Light outcoupling strategies in oriented perovskite light-emitting-diodes: recent trends, opportunities, and challenges toward innovation

Saleem, Muhammad Imran; Choi, Rino; Lee, Jeong‐Hwan

doi:10.1039/d2qm01365g

Cited by 10 publications

(1 citation statement)

References 118 publications

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“…[10] Shen et al proposed improving the performance of perovskite-based photodetectors by using a SnO 2 /ZnO double electron transport layer. [11] Among the promising ETL materials, TiO 2 is one of the most popular commercially available nanomaterials that has been widely used for essential technological applications such as solar cells, sensors, photocatalysis, and optoelectronic devices [12][13][14] due to its chemical stability, non-toxicity, and low cost. A variety of TiO 2 nanostructures have been reported, such as nanotubes, nanorods, nanofibers, and nanoparticles due to their desired characteristics.…”

Section: Introductionmentioning

confidence: 99%

High‐Efficiency Flexible Cs₂AgBiBr₆‐Based Visible Photodetector with Transferable TiO₂ Nanorod Electron‐Transport Layer

Jeong,

Ha,

et al. 2024

Adv Materials Technologies

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In this work, a flexible perovskite photodetector is demonstrated with a transferable TiO2 nanorod (NR) as an electron transport layer (ETL). The TiO2 NRs are grown by the hydrothermal method on Ni metal buffer layer/Si (100) substrates. During the growth process of TiO2 NRs in solution, the Ni sacrificial buffer layer is removed by hydrochloric acid in the initial stage. The resulting suspended seed layer can then sustain the growth of TiO2 NRs in both the top and bottom directions. The successfully grown TiO2 NRs are now transferred onto an ITO‐coated PET substrate as an ETL for the flexible Cs2AgBiBr6 perovskite photodetectors. The fabricated photodetector operates under a wavelength of 405 nm, and at an external bias voltage of −0.3 V, it exhibits an outstanding performance with an on/off ratio of 1.23 × 104, photoresponsivity (R) of 0.666 A W−1, and a detectivity (D*) of 9.29 × 1012 Jones. In terms of flexibility, the optoelectronic performance of each device is well kept within 5% after 300 bending test cycles with a radius of 1 cm. The suggested transferable TiO2 NRs can improve the efficiency of flexible optoelectronic devices that require synergistic electron transfer effects by using heterostructures with TiO2 nanostructures.

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Section: Introductionmentioning

confidence: 99%

High‐Efficiency Flexible Cs₂AgBiBr₆‐Based Visible Photodetector with Transferable TiO₂ Nanorod Electron‐Transport Layer

Jeong,

Ha,

et al. 2024

Adv Materials Technologies

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Infrared Photodetectors: Recent Advances and Challenges Toward Innovation for Image Sensing Applications

Saleem,

Kyaw,

Hur

2024

Advanced Optical Materials

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High‐resolution infrared (IR) imaging technology holds substantial significance across diverse fields including biomedical imaging, environmental surveillance, and IR digital cameras. Current IR detectors used in commercial applications are based on ultra‐high vacuum‐processed traditional inorganic semiconductors like silicon or III‐V compounds (e.g., Si, Ge, and InGaAs). However, the rapid advancements in applications such as autonomous vehicles, virtual reality, and point‐of‐care healthcare are driving an escalating need for innovative imaging technologies. This review aims to bridge the gap by exploring solution‐processed semiconductor photodetectors (PDs), which offer distinct advantages including cost‐effectiveness, tunable spectral response, and potential for multiple‐exciton generation. These characteristics make them particularly suitable for optical communication, IR imaging, and biological monitoring applications. This review provides comprehensive insights into the research trends pertaining to solution‐processed IR detectors and imagers based on colloidal quantum dots, perovskites, organic compounds, and 2D materials. The review commences with the current market worth of image sensors, the fundamental principles of single‐pixel and multipixel array IR imagers, and key parameters used to assess IR detector performance. In essence, the review concludes with a summary of recent advancements and future prospects for next‐generation IR PD devices and their potential application as an IR imager.

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Cutting‐Edge Developments in Metal Halide Perovskites Core/Shell Heterocrystals: from Photodetectors to Biomedical Applications

Saleem,

Batool,

Hur

2024

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In recent years, the performance of metal halide perovskite (MHP)‐based detectors (photon, biomedical, and X‐ray detection) has significantly improved, resulting in higher carrier mobilities, longer carrier diffusion lengths, and excellent absorption coefficients. However, the widespread adoption of halide perovskites has been hindered by issues related to their stability and toxicity. Various strategies have been adopted to address these challenges, focusing on enhancing ambient stability and reducing toxicity by encapsulating MHPs within stable and robust host materials, such as silicon compounds, metal oxides, chalcogenides, and lead‐free perovskites. This review focuses on recent developments in hybrid nanostructure‐based detectors (photon, biomedical, and X‐ray), particularly core/shell architectures, and provides a comprehensive analysis of techniques for mitigating degradation due to light and oxygen exposure, UV irradiance, and thermal effects. This review enhances the understanding of current advancements in core/shell‐based detectors.

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Light outcoupling strategies in oriented perovskite light-emitting-diodes: recent trends, opportunities, and challenges toward innovation

Abstract: The engineering of the refractive index, transition dipole moments, the integration of photonic structures, and the photon-recycling process are the representative strategies to improve the outcoupling in perovskite light-emitting diodes (PeLEDs).

Cited by 10 publications

References 118 publications

High‐Efficiency Flexible Cs₂AgBiBr₆‐Based Visible Photodetector with Transferable TiO₂ Nanorod Electron‐Transport Layer

High‐Efficiency Flexible Cs₂AgBiBr₆‐Based Visible Photodetector with Transferable TiO₂ Nanorod Electron‐Transport Layer

Infrared Photodetectors: Recent Advances and Challenges Toward Innovation for Image Sensing Applications

Cutting‐Edge Developments in Metal Halide Perovskites Core/Shell Heterocrystals: from Photodetectors to Biomedical Applications

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Light outcoupling strategies in oriented perovskite light-emitting-diodes: recent trends, opportunities, and challenges toward innovation

Abstract: The engineering of the refractive index, transition dipole moments, the integration of photonic structures, and the photon-recycling process are the representative strategies to improve the outcoupling in perovskite light-emitting diodes (PeLEDs).

Cited by 10 publications

References 118 publications

High‐Efficiency Flexible Cs2AgBiBr6‐Based Visible Photodetector with Transferable TiO2 Nanorod Electron‐Transport Layer

High‐Efficiency Flexible Cs2AgBiBr6‐Based Visible Photodetector with Transferable TiO2 Nanorod Electron‐Transport Layer

Infrared Photodetectors: Recent Advances and Challenges Toward Innovation for Image Sensing Applications

Cutting‐Edge Developments in Metal Halide Perovskites Core/Shell Heterocrystals: from Photodetectors to Biomedical Applications

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Product

Resources

About

High‐Efficiency Flexible Cs₂AgBiBr₆‐Based Visible Photodetector with Transferable TiO₂ Nanorod Electron‐Transport Layer

High‐Efficiency Flexible Cs₂AgBiBr₆‐Based Visible Photodetector with Transferable TiO₂ Nanorod Electron‐Transport Layer