Inverted-type polymer light-emitting diodes with Au nanoparticles modified ITO cathode has exhibited improved brightness from 5900 to 15,000 cd m(-2) (1.5-fold enhancement) and enhanced luminous efficiency from 4.4 to 10.5 cd A(-1) (1.4-fold enhancement), when greenish emissive polymer-P-PPV was applied as active layer. Both the experimental and theoretical results show that it is mainly attributed to effective overlapping between local surface plasmon resonance induced by Au nanopartices and excitons quenching region at ZnO/P-PPV interface, which makes originally electrode-quenched excitons emissive and increases excitons efficiency.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/am5033764 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Bifunctional Group Modulation Strategy Enables MR-TADF Electroluminescence Toward BT.2020 Green Light Standard.
Adv Mater
January 2025
Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P. R. China.
Herein, a parallel "bifunctional group" modulation method is proposed to achieve controlled modulation of the emission wavelength and full-width at half-maximum (FWHM) values. As a result, three proof-of-concept emitters, namely DBNDS-TPh, DBNDS-DFPh, and DBNDS-CNPh, are designed and synthesized, with the first functional dibenzo[b,d]thiophene unit concurrently reducing the bandgap and elevate their triplet state energy. A second functional group 1,1':3',1″-triphenyl, and electron acceptors 1,3-difluorobenzene and benzonitrile, respectively, to deepen the HOMO and LUMO levels.
View Article and Find Full Text PDFSpray-Printed Light-Emitting Diodes with Perovskite/Polymer Composite Emitters on Various Transparent Substrates.
ACS Appl Mater Interfaces
January 2025
Department of Chemical and Biological Engineering, Sookmyung Women's University, Seoul 04310, Korea.
Advancements in printing techniques are essential for fabricating next-generation displays. Lead halide perovskites demonstrate great potential as light emitters of solution-processed light-emitting diodes (LEDs). In particular, the perovskite/polymer composite emitters exhibit exceptional luminescent characteristics, mechanical flexibility, and environmental stability due to the improved film morphologies and defect passivation achieved through the introduction of polymer additives.
View Article and Find Full Text PDFBipolar Solid-Solution Hosts for Efficient Crystalline Organic Light-Emitting Diodes.
ACS Appl Mater Interfaces
January 2025
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
Crystalline organic semiconductors, recognized for their highly ordered structures and high carrier mobility, have emerged as a focal point in the field of high-performance optoelectronic devices. Nevertheless, the intrinsic unipolar properties, characterized by imbalanced hole and electron transport capabilities, have continuously represented a significant challenge in the advancement of high-performance crystalline thin-film organic light-emitting diodes (C-OLEDs). Here, a bipolar solid-solution thin film with a maintained crystal structure has been fabricated using 2-(4-(9H-carbazol-9-yl)phenyl)-1(3,5-difluorophenyl)-1H-phenanthro [9,10-d]imidazole (2FPPICz) and 4-(1-(3,5-difluorophenyl)-1H-imidazo[4,5-][1,10]phenanthrolin-2-yl)-N,N-diphenylaniline (2Fn) via a weak epitaxial growth (WEG) process, exhibiting nearly equivalent hole and electron mobilities (10-10 cm V s).
View Article and Find Full Text PDFControllable Self-Assembly Morphologies of PPV-Based Block Copolymers.
Chemistry
January 2025
Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China.
Poly(p-phenylenevinylene) (PPV) is a classic semiconducting π-conjugated polymer with outstanding optical and electronic properties, which shows important applications in the fields of optoelectronic, such as organic light-emitting diodes (OLEDs), organic solar cells (OSCs), and organic field-effect transistors (OFETs). In the working process of the device, the microstate of PPV decides its property. Therefore, it is significant to achieve ordered morphologies based on PPV at micro scale.
View Article and Find Full Text PDFMulti-Emitting Ratiometric Temperature Sensing and Tunable White Light Emitting Based on Effective Energy Transfer in a Lanthanide-Brønsted Acidic Ionic Liquid Coordination Polymer.
Inorg Chem
January 2025
Department of Chemistry, Beijing Technology and Business University, Beijing 100048, China.
Isostructured lanthanide-Brønsted acidic ionic liquid coordination polymers, {[Ln(CHNO)(HO)]Cl} (LnIMDC(HO), Ln = Eu, Gd, or Tb, CHNO = [IMDC]) and {[EuTb(CHNO)(HO)]Cl} (EuTbIMDC(HO))), have been synthesized using 1,3-bis(carboxymethyl) imidazolium chloride ([HIMDC]Cl) as linkers. LnIMDC(HO) (Ln = Eu or Tb) and EuTbIMDC(HO) exhibit good temperature sensing performance over a wide temperature range with maximum sensitivities of 2.73%·K (392 K) and 2.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!