Enhanced optoelectronic properties of a mercury cadmium telluride based double heterojunction photodetector for terahertz applications

Devarakonda, Vijayakumar; Pandey, Amritanshu; Chakrabarti, P.

doi:10.1016/j.ijleo.2021.167947

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…[1][2][3] Nowadays, industrial MIR detectors are mainly based on the mercury cadmium telluride (MCT, HgCdTe), palladium sulfide (PdS), and III-V quantum-well/dot (QWIP/QWID). [4,5] However, MCT and PdS detectors suffer from the high toxicity of heavy metals, and QWIP/QWID detectors require cryogenic working conditions. [6] DOI: 10.1002/admt.…”

Section: Introductionmentioning

confidence: 99%

“…[ 1–3 ] Nowadays, industrial MIR detectors are mainly based on the mercury cadmium telluride (MCT, HgCdTe), palladium sulfide (PdS), and III‐V quantum‐well/dot (QWIP/QWID). [ 4,5 ] However, MCT and PdS detectors suffer from the high toxicity of heavy metals, and QWIP/QWID detectors require cryogenic working conditions. [ 6 ] Although these detectors can show a respectable response in IR detection, other issues, such as high‐cost fabrication and incompatible fabrication with the complementary metal‐oxide‐semiconductor (CMOS) technique, also hinder their further applications.…”

Section: Introductionmentioning

confidence: 99%

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Capillary‐Assisted Self‐Assembly of Carbon Nanotubes for the Self‐Powered Photothermoelectric Detector

Wang

Xie

Liu

et al. 2023

Adv Materials Technologies

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The development of mid‐infrared (MIR) detectors has become a hot research topic with significant progress in low‐dimensional materials and clean‐room fabrication strategies. Some of the applications of MIR detectors include industrial non‐destructive testing, wearable safety monitoring, and other Internet of Things. Photothermoelectric (PTE) mechanism, as a room‐temperature free‐bias conversion mode, is comprehensively developed in the MIR regimes in the last decade. Although carbon nanotubes (CNTs) and their related materials are demonstrated as effective PTE conversion materials, the large‐area scalable detector fabrication based on the Si substrate is still underdeveloped, thus limiting further PTE device designs and industrial applications. Herein, the self‐assembly CNT‐based detectors driven by the capillary force are fabricated to achieve sensitive and rapid IR detection, and photoresponse measurements of PTE detectors are experimentally performed at room temperature and atmospheric conditions. This work reveals that the PTE mechanism can play a key role in the IR response, thereby broadening horizons about high‐performance IR detectors in industrial applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Capillary‐Assisted Self‐Assembly of Carbon Nanotubes for the Self‐Powered Photothermoelectric Detector

Wang

Xie

Liu

et al. 2023

Adv Materials Technologies

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“…LEDs have a myriad of benefits, including low-power, extended life, cooler operation, cost savings, and quick switching, as well as their compact size and short links. The IM/DD links' data speed is determined by the transmitter's (LED) ability to switch quickly and the receiver's responsiveness (PD) [11]. Multicarrier modulation approaches like optical orthogonal frequency division multiplexing (OOFDM) are ideal for faster data transmission, channel degradation reduction, and enhancing network throughput in optical wireless systems [12].…”

Section: Introductionmentioning

confidence: 99%

Low-Complexity Optical Transmitter Design for Future Generations

Gunturu

Valluri

2022

Preprint

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The burgeoning field of visible light communication (VLC) technology is seen as a possible complement to incumbent radio frequency (RF) systems, as it uses optical orthogonal frequency division multiplexing (OOFDM) to attain faster data rates to comply with 5G standards. Despite its benefits, the multicarrier structure of OOFDM acquires constructive additions at certain subcarrier intervals during the inverse fast Fourier transform (IFFT) operation, leading to increased peak values. Non-distorting peak-to-average power ratio (PAPR) reduction procedures, like as selective mapping (SLM), were confirmed to be the most effective method for lowering ineluctably severe PAPR amongst the other methods. The advent of numerous alternative candidates enhances computational complexity, thus form a major obstacle in SLM. To convert an input direct current-biased optical orthogonal frequency division multiplexing (DCO-OFDM) symbol into a series of candidates, the proposed SLM technique’s phase vectors are multiplied at a specific intermediate stage of IFFT. In top to this complexity reduction, the first stage IFFT output provides further reduction according to its conjugate symmetry property. The DCOOFDM signal, that has the smallest PAPR of all alternatives, is chosen for transmissions. According to the complexity analysis and simulation results, the computational complexity abatement strategy surpasses the conventional SLM (CSLM) technique that allows us to incorporate this technology into any future generation VLC systems.

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Light soaking and annealing induced modification of non-linear and linear optical absorption of nanocrystalline CdTe (nc-CdTe) thin films

Sharma

Kaur

Arora

et al. 2022

J Mater Sci: Mater Electron

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Enhanced optoelectronic properties of a mercury cadmium telluride based double heterojunction photodetector for terahertz applications

Cited by 5 publications

References 17 publications

Capillary‐Assisted Self‐Assembly of Carbon Nanotubes for the Self‐Powered Photothermoelectric Detector

Capillary‐Assisted Self‐Assembly of Carbon Nanotubes for the Self‐Powered Photothermoelectric Detector

Low-Complexity Optical Transmitter Design for Future Generations

Light soaking and annealing induced modification of non-linear and linear optical absorption of nanocrystalline CdTe (nc-CdTe) thin films

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