谢广文   Professor

谢广文,教授,博士,长期从事纳米材料、微晶与非晶态材料研究与应用,在纳米材料表面改性、非晶态催化材料等领域取得了许多创新性成果。近年来在《燃料化学学报》、Chemical Engineering Journal、Carbon、Green Energy & Environment、Journal of Materials Chemistry A、Applied Surface Science、 ACS Applied Materials & Interfaces、Journal of Power Sources、Renewable Energy、Surface and Coatings Technolo...Detials

A balanced cation exchange reaction toward highly uniform and pure phase FA1-: XMAxPbI3perovskite films

Release time:2023-10-19  Hits:

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  • Abstract:Unlike traditional MAPbI3, methods for large scale fabrication ::H:of:H:: high quality FA based perovskite films are still lacking. In this paper, the organic cation exchange temperature is optimized toward the formation ::H:of:H:: highly uniform FA based perovskite films. Under optimized conditions, the cation diffusion speed within the perovskite film is extremely enhanced and the time constant is reduced ∼20 times. The shortened dipping time and mild reaction conditions can efficiently restrict the undesirable phase transition and preserve the film morphology. Fundamental insight into this solid-liquid reaction has been obtained by combining photophysical, XRD and SEM characterizations. The optimized FAxMA1-xPbI3with x ≈ 0.75 presents the highest efficiency ::H:of:H:: 15.5% with less hysteresis. © 2016 The Royal Society ::H:of:H:: Chemistry.
  • Volume:4
  • Issue:37
  • Translation or Not:no