Highly flexible and stable perovskite/microbead hybrid photodetectors with improved interfacial light trapping

Oh, Heeyoon; Kim, Hae Jin; Kim, Soyoung; Kim, Jin A; Kang, Gumin; Park, Minwoo

doi:10.1016/j.apsusc.2020.148850

Cited by 14 publications

(12 citation statements)

References 41 publications

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“…96 Oh et al prepared a flexible photodetector with a monolayer of polystyrene (PS) microbeads, transfer-printed on MAPbI 3 / PMMA structure on a flexible polymer substrate (NOA 63). 156 The PS monolayer improved optical properties, mechanical durability, and environmental stability of the perovskite photodetector. The PS microbeads strongly confine the electromagnetic field in perovskite, resulting in increased generation of excess free carriers, thereby significantly improving the photoluminescence (PL) and omnidirectionality of the device.…”

Section: ■ Fabrication Methodsmentioning

confidence: 99%

“…The performance of the perovskite photodetector in Heeyoon Oh et al was improved by 8.5 times compared to those values of the devices without a transfer-printed polystyrene microbead monolayer. 156 These results are attributed to the intrinsic flexibility of perovskite due to the PMMA adhesion layer that helps the strain relaxation of perovskite layer. In addition to that, the hydrophobic PMMA and PS microbeads prevent the penetration of moisture.…”

Section: ■ Stabilitymentioning

confidence: 99%

“…Sun et al demonstrated that the memristors with HOIP film thickness less than 100 nm were independent of light input as their RS mechanism was dominated by the silver metal filament formation/rapture, whereas thicker perovskite films (a few hundred nanometers) showed memristive action caused by the formation of a conductive filament made of iodine vacancies and interaction with light input signals . Oh et al prepared a flexible photodetector with a monolayer of polystyrene (PS) microbeads, transfer-printed on MAPbI 3 /PMMA structure on a flexible polymer substrate (NOA 63) . The PS monolayer improved optical properties, mechanical durability, and environmental stability of the perovskite photodetector. The PS microbeads strongly confine the electromagnetic field in perovskite, resulting in increased generation of excess free carriers, thereby significantly improving the photoluminescence (PL) and omnidirectionality of the device.…”

mentioning

confidence: 99%

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Advances in Flexible Memristors with Hybrid Perovskites

Gogoi

Bajpai

Mallajosyula

et al. 2021

J. Phys. Chem. Lett.

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Hybrid organic–inorganic metal halide perovskite (HOIP)-based memristors have captured strong attention not only as an emerging candidate for next-generation high-density information storage technology but also for use in healthcare technology and the Internet of Things (IoT) because of their unique properties: low weight, flexibility, compatibility, stretchability, and low power consumption. In this Perspective, we review the recent advances of various aspects of flexible memristors focusing on the selection of the flexible substrates, materials, interfaces, several resistive switching mechanisms, and different methodologies of perovskite growth. The current state of the art of the memristor as an artificial synapse, light-induced resistive switching, and logic gates is comprehensively and systematically reviewed. Finally, we briefly discuss the stability factors of perovskites and present the conclusion with a broad outlook on the progress and challenges in the field of perovskite-based flexible memristors.

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Section: ■ Fabrication Methodsmentioning

confidence: 99%

Section: ■ Stabilitymentioning

confidence: 99%

mentioning

confidence: 99%

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Advances in Flexible Memristors with Hybrid Perovskites

Gogoi

Bajpai

Mallajosyula

et al. 2021

J. Phys. Chem. Lett.

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“…Organic–inorganic hybrid perovskites have been proposed as core materials for next-generation optoelectronic devices including light-emitting diodes (LEDs), photovoltaics, photodetectors (PDs), and optical transistors. − The intrinsic flexibility of these materials further leads to their expanded applications in flexible platforms. Their unique mechanical properties originate from the hybrid bonds of ionic and van der Waals interactions.…”

Section: Introductionmentioning

confidence: 99%

Stretchable Photodetectors Based on Electrospun Polymer/Perovskite Composite Nanofibers

Kim

et al. 2022

ACS Appl. Nano Mater.

