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FAPbI3 perovskites have garnered considerable interest owing to their outstanding thermal stability, along with near‐theoretical bandgap and efficiency. However, their inherent phase instability presents a substantial challenge to the long‐term stability of devices. Herein, this issue through a dual‐strategy of self‐assembly 3D/0D quasi‐core–shell structure is tackled as an internal encapsulation...
The pinhole‐free and defect‐less perovskite film is crucial for achieving high efficiency and stable perovskite solar cells (PSCs), which can be prepared by widely used anti‐solvent crystallization strategies. However, the involvement of anti‐solvent requires precise control and inevitably brings toxicity in fabrication procedures, which limits its large‐scale industrial application. In this work,...
Perovskite solar cells (PSCs) have received great attention due to their outstanding performance and their low processing costs. To boost their performance, one approach is to reinforce the built‐in electric field (BEF) to promote oriented carrier transport. The BEF is maximized by reinforcing the work function difference between cathode and anode (Δμ1) and increasing the work function difference...
A facile and new solution-based synthesis for the preparation of Nb2O5 nanoparticles (NPs) is firstly introduced. Chain-like particles of 30 to 50nm are synthesized through a hydrolysis reaction using an ethanol-based NbCl5 precursor and H2O2 as a strong oxidizer by UV treatment. A uniform dispersion of ultrasmall Nb2O5 NPs with a quantum size of 2 to 5nm is further obtained by modifying the procedure...
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