Polypyrrole-bismuth tungstate/polypyrrole core-shell for optoelectronic devices exhibiting Schottky photodiode behavior DOI Creative Commons
Amira Ben Gouider Trabelsi,

Mohamed Rabia,

Fatemah H. Alkallas

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 12, 2024

A polypyrrole-bismuth tungstate (Ppy-Bi2WO6) core-shell nanocomposite (n-type material) has been developed on a layered Ppy (p-type) base as an efficient light-capturing material exhibiting photodiode behavior. This device demonstrates promising sensitivity for light sensing and captures across broad spectral range, from near IR to UV. The Bi2WO6/Ppy boasts optimal bandgap of 2.0 eV, compared 3.4 eV 2.5 Bi2WO6. crystalline size the composite is approximately 21 nm, emphasizing its photon absorption capabilities. particles, around 100 nm in length, feature highly porous morphology that effectively traps incident photons. performance this optoelectronic evaluated using current density (J) measurements under (Jph) dark (Jo) conditions. In darkness, n-p type semiconductor exhibits limited with Jo −0.22 mA cm−2 at V. When exposed white light, Ppy- generates hot electrons, achieving Jph value 1.1 mA/cm−2 It shows superior responsivity (R) 6.6 mA/W 340 gradually decreasing 6.3 440 4.2 540 indicating high UV-Vis spectrum. At 730 R-value 2.6 mA/W, highlighting region. Additionally, achieves detectivity (D) 0.15 × 10¹⁰ Jones, which decreases longer wavelengths 0.14 Jones 0.9 10⁹ 0.63 nm. With great stability, low cost, easy fabrication, potential mass production, sensor holds significant promise industrial applications effective device.

Language: Английский

Over 18.2% efficiency of layer–by–layer all–polymer solar cells enabled by homoleptic iridium(III) carbene complex as solid additive DOI
Hang Zhou, Yingjie Sun, Miao Zhang

et al.

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(18), P. 2862 - 2869

Published: July 15, 2024

Language: Английский

Citations

33
Narrowband Organic Photodetectors: From Fundamentals to Prospects DOI

Xingchao Zhao,

Jian Wang, Ming Liu

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(31)

Published: Aug. 27, 2024

Abstract Organic photodetectors (OPDs) have achieved rapid development due to the emergence of organic semiconducting materials with high absorption coefficient and tunable optical bandgap, as well progress in device physics engineering. The working mechanism fundamental parameters OPDs are briefly introduced. Some smart strategies for realizing performance photovoltaic type narrowband (PV‐NB‐OPDs) photomultiplication (PM‐NB‐OPDs) comprehensively reviewed. recent PV‐NB‐OPDs PM‐NB‐OPDs is systematically introduced from fundamentals prospects, exhibiting colorful application potential full‐color imaging, spectroscopic photodetection, medical monitoring, communication, which may promote their applications.

Language: Английский

Citations

32
Cascaded Energy and Charge Transfer Synergistically Prompting 18.7% Efficiency of Layered Organic Solar Cells with 1.48 eV Bandgap DOI Open Access
Lu Zhang, Hang Zhou, Yongchao Xie

et al.

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

Published: Jan. 2, 2025

Abstract Series of layer‐by‐layer organic solar cells (LOSCs) are constructed by sequentially spin‐coating donor layer and acceptor layers. A champion power conversion efficiency (PCE) 18.79% is achieved from the LOSCs with PBQx‐TCl/ITIC/PY‐DT as active layers, which should be one top values among OSCs optical bandgap over 1.48 eV. The middle material ITIC has a complementary photon harvesting range PBQx‐TCl PY‐DT, leading to enhanced Meanwhile, can play vital role in energy charge transfer relay increase exciton utilization transport, confirmed varied FFs normal or inverted ITIC/PY‐DT PY‐DT/ITIC Over 7% PCE improvement employing form cascaded This work may provide an efficient strategy for improving performance LOSCs.

Language: Английский

Citations

11
Achieving 18.29% efficiency of layer-by-layer all polymer solar cells enabled by iridium complex as energy donor and crystallizing agent DOI

Yuheng Ni,

Jiayu Li,

Miao Zhang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160359 - 160359

Published: Feb. 1, 2025

Language: Английский

Citations

6
Over 19.2% Efficiency of Layer‐By‐Layer Organic Photovoltaics by Ameliorating Exciton Dissociation and Charge Transport DOI Open Access

Hongyue Tian,

Hang Zhou, Lu Zhang

et al.

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

Published: Jan. 26, 2025

Abstract Layer‐by‐layer (LbL) organic photovoltaics (OPVs) are fabricated with polymer PM1 as donor and small molecule L8‐BO acceptor by employing sequential spin‐coating technology. The BTP‐eC9 PTAA deliberately selected for individually incorporating into layer layer, resulting in the power conversion efficiency (PCE) increased from 18.22% to 19.23%. improvement of performance is attributed synergistically short circuit current density ( J SC ) 27.78 mA cm −2 fill factor (FF) 78.23%. introduction can promote photogenerated exciton dissociation, especially excitons near anode. Meanwhile, molecular crystallinity also enhanced appropriate layer. incorporation provide hole transport channels effectively improve holes generated self‐dissociation L8‐BO, FFs 77.40% synergistic effects layers result a 19.23% PCE optimized LbL‐OPVs. This work demonstrates that there great room hierarchically optimize achieving highly efficient

Language: Английский

Citations

4
Unidirectional Bias‐Switchable Dual‐Mode Organic Photodetectors Enables Secure Communication and Gesture Simulation DOI Open Access

Haijun Jiang,

Yuanhong Hu,

Haohong Jiang

et al.

