Aurivillius ferroelectrics materials with layer perovskite structure, spontaneous polarization and ferro-pyro-phototronic effect afford a promising avenue for self-powered photodetectors. Nevertheless, poor photo-response caused by weak remanent polarization and low absorption coefficient hinders their further application. Herein, we demonstrate an excellent self-powered photodetector in nanosheets-assembled Bi microspheres array/Nd-doped Bi₄Ti₃O₁₂ [Bi_3.8Nd_0.2Ti₃O₁₂] nanofibers heterostructured, which can rationally couple between ferroelectric polarization and ferro-pyro-phototronic effect in Aurivillius ferroelectric Bi_3.8Nd_0.2Ti₃O₁₂ and plasmonic effect in non-noble metal Bi. Firstly, an A-site doping with lanthanoid cation Nd³⁺ and dimension lowering strategy is proposed to improve the ferroelectric properties by reducing the oxygen vacancy concentration and coercive force field of Bi₄Ti₃O₁₂ nanofibers through electrospinning method. Furthermore, the Bi nanosheets-assembled microspheres array allowing multiple reflection and scattering of incident light is introduced to enhance the local electromagnetic field and light absorption of Bi_3.8Nd_0.2Ti₃O₁₂. Ultimately, the Bi@Bi_3.8Nd_0.2Ti₃O₁₂ with negatively polarized obtains a superior zero-bias photocurrent of -500 nA under 390 nm laser illumination, which is 195.31 and 22.16 times higher than unpolarized Bi₄Ti₃O₁₂ and Bi_3.8Nd_0.2Ti₃O₁₂, respectively. Simultaneously, an outstanding detectivity (8.11 ×10¹¹ Jones) and fast photoresponse time (57/114 µs) are correspondingly achieved. Our research provides a reliable way to simultaneously realize large ferroelectric polarization and high light absorption for jointly manipulation of electrons and photons in self-powered optoelectronic devices.

具有层状钙钛矿结构、自发极化和铁热光子效应的 Aurivillius 铁电材料为自供电光电探测器提供了一条有前途的途径。然而，弱剩余偏振和低吸收系数导致的光响应差阻碍了它们的进一步应用。_{在此，我们在纳米片组装的 Bi 微球阵列/Nd 掺杂的 Bi 4} Ti ₃ O ₁₂ [Bi _3.8 Nd _0.2 Ti ₃ O ₁₂ ] 异质结构纳米纤维中展示了一种出色的自供电光电探测器，它可以在铁电极化和铁电极化之间合理耦合。 Aurivillius 铁电体 Bi _3.8 Nd中的热光电子效应_0.2 Ti ₃ O ₁₂和非贵金属Bi中的等离子体效应。首先，提出了A位掺杂镧系阳离子Nd ^{3+和降维策略，通过静电纺丝方法降低Bi} ₄ Ti ₃ O ₁₂纳米纤维的氧空位浓度和矫顽力场来改善铁电性能。_{此外，引入允许入射光多次反射和散射的Bi纳米片组装微球阵列以增强Bi 3.8} Nd _0.2 Ti ₃ O ₁₂的局部电磁场和光吸收。最终，Bi@Bi_{负极化的3.8} Nd _0.2 Ti ₃ O ₁₂在390 nm激光照射下获得了-500 nA的优异零偏光电流，比未极化的Bi 4 Ti 3 _O 12_和Bi _3.8 Nd _0.2 Ti ₃ O_分别高195.31和22.16倍₁₂，分别。同时，具有出色的检测率（8.11 ×10 ¹¹Jones) 和快速光响应时间 (57/114 µs) 也相应地实现了。我们的研究提供了一种可靠的方法来同时实现大铁电极化和高光吸收，以联合操纵自供电光电器件中的电子和光子。