Solvent-free blending of CsPbBr3 and commercial polymer: Interface-visualization, bandgap engineering and improved stability in 3D printing

Liu, Zhen; Xia, Xinshu; Xu, Siyu; Wu, Yanan; Xiao, liren; Cao, Changlin; Chen, Qinghua; Zhou, Weiming; Sun, Xiaoli; Du, Ke-Zhao

doi:10.1016/j.cej.2024.148965

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“…2b, the high-resolution transmission electron microscopy (HRTEM) image of the CsPbBr 3 @PMMA film shows that the interplanar spacing of the CsPbBr 3 @PMMA film is determined to be 0.294 nm, exhibiting good alignment with the (202) crystal plane of CsPbBr 3 . 33 The selected area electron diffraction pattern for the CsPbBr 3 @PMMA film illustrates that the CsPbBr 3 @PMMA film has a high crystallinity in Fig. 2c.…”

Section: Resultsmentioning

confidence: 92%

Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications

Lv,

Hao,

Yan

et al. 2024

J. Mater. Chem. C

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Section: Resultsmentioning

confidence: 92%

Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications

Lv,

Hao,

Yan

et al. 2024

J. Mater. Chem. C

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Enhanced Performance of CsPbBr₃ Nanocrystals via Dual Passivation

Sun,

Cheng,

Yang

et al. 2024

Adv Materials Inter

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Perovskite CsPbBr3 nanocrystals show excellent optical properties. However, the nanocrystals encounter a major challenge of poor stability. In this study, an effective approach is proposed for enhancing the stability of CsPbBr3 nanocrystals via a dual passivation strategy, where the dual passivation layer is composed of alumina (Al2O3) and polymer ethylene‐vinyl acetate (EVA). The Al2O3 coating on the CsPbBr3 surface is realized by in situ oxidation of trimethyl aluminum (TMA), which passivated the surface defects while blocking the intrusion of water and oxygen. The EVA film is formed by a solution method, which can further block the water and oxygen, and form the flexible composite with perovskite CsPbBr3 nanocrystals with enhanced stability toward water and heat. After soaking for 360 h and heating for 5 h, the photoluminescence (PL) intensity is higher than that without passivation. The polymer EVA packaging strategy provided CsPbBr3 with excellent extensibility and flexibility at 100% and 200% tensile rates, the PL intensity remains 91% and 88% of the initial intensity, which returns to the initial value after stretching. The unique dual‐protection structure significantly improves the water and thermal stability of the nanocrystals. The strategy might point out the direction for the future application of perovskites.

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Solvent-free blending of CsPbBr3 and commercial polymer: Interface-visualization, bandgap engineering and improved stability in 3D printing

Cited by 2 publications

References 64 publications

Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications

Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications

Enhanced Performance of CsPbBr₃ Nanocrystals via Dual Passivation

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Solvent-free blending of CsPbBr3 and commercial polymer: Interface-visualization, bandgap engineering and improved stability in 3D printing

Cited by 2 publications

References 64 publications

Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications

Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications

Enhanced Performance of CsPbBr3 Nanocrystals via Dual Passivation

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Product

Resources

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Enhanced Performance of CsPbBr₃ Nanocrystals via Dual Passivation