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Polymer/lead halide perovskite composites are a promising platform for wearable optoelectronic devices. In particular, one-dimensional nanocomposites are considered core materials for solar energy conversion textiles and optical sensors. Herein, we designed stretchable photodetectors incorporating thin and uniform polymer/perovskite composite nanofibers produced by electrospinning of a polymer/perovskite precursor solution.During the reaction of precursors in the as-spun nanofiber, protruding perovskite nanoplates on the fiber surface and embedded nanoparticles within the fiber were formed, showing double photoluminescence emissions. Furthermore, the mechanical behavior of the nanofibers on a rubbery substrate strongly depends on their orientation angle (α) with respect to the applied tensile force. As α decreases, the loaded stress is significantly reduced, which contributes to a stretchability of up to 15% strain for any orientation. The excellent percolation of perovskite nanoparticles leads to high photocurrents under green and red light illumination. At 15% strain, the responsivity and detectivity of the stretchable photodetector at λ = 550 nm were 51.2 mA W −1 and 2.23 × 10 11 Jones, respectively. The device performance was well retained during mechanical deformation and stability tests. This thin and stretchable device was also applied to a wearable photodetector to demonstrate its great potential as a wearable image sensor.

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“…Photodetectors that convert incident light into electrical signals have been applied in many electronic systems, including in optical communications, bioimaging, and security fields. − However, the complicated manufacturing, poor flexibility, and low coefficient of conventional detectors based on inorganic semiconductors (Si, Ge, and GaInAs) hamper their widespread use. − Solution-processed organic photodetectors (OPDs) with organic layers on the order of nanometers have received tremendous attention due to their advantages of low cost, light weight, flexibility, and simple fabrication. − In particular, photomultiplication-type (PM-type) OPDs with external quantum efficiencies (EQEs) greater than 100% show excellent weak light detection ability . The EQE at 620 nm of PM-type OPDs based on poly(3-hexylthiophene)/[6,6]-phenylC61-butyric acid methyl ester (PCBM) reached 1250% under a −10 V applied voltage .…”

Section: Introductionmentioning

confidence: 99%

Transfer-Printed Nanoscale Poly(3-hexylthiophene-2,5-diyl) Layers for Organic Photodetectors

Zhou

Zhao

et al. 2021

ACS Appl. Nano Mater.

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Solution-processed organic photodetectors (OPDs) with organic layers on the order of nanometers have received tremendous attention due to their advantages of low cost, light weight, flexibility, and simple fabrication. The relatively high dark current, which is ascribed to the inherent properties of the bulk heterojunction structure, limits further promotion of OPDs. In this work, we performed a systematic investigation on transfer printing technology (TPT) based on different electron blocking layers (EBLs) and active layers. We demonstrated that the surface morphology of transfer-printed layers determines the performance of OPDs. Compared with PBDB-T and MEH-PPV, a smooth and compact P3HT layer can be obtained by TPT. The results demonstrated that in addition to the energy level or absorption spectrum of the material, the mechanical property that the surface remains smooth after transfer printing needs to be added as a selection criterion for transfer-printed EBLs. The dark current was reduced by approximately 2 orders of magnitude compared with that of the OPD without an EBL based on three different active layers (including fullerene and nonfullerene systems), while comparable photocurrents were obtained. Consequently, a similar responsivity (R), an improved specific detectivity (D*), and an enlarged linear dynamic range for OPDs were observed with the insertion of transfer-printed P3HT. Finally, the effect of transfer printing on the photoresponse time was investigated, and the results demonstrated that transfer-printed EBLs slightly increased the photoresponse time of OPDs.

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Highly flexible and stable perovskite/microbead hybrid photodetectors with improved interfacial light trapping

Cited by 14 publications

References 41 publications

Advances in Flexible Memristors with Hybrid Perovskites

Advances in Flexible Memristors with Hybrid Perovskites

Stretchable Photodetectors Based on Electrospun Polymer/Perovskite Composite Nanofibers

Transfer-Printed Nanoscale Poly(3-hexylthiophene-2,5-diyl) Layers for Organic Photodetectors

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