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Updated: Jan 7, 2026

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Simple Process for Flexible Light-Extracting QD Film and White OLED.

Eun Jeong Bae1,2, Tae Jeong Hwang2, Geun Su Choi1,2

  • 1Display and Nanosensor Laboratory, Department of Electrical Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.

Micromachines
|December 31, 2025
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This summary is machine-generated.

Flexible quantum dot (QD) films offer enhanced color conversion and light extraction for next-generation displays. This cost-effective method improves OLED efficiency and enables white light generation for displays and lighting applications.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Quantum dots (QDs) exhibit high color purity, photoluminescence, and power efficiency, making them ideal for advanced displays.
  • Flexible films are crucial for next-generation electronic devices, including displays and lighting.

Purpose of the Study:

  • To develop a simple, cost-effective method for fabricating flexible QD films.
  • To enhance light extraction efficiency and enable color conversion for OLED applications.
  • To demonstrate the potential of QD films for creating white light.

Main Methods:

  • Fabrication of single- and multiple-layer flexible QD/PDMS composite films.
  • Utilizing reactive ion etching (RIE) to create low-density structures for enhanced light extraction.
Keywords:
flexible color conversionlight extractionorganic light-emitting diodes (OLEDs)quantum dot (QD)white OLED

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  • Integrating QD/PDMS films as external layers onto OLEDs.

    • Main Results:

    • Achieved excellent light extraction efficiency up to 9.2% with QD/PDMS composite films.
    • Demonstrated effective color conversion capabilities of the QD films.
    • Successfully produced white light (CIEx,y = 0.28, 0.41) by combining QD/PDMS films with greenish-blue OLEDs.

    Conclusions:

    • The presented method offers a simple, cost-effective alternative for fabricating flexible QD films.
    • QD/PDMS composite films show significant potential for enhancing OLED performance in displays and lighting.
    • This approach facilitates broad applications in flexible displays and solid-state lighting.