我們使用單軸電紡法合成了MAPbBr3鈣鈦礦納米纖維。在這個過程中，我們採用PAN和PMMA兩種聚合物混合作為基質，以實現穩定性和光學性能的平衡。PAN提供了疏水特性，保護鈣鈦礦免受潮濕的影響，並通過其氮中孤對電子抑制缺陷的形成。PMMA具有透明性和低傳播損耗，非常適合光學上的應用。我們得到的納米纖維呈現出獨特的竹狀結構，這歸因於MAPbBr3的高濃度以及PAN和PMMA在溶劑蒸發過程中的熱誘導相分離。這些由聚合物包裹的鈣鈦礦納米纖維表現出強大而穩定的螢光效應及壽命，即使在長時間浸泡在水中後仍然保持穩定。此外，聚合物包覆還提高了鈣鈦礦在脈衝雷射照射下的抗紫外光性能。值得注意的是，竹狀纖維的節點處形成了高密度的MAPbBr3團簇或單晶，在脈衝雷射激發下呈現出雷射效應。觀察到的波導雷射行為可以歸因於Fabry-Pérot（FP）腔體，並且在激發功率超過閾值時形成。我們的這項研究展示了通過電紡法可以完成在混合鈣鈦礦及聚合物納米纖維中形成激光共振腔的可能性，並充分利用鈣鈦礦的增益介質特性，為光學元件的未來發展提供了新的方向。

MAPbBr3 perovskite nanofibers were synthesized using the uniaxial electrospinning method. A blend of PAN and PMMA polymers was used as the matrix, aiming to achieve a balance between stability and optical performance. PAN provided hydrophobic characteristics for moisture protection and also helped suppress defects due to its nitrogen lone pairs. PMMA, known for its transparency and low propagation losses, was well-suited for photonic applications. The resulting nanofibers exhibited a distinct bamboo-like structure, attributed to the concentrated MAPbBr3 and the thermally induced phase separation of PAN and PMMA during solvent evaporation. These perovskite nanofibers, encapsulated by polymers, demonstrated robust and stable fluorescence even after immersion in water for extended periods. Additionally, the polymer coating enhanced the UV resistance of the perovskite under pulse laser illumination. Notably, high-density clusters or single crystals of MAPbBr3 formed at the junctions of the bamboo-like fibers, exhibiting lasing effects under pulsed laser excitation. The observed waveguide lasing behavior was attributed to the Fabry-Pérot (FP) cavity when the excitation power exceeded the threshold. This research provides insights into the future development of optical components by showcasing the formation of laser resonant cavities within hybrid perovskite@polymer nanofibers using electrospinning, capitalizing on the gain medium properties of perovskite.

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