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<p>Stretchable displays are the key components for next-generation flexible electronics, playing a critical role in interactive human–machine interfaces. Stretchable alternating current electroluminescent devices, one of the most promising methods for achieving stretchable displays, face challenges such as high driving alternating voltages and frequencies. Herein, we employ a high-<i>k</i> dielectric gel as the emitting matrix, enabling a stretchable electroluminescent device with a turn-on voltage of 13 V (0.19 V µm<sup>-1</sup>) at 50 Hz and a maximum luminance of 1944.7 cd m<sup>-2</sup> at 2.5 V µm<sup>-1</sup> with 1 kHz. Moreover, the gel-based devices exhibit a high elongation up to 600%. We further employ fluorescent electrodes to achieve multi-color display of Yellow, Green, and Red without complicated structures. We also assemble a colorful display capable of dynamically exhibiting real-time information. These features highlight the material’s considerable performance and demonstrate its transformative potential for wearable electronics and next-generation flexible displays.</p>

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Ultra low-field-emission stretchable electroluminescent devices enabled by a transparent and high-κ dielectric gel

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月17日

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  • Zupeng Liu,
  • Zhao Liu,
  • Xia Lei,
  • Yujue Yang,
  • Titao Jing

摘要

Stretchable displays are the key components for next-generation flexible electronics, playing a critical role in interactive human–machine interfaces. Stretchable alternating current electroluminescent devices, one of the most promising methods for achieving stretchable displays, face challenges such as high driving alternating voltages and frequencies. Herein, we employ a high-k dielectric gel as the emitting matrix, enabling a stretchable electroluminescent device with a turn-on voltage of 13 V (0.19 V µm-1) at 50 Hz and a maximum luminance of 1944.7 cd m-2 at 2.5 V µm-1 with 1 kHz. Moreover, the gel-based devices exhibit a high elongation up to 600%. We further employ fluorescent electrodes to achieve multi-color display of Yellow, Green, and Red without complicated structures. We also assemble a colorful display capable of dynamically exhibiting real-time information. These features highlight the material’s considerable performance and demonstrate its transformative potential for wearable electronics and next-generation flexible displays.