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Updated: Jan 17, 2026

Development of Efficient OLEDs from Solution Deposition
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Giant Shell Nanorods for High-Efficiency and Low-Roll-Off Light-Emitting Diodes.

Xiaonan Liu1, Yicheng Zeng1, Yuan Liu2

  • 1Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China.

Advanced Materials (Deerfield Beach, Fla.)
|September 23, 2025
PubMed
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Articles linked to this work by shared authors, journal, and citation graph.

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Selective radial thickness growth of compositionally graded shells on colloidal quantum rods for more efficient light-emitting diodes.

Nature communications·2026
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Spin-Exchange Interaction in Mn<sup>2+</sup>-Doped InP Colloidal Quantum Dots Revealed through Correlated Magneto-Optical Spectroscopy and Transient Carrier Dynamics.

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Unlocking the Orbital Interaction Mode in Li-O<sub>2</sub> Batteries.

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Self-Consistent Cation-Anion Integration Eliminates Passivation Crosstalk for Inverted Perovskite Solar Cells.

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Unveiling the doping effect of mixed-halide CsPb(Br<sub>1-<i>n</i></sub>X<sub><i>n</i></sub>)<sub>3</sub> (X = I, Cl) single crystals toward high-sensitivity radiation detection.

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Nanocrystal-Nucleus Template Strategy for Efficient Wide-Bandgap Perovskite Solar Cells with Enhanced Homogeneity and Energy-Level Alignment.

Advanced materials (Deerfield Beach, Fla.)·2025
This summary is machine-generated.

Giant-shell nanorod LEDs overcome efficiency roll-off issues. This new design enhances light-emitting diodes (LEDs) performance and stability, paving the way for advanced display technologies.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • 1D colloidal semiconductor nanorods (NRs) provide polarized emission and efficient light out-coupling for light-emitting diodes (LEDs).
  • Efficiency roll-off at high current densities in traditional NRs is caused by thin radial shells and random orientation, leading to leakage currents.
  • Existing nanorod synthesis methods often result in undesirable c-axial growth, limiting device performance.

Purpose of the Study:

  • To develop a novel nanorod structure that mitigates efficiency roll-off in LEDs.
  • To improve the radial shell growth and reduce the aspect ratio of nanorods.
  • To enhance the stability and performance of nanorod-based LEDs for high-definition displays.

Main Methods:

  • Introduction of fatty acid during synthesis to control nanorod growth, promoting radial shell formation over c-axial growth.
Keywords:
external quantum efficiencygiant shelllifetimeslight‐emitting diodesnanorodsroll‐off

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  • Fabrication of giant-shell CdSe/CdZnSe/CdS/CdZnS nanorods with a reduced aspect ratio (≈2.2).
  • Fabrication and characterization of nanorod-LEDs using the newly synthesized giant-shell nanorods.

    • Main Results:

    • Achieved near-unity photoluminescence quantum yield (PLQY) by minimizing interfacial defects and Auger recombination.
    • Demonstrated peak external quantum efficiency (EQE) of 23.4% and high luminance (289,000 cd/m²).
    • Significantly suppressed EQE roll-off at high current densities and achieved a T95 lifetime exceeding 10,000 hours at 1,000 cd/m².

    Conclusions:

    • The developed giant-shell nanorod design effectively alleviates electron leakage and improves LED performance.
    • This material strategy enables highly efficient and stable nanorod-LEDs with suppressed roll-off.
    • The findings lay the groundwork for realizing highly polarized nanorod-LEDs crucial for efficient high-definition displays.