Filterless narrowband photodetectors employing perovskite/polymer synergetic layers with tunable spectral response

Qin, Zilun; Song, Dandan; Xu, Zheng; Qiao, Bo; Huang, Di; Zhao, Suling

doi:10.1016/j.orgel.2019.105417

Cited by 35 publications

(27 citation statements)

References 26 publications

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“…[50] The detectivity of the P4 device at an applied bias is comparable to the specific detectivity values of PEDOT : PSS-based PPDs reported to date (Figure S20, Table S7). [55][56][57][58][59][60][61][62] Even when the detectivity is calculated without bias, the P4 device exhibits excellent performance compared with results of previous studies. A stability test of the perovskite device with encapsulation was conducted for nine days under Ar atmosphere (Figure S18).…”

Section: Resultsmentioning

confidence: 66%

Versatile Pendant Polymer for Selective Charge Carrier Transport via Controlling the Supramolecular Self‐Assembly

et al. 2021

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Polyvinyl carbazole (P0)-based pendant polymers were synthesized by modifying carbazole motifs with pyrene derivatives (P1 and P4) to manipulate the bandgap and frontier orbital energy levels. To establish the electronic properties of pendant polymers according to structural differences, the polymers were utilized as additional hole transport layers in planar-type perovskite solar cells and organic photovoltaic cells. When P4 with thiophene-pyrene pendant was used as hole transport layer, all device parameters, except open-circuit voltage, were significantly improved in comparison with P0 and P1 (conjugated with t-butyl pyrene derivatives). Since P4 had more electrically conductive thiophene units than benzene units with fewer alkyl groups, the supramolecular assembly of P4 was found to be more favorable in electronic devices. Furthermore, devices with P4 demonstrated lower dark current than others, which could potentially be useful for charge carrier transport and sensitive photo detecting devices.

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Section: Resultsmentioning

confidence: 66%

Versatile Pendant Polymer for Selective Charge Carrier Transport via Controlling the Supramolecular Self‐Assembly

et al. 2021

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“…1) A narrow band-selective response of the PDs with a thick photoactive layer is obtained at a cost of the reduction in the responsivity as compared to the conventional photodiodetype PDs. [29,30] The responsivity of the PDs is limited due to the weak absorption in the selected band, caused by the attenuation of the incident light by the thick photoactive layer. [31] 2) PDs with a thick photoactive layer have a reduced response speed and a narrower response frequency bandwidth, e.g., <1 kHz, [25] because the photocarriers are drifted through a longer percolation pathway to their respective electrodes.…”

Section: Doi: 101002/adom202001388mentioning

confidence: 99%

Filter‐Free Band‐Selective Organic Photodetectors

Lan

Lau

Wang

et al. 2020

Advanced Optical Materials

102

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The present band‐selective photodetection is realized by incorporating different optical filters with broadband photodetectors (PDs). However, the use of the optical filters reduces the overall PD sensitivity. This work reports on the effort to develop high‐performance filter‐free band‐selective organic photodetectors (OPDs) having a heterostructure photoactive layer architecture, comprising a semiconducting shorter‐wavelength light depletion layer and a bulk heterojunction (BHJ) layer with an extended absorption to longer wavelengths. The filter‐free band‐selective photodetection is realized by adjusting the difference in wavelengths between the transmission cut‐off wavelength of the semiconducting light depletion layer and the absorption edge of the BHJ layer. For example, a filter‐free visible‐blind near‐infrared OPD, with a spectral rejection ratio of 100, a high responsivity of 0.39 A W−1, a high −3 dB cutoff frequency of 80 kHz, and a fast response time of ≈7 µs, is demonstrated, offering an exciting option for a plethora of applications in imaging and light communications.

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“…The perovskite/organic bilayer OPDs also show suppressed J d of 1.85 Â 10 À5 mA cm À2 and a high D* of over 10 12 Jones. [64] A narrowband NIR OPD exhibiting an EQE of 74.26% at 810 nm and an FWHM of 95 nm was realized using CH 3 NH 3 PbI 3 /CuSCN light depletion layer and PM6:Y6 BHJ light-absorption layer. [65] The spectral selective OPDs were fabricated by sequential deposition of polymer donor and acceptor using orthogonal solvents or evaporation deposition methods.…”

Section: Internal Light Depletionmentioning

confidence: 99%

“…The perovskite/organic bilayer OPDs also show suppressed J d of 1.85 × 10 −5 mA cm −2 and a high D* of over 10 12 Jones. [ 64 ] A narrowband NIR OPD exhibiting an EQE of 74.26% at 810 nm and an FWHM of 95 nm was realized using CH 3 NH 3 PbI 3 /CuSCN light depletion layer and PM6:Y6 BHJ light‐absorption layer. [ 65 ]…”

Section: Advances In High‐performance Opdsmentioning

confidence: 99%

Recent Advances in Solution‐Processable Organic Photodetectors and Applications in Flexible Electronics

Lan

Lee

Zhu

2021

Advanced Intelligent Systems

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Organic photodetectors (OPDs) are promising for applications in flexible electronics due to their advantages of excellent photodetection performance, cost-effective solution-fabrication capability, flexible device design, and adaptivity to manufacturability. This review outlines the recent advances in the development of high-performance OPDs and their applications in flexible electronics. The approaches to developing different noise reduction methods, filter-free spectral selective detection, flexible OPDs, and scale-up production of flexible OPDs through solution-fabrication processes are discussed. Applications of the OPD technology ultimately result in the materialization of wearable units, flexible and compact information sensors at commercially viable costs, including wearable health self-monitoring devices, flexible optical communication systems, and flexible large-area image sensors.

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Filterless narrowband photodetectors employing perovskite/polymer synergetic layers with tunable spectral response

Cited by 35 publications

References 26 publications

Versatile Pendant Polymer for Selective Charge Carrier Transport via Controlling the Supramolecular Self‐Assembly

Versatile Pendant Polymer for Selective Charge Carrier Transport via Controlling the Supramolecular Self‐Assembly

Filter‐Free Band‐Selective Organic Photodetectors

Recent Advances in Solution‐Processable Organic Photodetectors and Applications in Flexible Electronics

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