A5050145870- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Analytical Chemistry and Sensors
- Photonic and Optical Devices
- Nanowire Synthesis and Applications
- Luminescence and Fluorescent Materials
- Molecular Junctions and Nanostructures
- Semiconductor materials and devices
- Gas Sensing Nanomaterials and Sensors
- Thin-Film Transistor Technologies
- Advanced Memory and Neural Computing
- Transition Metal Oxide Nanomaterials
- Asphalt Pavement Performance Evaluation
- Plasma Diagnostics and Applications
- Synthesis and properties of polymers
- Polymer Nanocomposites and Properties
- Electrospun Nanofibers in Biomedical Applications
- biodegradable polymer synthesis and properties
- Advanced Cellulose Research Studies
- Polymer composites and self-healing
- Advanced Chemical Sensor Technologies
- Railway Engineering and Dynamics
- Electrical and Thermal Properties of Materials
Fudan University
2024
Beijing Jiaotong University
2019-2023
State Council of the People's Republic of China
2021
South China University of Technology
2019
Abstract As a promising candidate for next‐generation photodetectors, organic photodetectors (OPDs) outperform the commercial inorganic in terms of solution and large‐area processability, mechanical flexibility, tunable spectral response range, low‐cost manufacturing, light weight. The OPDs with broadband attract an extensive attention due to their potential wide application fields, such as flexible image sensing, surveillance, health monitoring. In this review, recent advances are...
Abstract Wide bandgap polymer D18 with narrow photon harvesting in visible light range and small molecule N3 near‐infrared are adopted for building semitransparent organic photovoltaics (OPVs). To find out the optimal D18:N3 weight ratio OPVs, series of opaque OPVs built a varied ratio. The power conversion efficiency (PCE) fill factor can be maintained over 16% 77% (0.7:1.6, wt/wt) based respectively. average transmittance (AVT) corresponding blend films achieved 50%, demonstrating great...
Abstract Narrowband photomultiplication‐type organic photodetectors (PMOPDs) are realized with poly(3‐hexylthiophene‐2,5‐diyl) (P3HT) as the optical field adjusting (OFA) layer and transfer‐printed P3HT: [6,6]‐phenyl‐C 71 ‐butyric acid methyl ester (PC BM) (50:1, w/w) photomultiplication (PM) layer. The thickness of OFA layers is adjusted to optimize interfacial trapped electron distribution density, which determines external quantum efficiency (EQE) spectral response range PMOPDs. PMOPDs...
Ultra-narrow-band NIR photomultiplication organic photodetectors (PM-OPDs) were realized in ITO/PEDOT:PSS/active layers/Al based on an interfacial-trap-induced charge injection narrowing (CIN) concept. The rather less Bod Ethex-Hex (BEH) is imbedded a polymer donor matrix to form large amounts of isolated electron traps. Trapped electrons BEH close Al electrode will enforce hole-tunneling induced by interfacial band bending, resulting phenomenon. PM-OPDs with P3HT:BEH as the active layer...
Abstract Ultraviolet (UV) narrowband photodetectors play a critical role in missile detection, flame monitoring, optical communication, etc. It is great challenge to realize UV organic due wide photo‐harvesting property of materials, especially for photomultiplication type (PM‐OPDs). In this work, smart strategy proposed achieve response by coupling Fabry−Pérot microcavity with PM‐OPDs. PM‐OPDs are realized using poly(3‐hexylthiophene‐2,5‐diyl):[6,6]‐phenyl‐C 71 ‐butyric acid methyl ester...
This review systematically summarizes the development of all-small-molecule organic photovoltaics (SMPVs) from molecule engineering and device aspects, highlights challenges perspectives further developing SMPVs.
