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説明:

All-inorganic cesium lead halide perovskite quantum dots (QDs) have emerged as promising materials for next-generation optoelectronic devices due to their exceptional photoluminescence (PL) properties, including high quantum yields and narrow emission line widths. However, unlocking their full potential requires innovative strategies to further enhance and precisely tune their fluorescence efficiency. In this work, we present a novel 0D-2D-3D mixed-dimensional van der Waals (vdW) heterostructure comprising CsPbBr3 QDs, multilayer hexagonal boron nitride (hBN), and a gold (Au) nanoparticle film, achieving a remarkable 7-fold PL enhancement. We attribute this enhancement to the synergy of plasmon-induced enhancement of the incident electromagnetic field and an increased spontaneous emission rate via the Purcell effect, optimized by tuning the hBN spacer thickness to 26 nm. This heterostructure design provides new insights into metal-enhanced photoluminescence for perovskite quantum dots, and it offers a scalable platform to enhance efficiency in future optoelectronic applications.

権利情報:

• In Copyright
  

  This document is the Accepted Manuscript version of a Published Article that appeared in final form in ACS Applied Materials & Interfaces, copyright © 2025 American Chemical Society. To access the final published article, see https://doi.org/10.1021/acsami.5c05063.

キーワード: Perovskite quantum dots, van der Waals heterostructure, Photoluminescence enhancement

刊行年月日: 2025-06-11

出版者: American Chemical Society (ACS)

掲載誌:

• ACS Applied Materials & Interfaces (ISSN: 19448252) vol. 17 issue. 23 p. 34784-34793

研究助成金:

• Ministry of Education, Culture, Sports, Science and Technology
• Core Research for Evolutional Science and Technology JPMJCR24A5
• Japan Society for the Promotion of Science 21H05233
• Wuhan Natural Science Foundation 2024040801020219
• Japan Society for the Promotion of Science 23H02052
• Japan Science and Technology Agency
• Fundamental Research Funds for the Central Universities
• National Natural Science Foundation of China 12374357

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI:

公開URL: https://doi.org/10.1021/acsami.5c05063

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更新時刻: 2026-07-29 11:36:22 +0900

MDRでの公開時刻: 2026-07-29 14:28:28 +0900