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<p>Confined growth of metal halide perovskite quantum dots (QDs) in porous matrices yields improved stability and sensitivity for their implementation in luminescent chemical sensing applications. Here, we realized the synthesis of highly stable (water, photo, and thermal) and luminescent CsPbX<sub>3</sub> QDs within the nanoporous glass (NG). This is achieved by a nano-confined aqueous synthesis of CsPbBr<sub>3</sub> QDs in Pb-anchored NG. Benefiting from strong Pb–O–Si chemical bonding between the perovskite QDs and the NG matrix, the stability of the encapsulated perovskite QDs is significantly enhanced. The emission of the perovskite NG can be tuned from 440 to 760 nm. By integrating green- and red-emitting perovskite NG onto a blue LED chip, stable WLEDs were successfully fabricated. This facile approach enables the integration of ultra-stable perovskite QDs within transparent porous monoliths toward diverse luminescent chemical sensing applications.</p>

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Highly stable halide perovskite quantum dots embedded in nanoporous glass via Pb2+ anchored nano-confined aqueous synthesis

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Qixuan Lu,
  • Kai Feng,
  • Daqian Wu,
  • Fengxian Zhou,
  • Xiaowu Wang,
  • Xinyi Kuang,
  • Zeyu Zhang,
  • Zhengzheng Liu,
  • Zhiping Hu,
  • Jin He,
  • Juan Du

摘要

Confined growth of metal halide perovskite quantum dots (QDs) in porous matrices yields improved stability and sensitivity for their implementation in luminescent chemical sensing applications. Here, we realized the synthesis of highly stable (water, photo, and thermal) and luminescent CsPbX3 QDs within the nanoporous glass (NG). This is achieved by a nano-confined aqueous synthesis of CsPbBr3 QDs in Pb-anchored NG. Benefiting from strong Pb–O–Si chemical bonding between the perovskite QDs and the NG matrix, the stability of the encapsulated perovskite QDs is significantly enhanced. The emission of the perovskite NG can be tuned from 440 to 760 nm. By integrating green- and red-emitting perovskite NG onto a blue LED chip, stable WLEDs were successfully fabricated. This facile approach enables the integration of ultra-stable perovskite QDs within transparent porous monoliths toward diverse luminescent chemical sensing applications.