Novel ultra-stable and highly luminescent white light-emitting diodes from perovskite quantum dots - Polymer nanofibers through biaxial electrospinning

Dai Hua Jiang, Yi Hsuan Tsai, Loganathan Veeramuthu, Fang Cheng Liang, Lung Chin Chen, Chun Che Lin, Toshifumi Satoh, Shih Huang Tung, Chi Ching Kuo

研究成果: 雜誌貢獻文章

1 引文 斯高帕斯(Scopus)

摘要

Cesium lead halide perovskite quantum dots (QDs) have drawn extensive attention due to their excellent optical properties. However, their use is limited by poor stability. To enhance their stability, we electrospun perovskite-embedded fibers from composite CsPbX3 (X = Cl, Br, and I) perovskite QDs, blending with three polymers, poly(styrene-butadiene-styrene) (SBS), poly(methyl methacrylate) (PMMA), or polystyrene (PS), for the light-emitting diode (LED) applications. We found that the stretchable CsPbBr3@SBS fibers revealed the highest photoluminescence quantum yield, the CsPbBr3@PMMA fibers demonstrated a high thermal stability, and the CsPbBr3@PS fibers exhibited the best water-resistant stability. The photoluminescence intensity maintained 83% of its initial intensity for more than 3 months in water. Furthermore, the LED devices are manufactured from the blue chips and packaged with the core/shell red and green perovskite-based fibers by using biaxial electrospinning exhibited stable and highly efficient white luminescence. The luminance and efficiency are higher than 400% of the values of multilayered structures.

原文英語
文章編號111105
期刊APL Materials
7
發行號11
DOIs
出版狀態已發佈 - 十一月 1 2019

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ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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