Robust Superlinear Photoresponse Based on p‐Te/n‐MoS2 Van Der Waals Heterojunction DOI Open Access
Lijian Li, Peng Guo, Kai Tang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

Abstract Photodetectors exhibiting robust superlinear photoresponse characteristics can overcome the limitations of traditional devices whose figures‐of‐merits decrease with increasing light irradiance at high levels, thereby providing a significant breakthrough for development intelligent optical low power consumption and efficiency. Herein, p‐Te/n‐MoS 2 van der Waals heterojunction photodetector is experimentally achieved that exhibits self‐powering operation, fast response speed, broadband, polarization‐sensitive photodetection. When exposed to 570 nm illumination 0 V bias, detector demonstrates excellent performance, including responsivity 74 mA W −1 , specific detectivity 4.1 × 10 Jones, rising/falling times 35/34 µs photocurrent anisotropy ratio 1.85. The device maintains competitive photodetection properties upon intense lights in comparison its competitors, which attributed photoresponse. Specifically, value reaches up 2.0 254 nm, while it also showcases outstanding values broadband regions. Associated theoretical analysis, primarily photogating layer mechanism 1D Te single crystals their hole conduction capability. This study paves way creating high‐performance photodetectors potential applications high‐resolution imaging, spectral neuromorphic networks, others.

Language: Английский

Recent Advancements in Nanomaterials for Near‐Infrared to Long‐Wave Infrared Photodetectors DOI Open Access
Ravinder Sharma, Leaford Nathan Henderson, Pranitha Sankar

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

Abstract Nanomaterials have superior electronic, optical, and mechanical properties making them highly suitable for a range of applications in optoelectronics, biomedical fields, photonics. Nanomaterials‐based IR detectors are rapidly growing due to enhanced sensitivity, wide spectral range, device miniaturization compared commercial photodetectors. This review paper focuses on the significant role nanomaterials infrared detection, an area critical enhancing night vision health monitoring technologies. The latest advancements photodetectors that employ various their hybrids discussed. manuscript covers operational mechanisms, designing, performance optimization strategies, material challenges. aims provide comprehensive overview current developments nanomaterial‐based identify key directions future research technological advancements.

Language: Английский

Citations

5
Recent Advances in Organic Photodetectors DOI Creative Commons

Jintao Zou,

Shuo Zhang, Xin Tang

et al.

Photonics, Journal Year: 2024, Volume and Issue: 11(11), P. 1014 - 1014

Published: Oct. 28, 2024

Organic photodetectors (OPDs) have garnered significant attention in fields such as image sensing, health monitoring, and wearable devices due to their exceptional performance. This review summarizes recent research advancements materials, structures, performance, applications of narrowband organic photodetectors, hybrid organic–inorganic perovskite flexible (FOPDs), photomultiplication type (PM-OPDs). semiconductors offer substantial potential optoelectronic owing low cost, ease processing, tunable spectral response. Hybrid materials extend the response range, FOPDs meet demands devices, PM-OPDs enhance sensitivity, allowing for detection weak light signals. Through innovations structural optimization, improvements manufacturing processes, performance OPDs has seen enhancement. article also explores application prospects these technologies medical optical communications, sensing.

Language: Английский

Citations

4
Regulation of intermolecular interaction energies for improving polarization-sensitive photodetection DOI
Zhimin Shao, Feng Yu, Yijing Fan

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(5)

Published: Feb. 3, 2025

In this study, we systematically modified the polymer structure by incorporating non-conjugated units and substituting atoms in fused-ring core, resulting significant alterations to intermolecular interaction energies of −974.1, −1076.4, −1115.1 kJ/mol between polymer:chloroform polymer:ethylene glycol. These modifications greatly enhance orientation all-polymer backbone intrinsic polarization-sensitive performance device, demonstrating exceptional capabilities polarized light detection imaging. The optimal device exhibits an ultra-fast response speed 10.6 μs, a wide frequency 17.78 kHz, large linear dynamic range 132.3 dB with good imaging ability, indicating potential benefits for diverse array extreme applications. This work illustrates how strategy modifying core can contribute continuous improvements molecular detection.

Language: Английский

Citations

0
Organic Semiconductor‐Based Polarized Photodetectors for Next‐Generation Optoelectronics DOI Open Access
Mingxing Zhang,

Xianshuo Wu,

Zhaofeng Wang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Abstract When light interacts with diverse media via reflection, transmission, and scattering, its polarization state alters, encoding the spectral information specific to object's features. With advancements in smart era, detection is progressing toward miniaturization, integration, enhanced multifunctionality, where polarization‐sensitive active layers are pivotal. Organic semiconductors—featuring chemically tailored photoelectric properties precisely engineered optical anisotropy, as well cost‐effectiveness flexibility—emerge promising candidates for next‐generation polarized‐light detection. This review highlights cutting‐edge progress of organic‐semiconductor–based photodetectors Beginning a brief introduction detection, it then summarizes recent developments organic materials sensitive linear circular light, specifically focusing on single crystals aligned conjugated polymers detection; chiral small molecules, polymers, supramolecules Advanced applications these materials, including imaging, biomimetic vision, encryption subsequently discussed. The concludes by highlighting prevailing challenges outlining future research directions essential advancing high‐performance, integrated this rapidly evolving field.

Language: Английский

Citations

0
Recent Developments in Organic Photodetectors for Future Industrial Applications: A Review DOI

J. Ajayan,

S. Sreejith,

Ajith Ravindran

et al.

