Nested Inverse Opal Perovskite toward Superior Flexible and Self‐Powered Photodetection Performance

Tian, Wei; Min, Liangliang; Cao, Fengren; Li, Liang

doi:10.1002/adma.201906974

Cited by 60 publications

(51 citation statements)

References 51 publications

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“…The space‐charge‐limited current (SCLC) would directly evaluate the trap density ( n trap ) of the active films. [ 22,23 ] The typical dark current density ( J d ) – voltage ( V ) characteristics of the electron‐only device with an architecture of FTO/compact TiO 2 /active layer/PCBM/Ag are measured, as shown in Figure . Figure 2a,b shows the SCLC results of the devices with a single active layer.…”

Section: Resultsmentioning

confidence: 99%

Double Active Layers Constructed with Halide Perovskite and Quantum Dots for Broadband Photodetection

Guo

Bao

Gao

et al. 2020

Advanced Optical Materials

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Herein, solution‐processed, high‐performance broadband (300–1100 nm) photodetectors based on double active layers incorporating narrow‐bandgap CuInSe2 (CISe) quantum dots (QDs) and halide perovskite are devised. The CISe QDs/perovskite film as the photoactive layer boosts the photocurrent and suppresses dark current. Due to the joint light absorption effect of CISe QDs and halide perovskite, the photoelectric conversion capacity is improved. Furthermore, CISe QDs as an electron‐blocking layer can effectively block electrons to the hole transport layer and reduce the thermal noise. The optimized photodetector exhibits responsivity over 150 mA W–1 in the visible and more than 20 mA W–1 in the near‐infrared (800–1000 nm) ranges, specific detectivity of more than 7.0 × 1012 Jones in the visible region and 7.7 × 1011 Jones in the near‐infrared region, a transient response time of 277 ns with the active area of 0.013 cm2, and a linear dynamic range of ≈75 dB. Importantly, the CISe QDs layer makes the perovskite denser and more hydrophobic, thus improves the environmental and thermal stability of the detector, even extends the working temperature to exceeding 150 °C. The design concept and the considerable performance of this novel device provide a reference value for polychromatic light detection.

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Section: Resultsmentioning

confidence: 99%

Double Active Layers Constructed with Halide Perovskite and Quantum Dots for Broadband Photodetection

Guo

Bao

Gao

et al. 2020

Advanced Optical Materials

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“…2g. The maximum value of R and D* for 1 wt % PS-MAPbI 3 device is 2.73 A W −1 and 6.2 × 10 13 Jones at illumination intensity of 0.001 mW cm −2 , which is comparable and even higher than the previous reports on the flexible photodetectors (Table 1) 3,12,13,20,[27][28][29][30][31][32][33][34][35][36][37][38] . In contrast, the plain MAPbI 3 device achieves only R (0.61 A W −1 ) and D* (0.86 × 10 13 Jones), which implies that the incorporation of 1 wt % PS in MAPbI 3 greatly improved the photodetector performance.…”

Section: Resultsmentioning

confidence: 46%

“…Large-area, cost-effective, and flexible photodetectors are required in multiple applications such as next-generation wearable optoelectronics, robotics, bio-imaging, illumination monitoring systems, and remote sensing [1][2][3][4][5] . Organometal halide perovskites, specifically CH 3 NH 3 PbI 3 (or MAPbI 3 ) has emerged as outstanding light-harvesting material in the optoelectronic field due to its long charge carrier diffusion length, low exciton binding energy, broadband absorption, and direct bandgap [6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Porous perovskite films integrated with Au–Pt nanowire-based electrodes for highly flexible large-area photodetectors

2020

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Flexible, large-area, and stable perovskite photodetectors have drawn increasing widespread research attention for next-generation wearable and portable optoelectronic devices. However, high mechanical durability coupled with large device area and enhanced environmental stability has not been demonstrated yet to attain practical viability. Herein, a highly bendable, stable, and large-area (3 cm2) flexible polystyrene incorporated perovskite photodetector is presented. Due to the formation of a porous polystyrene-perovskite composite film in a single step it allows unprecedented mechanical stability, maintaining 85% of its original photocurrent value after 10,000 bending cycles at a bending angle of 120°. Equally crucial, the solution-processed self-assembled Pt–Au nanochains were developed to provide a simple and fast method of patterning the conductive and flexible electrodes onto the filter substrate. The optimized polystyrene-perovskite photodetector exhibits a high responsivity up to 2.73 A W−1, a maximum specific detectivity of 6.2 × 1013 Jones, and a superior switching ratio of 1.0 × 104. In addition, the polystyrene-perovskite photodetector yields excellent stability under the combined stresses of moisture, ambient air, and room light, and retains 92% of its original performance for over 30 days. All these results demonstrate that this work provides a facile and cost-effective approach that paves the way to develop high-performance, stable, and highly flexible optoelectronic devices.

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“…In this way, a high detectivity of 1.35 × 10 13 Jones was obtained in the PDs based on Cs 0.05 (FA 0.85 MA 0.15 ) 0.95 Pb(I 0.85 Br 0.15 ) 3 . [ 104 ] There are two common interfacial engineering strategies to improve the performance of PDs, namely, selection of different interfaces and the passivation of interfaces. A short response time of 1 ns was obtained by introducing C 60 /BCP as an interface passivation layer.…”

Section: Photodetectorsmentioning

confidence: 99%

“…In order to overcome the limitations of the photoelectric performance and stability of the traditional planar devices, Tian et al developed a nested inverse opal (NIO) structured perovskite photodetector via a facile template-assisted spin-coating method. [104] As Figure 23a shows, an inverse opal SnO 2 ETL was fabricated on flexible polyethylene naphthalate/ITO substrate via polystyrene (PS) microspheres-assisted template method. The photodetectors fabricated by this way displayed a high responsivity of 473 mA W −1 , a detectivity up to 1.35 × 10 13 Jones at 720 nm without an external bias, and an LDR of 110 dB (Figure 23c,d).…”

Section: Wwwadvopticalmatdementioning

confidence: 99%

Emerging Perovskite Materials with Different Nanostructures for Photodetectors

Chen

Zheng

2020

Advanced Optical Materials

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In recent years, solution‐processed lead trihalide perovskites have been widely used as semiconductors in photodetectors with their salient features of tunable direct bandgap, long carrier lifetime, extended diffusion length, and high carrier mobility, etc. For the photodetector application, perovskites with different structures ranging from the traditional 3D perovskites to the emerging 2D perovskites, to 1D nanowires, and to 0D quantum dots, have been synthesized. In this perspective, the recent advances in the strategies of preparing novel lead trihalide perovskites with different nanostructures are summarized together with an overview on their application in photodetectors including photoconductors, photodiodes, and phototransistors. The semiconductor selection and structure–performance relationships of various photodetectors over the past 5 years are discussed comprehensively. Finally, a brief summary as well as an in‐depth discussion regarding the current challenges and perspectives for the future development of perovskite‐based photodetectors is presented.

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Nested Inverse Opal Perovskite toward Superior Flexible and Self‐Powered Photodetection Performance

Abstract: where J ph and J d represent the photocurrent and dark current density, respectively. As shown in Figure 3e, the NIO device Adv.

Cited by 60 publications

References 51 publications

Double Active Layers Constructed with Halide Perovskite and Quantum Dots for Broadband Photodetection

Double Active Layers Constructed with Halide Perovskite and Quantum Dots for Broadband Photodetection

Porous perovskite films integrated with Au–Pt nanowire-based electrodes for highly flexible large-area photodetectors

Emerging Perovskite Materials with Different Nanostructures for Photodetectors

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