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Related Concept Videos

Photoluminescence: Applications01:14

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Step-by-Step Guide for Harnessing Organic Light Emitting Diodes by Solution Processed Device Fabrication of a TADF Emitter
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Two-Dimensional Stretchable Organic Light-Emitting Devices with High Efficiency.

Da Yin1, Jing Feng1, Nai-Rong Jiang1

  • 1State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering and ‡College of Physics, Jilin University , 2699 Qianjin Street, Changchun 130012, China.

ACS Applied Materials & Interfaces
|October 30, 2016
PubMed
Summary
This summary is machine-generated.

Researchers developed highly efficient two-dimensional stretchable organic light-emitting devices (2D SOLEDs) using an ultrathin, ultraflexible OLED and a buckling process. These devices achieve record luminous efficiency, paving the way for advanced wearable electronics and electronic skins.

Keywords:
high-efficiencymechanical robustnessorganic light-emitting devicestwo-dimensional stretchableultraflexible

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Device Physics

Background:

  • Two-dimensional stretchable organic light-emitting devices (2D SOLEDs) offer advantages over 1D SOLEDs for applications like wearable electronics and electronic skins.
  • Current 2D SOLEDs suffer from low luminous efficiency due to material and structural limitations caused by anisotropic stress during stretching.
  • Improving the efficiency and durability of 2D SOLEDs is crucial for their commercial viability.

Purpose of the Study:

  • To demonstrate 2D SOLEDs with enhanced stretchability and electroluminescence performance.
  • To overcome the limitations hindering the practical application of 2D SOLEDs.
  • To achieve high luminous efficiency in 2D SOLEDs suitable for commercial use.

Main Methods:

  • Fabrication of 2D SOLEDs using an ultrathin and ultraflexible OLED structure.
  • Implementation of a buckling process to manage stress in the 2D stretchable system.
  • Characterization of device performance under various tensile strain conditions.

Main Results:

  • Achieved 2D SOLEDs with excellent stretchability, enduring up to 50% tensile strain in area.
  • Demonstrated a maximum luminous efficiency of 79 cd A⁻¹, the highest reported for 2D SOLEDs to date.
  • Confirmed device stability through continuous cyclic stretching with minimal performance variation.

Conclusions:

  • The developed 2D SOLEDs exhibit superior stretchability and electroluminescence efficiency.
  • The novel approach overcomes previous limitations, making 2D SOLEDs practical for commercial applications.
  • These findings highlight the significant potential of the demonstrated 2D SOLEDs for diverse applications in flexible and wearable electronics.