Sensors and Actuators A Physical, Journal Year: 2025, Volume and Issue: unknown, P. 116459 - 116459

Published: March 1, 2025

Language: Английский

Citations

0
Ultra‐Flexible Pixelated Perovskite Photodetectors Enabled by Honeycomb Polymer Grids for High‐Resolution Imaging DOI Creative Commons
Ding Zheng, Zhaoqian Xie, Wei Huang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Abstract A nature‐inspired fabrication method based on a photolithography‐free flexible polymer grid is reported for high‐resolution pixelation of perovskite photodiode arrays with exceptional mechanical ductility and morphology resembling that natural compound eyes. The resulting pixelated photosensitive layer has ≈1 µm pixel size 2000 Pixels per inch (PPI) resolution when fully assembled as photodetector array, delivering detectivity >10 13 Jones while providing cross‐talk free imaging. Using effectively releases stress the platform, greatly increasing agility otherwise brittle film. This novel methodology device design offer new possibilities applications in robotics, biomedical imaging, virtual augmented reality.

Language: Английский

Citations

0
Buried Grating Enables Fast Response Self‐Powered Polarization‐Sensitive Perovskite Photodetectors for High‐Speed Optical Communication and Polarization Imaging DOI Open Access
Yuxuan Sun,

Jiang Wang,

Jingjing Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Abstract Polarization‐sensitive perovskite photodetectors (PSPPDs) have demonstrated great potential for acquiring multidimensional data in remote sensing, security, and optical communication fields. However, requirements of external power supplies polarization systems, slow response, poor long‐term stability restrict PSPPDs’ further development. Herein, a self‐powered PSPPD with buried grating structures induced by ultrafast laser direct writing is designed. Remarkably, detection can be achieved without the assistance conventional mechanical structures. The structure reduce light reflection through diffraction, facilitating convergence enhancing trapping within active layer PSPPD. As expected, exhibits excellent quantum efficiency (532 nm, 0 V bias), responsivity dark current values 93.93%, 403 mA W −1 , 5.95 × 10 −10 A, respectively. Notably, raising/falling time less than 2 µs, which one shortest response times among PSPPDs to best this knowledge. Moreover, after 120 days air exposure, manufactured remain highly effective fast communications, manifesting their exciting produce reliable, high‐performance devices economically efficiently future applications.

Language: Английский

Citations

0
A Fused Diketopyrrolopyrrole Derivative for Single‐Crystal Visible‐NIR Organic Phototransistor DOI Open Access

Tianqiang Cui,

Nan Luo, Zhilei Zhang

et al.

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Organic phototransistors (OPTs) have garnered significant attention due to their potential in wearable and flexible electronics. However, achieving high carrier mobility broadband response organic semiconductors for OPTs remains a challenge. In this work, new fused diketopyrrolopyrrole (FDPP) derivative is reported, 2,9-bis(4-hexylphenyl)-7H,14H-thieno[3',2':7,8]indolizino[2,1-a]thieno[3,2-g]indolizine-7,14-dione (FDPP-p-C6), synthesized through N-cyclization of DPP with an adjacent thiophene unit. This ensures backbone planarity, while the hexyl side chains remain distant from core, minimizing steric hindrance promoting efficient intermolecular stacking. Consequently, single crystals FDPP-p-C6 exhibit planar typical herringbone packing arrangement, facilitating charge transport. The single-crystal field-effect transistors (OFETs) demonstrate p-type transport, maximum 0.20 cm2 V-¹ s-¹. Additionally, show promising performance, responsivity across broad spectral range photoresponsivity 2.2 × 103 A W-¹ along specific detectivity, derived noise current, 2.8 1010 Jones. study highlights FDPP as key material advancing OFET OPT technologies, propelling relevant research forward.

Language: Английский

Citations

0
Challenges and Opportunities of Upconversion Nanoparticles for Emerging NIR Optoelectronic Devices DOI Creative Commons

Sunyingyue Geng,

Hangfei Li, Ziyu Lv

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract Upconversion nanoparticles (UCNPs), incorporating lanthanide (Ln) dopants, can convert low‐energy near‐infrared photons into higher‐energy visible or ultraviolet light through nonlinear energy transfer processes. This distinctive feature has attracted considerable attention in both fundamental research and advanced optoelectronics. Challenges such as low energy‐conversion efficiency nonradiative losses limit the performance of UCNP‐based optoelectronic devices. Recent advancements including optimized core–shell structures, tailed Ln‐doping concentration, surface modifications show significant promise for improving stability. In addition, combining UCNPs with functional materials broaden their applications improve device performance, paving way innovation next‐generation paper first categorizes elaborates on various upconversion mechanisms UCNPs, focusing strategies to boost prolong luminescence. Subsequently, an in‐depth discussion that enhance expand functionality is provided. Furthermore, a wide range devices explored, multiple emerging neuromorphic computing are highlighted. Finally, existing challenges potential solutions involved developing practical considered, well outlook future technologies

Language: Английский

Citations

0
Enhanced photomultiplication in filter-free organic photodetectors for red and NIR light sensing using minimal nonfullerene blends DOI
Linlin Shi,

Yaojiang Li,

Jia Jiao

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(29), P. 10879 - 10888

Published: Jan. 1, 2024

High sensitivity, filter-free, both red and NIR light bandpass photomultiplication OPDs are developed by the charge injection narrowing, using a minimal amount of Y6. The proposed have potential application cold metal detection.

Language: Английский

Citations

1