser applications. [ 88 ] With regard to organic solar cells, cholesteric liquid crystals were developed as an additive in bulk heterojunction layer to improve the performance of organic solar cells.…”

Section: Organic Photovoltaics Applicationsmentioning

confidence: 99%

Organic liquid crystals in optoelectronic device applications: Field‐effect transistors, nonvolatile memory, and photovoltaics

Lin

et al. 2022

J Chinese Chemical Soc

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With the growing demands in flexible electronics, the development of plastic and organic materials has gained increased interest. In this focus review, the design concepts and recent advances of organic liquid crystalline materials in optoelectronic devices were introduced. Thermotropic liquid crystalline materials are categorized into three types: calamitic, discotic, and cholesteric types according to the structures of rod‐like, disk‐like, and chiral rod‐like molecules, respectively. Numerous liquid crystalline materials have been successfully incorporated in organic electronic devices. Notably, smectic liquid crystals hold great promise as semiconducting channel, floating gate electret, and charge transporting interlayer in field‐effect transistors, nonvolatile memory, and photovoltaics, respectively. This review sheds light on the great potential and importance of the organic liquid crystalline material for optoelectronic device applications.

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“…A concept that recently gained momentum in the metal halide perovskite literature is the use of chiral ammonium cations in order to induce novel functionality in HMHs. 5,[15][16][17][18][19][20] The successful transfer of chirality from the cation to the HMH as a whole would yield a material that combines the favorable electronic properties of the inorganic material with the chirality of the organic compound, rendering chiral HMHs an exceptionally attractive candidate for the generation and detection of circularly polarized light.…”

Section: Progress and Potentialmentioning

confidence: 99%

“…Several chiral organic materials, such as small molecules and conjugated polymers, have been demonstrated to efficiently differentiate between left-and right-handed circularly polarized light in photodetectors. 5 Instead, in inorganic materials, circularly polarized emission only occurs when the symmetry of the system is lowered by…”

Section: Introductionmentioning

confidence: 99%