Layer‐by‐layer organic photovoltaics (LbL‐OPVs) are fabricated using wide bandgap polymer D18 with narrow photon harvesting range in visible light region and small molecular N3 strong near‐infrared harvesting; the only difference is layer thickness adjusted by spin coating speed. A 15.75% power conversion efficiency (PCE) obtained from LbL‐OPVs prepared under 7000 round per minute of condition; corresponding D18/N3 layers have a 52.06% average transmittance (AVT) spectral 370 to 740 nm....
Broad response organic photodetectors (OPDs) with a photomultiplication (PM) effect are achieved one absorber layer and multiplication layer. The range of the PM-OPDs is primarily determined by materials in layer, external quantum efficiency (EQE) mainly controlled Here, double-layered were designed an ITO/ZnO/PM6:Y6/PC71BM:P3HT (100:5, w/w)/Au structure, where PM6:Y6 employed as PC71BM:P3HT used optimal exhibit broad covering 350-950 nm. Meanwhile, largest EQE value ∼1200% maximum specific...
PM type OPDs are firstly achieved based on electron tunneling injection with electron-only transport properties.
Broad-band organic photomultiplication-type photodetectors were successfully fabricated with one photon harvesting layer and photomultiplication layer, exhibiting broad response range from 300 to 1000 nm over 50400% EQE at 360 nm.
Three polymers, DCP1-3, with PC 61 BM pendants as intramolecular traps were carefully synthesized, and they successfully applied in photomultiplication-type organic photodetectors (PM-OPDs) showing excellent intrinsic stability.
Photomultiplication-type polymer photodetectors (PM-PPDs) were fabricated with hole-only transport active layers containing polymer(s): [6,6]-phenylC61-butyric acid methyl ester (PC61BM) a weight ratio of 100:2. The rather less PC61BM content in prefers to generate large amount isolated electron traps surrounded by polymers. Photogenerated electrons prefer be trapped the due lack continuous electron-transport channels. close Al electrode would like seduce hole tunneling injection....
Broadband photomultiplication type all-polymer photodetectors with the structure of ITO/PFN-Br/PBDB-T : PYF-T-o (3 100)/LiF/Au achieve EQEs 18 000% at 360 nm and 9000% 850 under 4 V, which are applied in an optical pulse counting circuit.
Efficient ternary blend organic photovoltaic devices (OPVs) are built based on a D18‐Cl:Y6 host system and star polymer donor PM6 as the third component. A power conversion efficiency (PCE) of 16.89% is achieved in binary OPVs, with short‐circuit current density ( J SC ) 25.31 mA cm −2 , an open‐circuit voltage V OC 0.878 V, fill factor (FF) 75.81%. Upon incorporating appropriate active layers, PCE optimal OPVs can be increased to 17.61%, benefiting from 26.35 0.871 FF 76.82%. Polymers...
Abstract Filter‐free narrowband photomultiplication‐type planar heterojunction (PHJ) organic photodetectors (PM‐PHOPDs) are first realized by employing a thick front donor layer and an ultrathin PC 71 BM layer. The is employed as optical field adjusting (OFA) sequentially coated will diffuse slightly into OFA layer, which works interfacial electron traps to capture photogenerated electrons for assisting hole tunneling injection. P3HT/PC BM‐based PM‐PHOPDs exhibit response with full‐width of...
All-polymer photodetectors with photomultiplication were fabricated PMBBDT and N2200 as photoactive layers, which exhibit an external quantum efficiency of 20 700% under 4 V. The signal-to-noise ratio, linear dynamic range specific detectivity simultaneously enhanced by empolying a PEDOT:PSS/P-TPD double hole transport layer. An optical switch system without any current amplifier was realized.
Abstract Optoelectronic devices with imaging and recognition capabilities are crucial for developing artificial visual system (AVS). Bias‐switchable photodetection photosynaptic have been developed using 2D perovskite oxide/organic heterojunctions. This unique structure allows modulated carrier dynamics under varied bias conditions, enabling the to function as photodetectors without photosynapses bias. At zero bias, device achieves high responsivity (≈0.36 A W −1 at 320 nm) rapid response...