<p>Organic thin-film transistors (OTFTs) are widely recognized as promising building blocks for next-generation flexible and wearable electronics. However, scalable fabrication of high-density OTFT arrays for active-matrix applications remains highly challenging, primarily due to the incompatibility of conventional photolithography with organic semiconductors. Here, we report an all-photolithographic strategy that enables the scalable fabrication of flexible OTFT arrays with both high device density and superior charge transport characteristics. By combining synergistic interfacial modulation and dual-protection photolithography strategy of organic semiconductors, we successfully fabricated transistor arrays exhibiting an average mobility above 1.0 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup> and on/off ratios of ~ 10<sup>5</sup>. This scalable method further enables an integration density of 6.25 × 10<sup>4</sup>&#xa0;cm<sup>−2</sup>, which is one of the highest densities reported to date for full-photolithographic OTFT active-matrix arrays. Moreover, we demonstrate seamless integration of OTFT active-matrix arrays with organic light-emitting diodes (OLEDs), yielding all-organic active-matrix OLED (AMOLED) arrays. These devices exhibit stable electroluminescence, ultralight weight (~ 24.3&#xa0;g&#xa0;m<sup>−2</sup>), excellent flexibility, and skin-like display functionality with reliable pixel-level addressing. This work establishes a universal and scalable route toward high-density organic electronic systems, opening new opportunities for flexible displays, electronic skin, and next-generation wearable technologies.</p>

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Full-Photolithographic High-Density Skin-Like Transistor Arrays for All-Organic Active-Matrix Displays

  • Peng Xue,
  • Juntong Li,
  • Xiaoli Zhao,
  • Yanping Ni,
  • Hongyan Yu,
  • Xianghui Liu,
  • Bowen Xiang,
  • Yao Fu,
  • Junru Zhang,
  • Baoying Sun,
  • Pengbo Xi,
  • Xiang Song,
  • Yijun Shi,
  • Guodong Zhao,
  • Mingxin Zhang,
  • Yanhong Tong,
  • Qingxin Tang,
  • Yichun Liu

摘要

Organic thin-film transistors (OTFTs) are widely recognized as promising building blocks for next-generation flexible and wearable electronics. However, scalable fabrication of high-density OTFT arrays for active-matrix applications remains highly challenging, primarily due to the incompatibility of conventional photolithography with organic semiconductors. Here, we report an all-photolithographic strategy that enables the scalable fabrication of flexible OTFT arrays with both high device density and superior charge transport characteristics. By combining synergistic interfacial modulation and dual-protection photolithography strategy of organic semiconductors, we successfully fabricated transistor arrays exhibiting an average mobility above 1.0 cm2 V−1 s−1 and on/off ratios of ~ 105. This scalable method further enables an integration density of 6.25 × 104 cm−2, which is one of the highest densities reported to date for full-photolithographic OTFT active-matrix arrays. Moreover, we demonstrate seamless integration of OTFT active-matrix arrays with organic light-emitting diodes (OLEDs), yielding all-organic active-matrix OLED (AMOLED) arrays. These devices exhibit stable electroluminescence, ultralight weight (~ 24.3 g m−2), excellent flexibility, and skin-like display functionality with reliable pixel-level addressing. This work establishes a universal and scalable route toward high-density organic electronic systems, opening new opportunities for flexible displays, electronic skin, and next-generation wearable technologies.