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

Published: Jan. 2, 2025

Abstract The development of dual‐mode organic photodetectors (OPDs) greatly improves its functionality by enabling selective spectral detection. This study presents a unidirectional bias‐switchable OPD that leverages carrier extraction through the manipulation light field distributions and non‐equilibrium transport dynamics. features simple single‐layer structure, allowing for straightforward one‐sided incidence without need voltage polarity switching. By optimizing blend poly(4‐butyl‐phenyl‐diphenyl‐amine) non‐fullerene acceptor Y6, device achieves efficient single‐band detection ultraviolet (UV) at low bias dual‐band UV near‐infrared high bias. versatility not only streamlines architecture but also facilitates secure optical communication gesture simulation, making it valuable tool advancing optoelectronics. proposed strategy demonstrates universal applicability, paving way enhanced security in digital systems.

Language: Английский

Citations

3
Layered All‐Polymer Solar Cells with Efficiency of 18.34% by Employing Alloyed Polymer Donors DOI Open Access
Hang Zhou, Lu Zhang,

Hongyue Tian

et al.

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 7, 2025

Abstract A series of layered all‐polymer solar cells (LA‐PSCs) with the normal or inverted structure are prepared by employing a sequential spin‐coating method PBQx‐TCl, PM1 as polymer donor, and PY‐DT acceptor. The power conversion efficiency (PCE) LA‐PSCs can be improved from 17.20% to 18.34% incorporating 30 wt.% into PBQx‐TCl layer, resulting simultaneously increased J SC 25.35 mA cm −2 , V OC 0.971 FF 74.49%. PCE improvement also achieved PBQx‐TCl:PM1 donor layers. mixed prefer form alloyed states in LA‐PSCs, which confirmed gradually s more content Meanwhile, photogenerated excitons layers dissociated at interface between PM1, especially for located near ITO electrode. exciton dissociation provide an additional channel improving utilization efficiency, positive external quantum spectral difference (∆EQE) values Over 6.6% realized using layer.

Language: Английский

Citations

3
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

3
Design of Perovskite‐Based Photodetector Demonstrating Wide Spectral Responsivity Employing Graphene Oxide for Enhanced Electron Transport DOI Open Access
Richa Srivastava, Sudhanshu Verma, Akhilesh Kumar Chaudhary

et al.

physica status solidi (b), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

Perovskite‐based photodetectors have gained significant attention due to their remarkable optoelectronic properties, including high absorption coefficients, tunable bandgaps, and suitable carrier diffusion lengths. This work focuses on designing a high‐performance perovskite photodetector with device structure of FTO/GO/CH 3 NH SnBr /Zn P 2 /Au, utilizing SCAPS‐1D simulations explore key performance parameters. The analysis systematically examines the effects crucial factors such as layer thickness defect densities important metrics, detectivity, responsivity, dark current. In this design, CH (methylammonium thin bromide) serves absorber layer, while GO (graphene oxide) Zn (zinc phosphide) act interfacial layers, contributing enhanced performance. simulated demonstrates an impressive short‐circuit current density( J SC ) 25.68 mA cm −2 achieves quantum efficiency exceeding 95% in visible spectrum. Additionally, shows maximum detectivity 9.7 × 10 16 Jones responsivity peak 0.57 A W −1 , particularly red near‐infrared regions These results underscore immense potential materials for developing efficient, wide‐spectrum characteristics.

Language: Английский

Citations

1
Light‐Mediated Photomultiplication via Cascade Energy Transfer in Organic Photodiode DOI Creative Commons
Gae Hwang Lee, Jae Hyun Kim, Hyunbum Kang

et al.

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

Published: Jan. 29, 2025

Abstract Photomultiplication organic photodetectors (PM‐OPDs) demonstrate exceptional sensitivity in low‐light environments, making them valuable for imaging, environmental monitoring, and wearable health sensors. However, traditional PM‐OPDs require significantly high operational voltages, which lead to elevated dark current degraded noise performance. To address these limitations, a novel light‐mediated PM‐OPD is introduced that enhances signal gain through cycle of light emission reabsorption within the photoactive layers. This design integrates absorption layers, achieving an external quantum efficiency exceeding 200% while maintaining low (≈10 −9 A cm −2 ) specific detectivity over 5.0 × 10 13 Jones. By reabsorbing internally generated drive photomultiplication, device enables efficient amplification without penalties. It achieves 29.5 dB photoplethysmography detection at lux demonstrates scalability cost‐effective production using thermal evaporation, it promising solution low‐power, high‐sensitivity

Language: Английский

Citations

0