A balanced cation exchange reaction toward highly uniform and pure phase FA1−xMAxPbI3 perovskite films

2016 ◽  
Vol 4 (37) ◽  
pp. 14437-14443 ◽  
Author(s):  
Fuxiang Ji ◽  
Li Wang ◽  
Shuping Pang ◽  
Peng Gao ◽  
Hongxia Xu ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Exchange Reaction ◽  
Organic Cation ◽  
Cation Exchange Reaction ◽  
Pure Phase ◽  
Highly Uniform

The organic cation exchange temperature was optimized toward the formation of highly uniform FA based perovskite films.

scholarly journals Ethylammonium Lead Iodide Formation in MAPbI3 Precursor Solutions by DMF Decomposition and Organic Cation Exchange Reaction

Crystals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 162
Author(s):  
Ryan Taoran Wang ◽  
Elton Enchong Liu ◽  
Alex Fan Xu ◽  
Lory Wenjuan Yang ◽  
Jason Yuanzhe Chen ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Exchange Reaction ◽  
Organic Cation ◽  
Annealing Process ◽  
Diffraction Measurement ◽  
X Ray Diffraction ◽  
Lead Iodide ◽  
X Ray ◽  
Cation Exchange Reaction

Extra peaks have constantly been observed in the X-ray diffraction measurement for the CH3NH3PbI3 film. Such mysteries have now been uncovered in this paper, in which powder X-ray diffraction, in situ X-ray diffraction, and scanning electron microscopy measurements were conducted, and these peaks were attributed to the ethylammonium lead iodide (CH3CH2NH3PbI3/EAPbI3). It was found that the formation of EAPbI3 was triggered by the breakdown of N, N-dimethylformamide (DMF), which was adopted as the solvent in the preparation of the precursor solutions. EAPbI3 was generated by the organic cation exchange reaction in the subsequent annealing process. A simple solution for this problem is proposed in this paper as well, which would hopefully help the community to eradicate this impurity.

NIR Enhancement of β-NaGdF4∶Yb3+,Tm3+ Nanocrystals via Cation Exchange Reaction

2017 ◽  
Vol 38 (10) ◽  
pp. 1267-1272
Author(s):  
贾明理 JIA Ming-li ◽  
张家骅 ZHANG Jia-hua
Keyword(s):  
Cation Exchange ◽  
Exchange Reaction ◽  
Cation Exchange Reaction

Multimode MicroRNA Sensing via Multiple Enzyme-Free Signal Amplification and Cation-Exchange Reaction

2019 ◽  
Vol 11 (40) ◽  
pp. 36476-36484 ◽  
Author(s):  
Piaopiao Chen ◽  
Xin Jiang ◽  
Ke Huang ◽  
Pingyue Hu ◽  
Xinqiong Li ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Exchange Reaction ◽  
Signal Amplification ◽  
Cation Exchange Reaction

Synthesis of ordered mesoporous crystalline CuS and Ag2S materials via cation exchange reaction

Nanoscale ◽  
2015 ◽  
Vol 7 (10) ◽  
pp. 4468-4474 ◽  
Author(s):  
Jun Wang ◽  
Weiming Xu ◽  
Haifeng Bao ◽  
Yifeng Shi
Keyword(s):  
Cation Exchange ◽  
Exchange Reaction ◽  
Ordered Mesoporous ◽  
Cation Exchange Reaction

Cation exchange reaction is a strong tool for the synthesis of new ionic nanomaterials.

Surface passivation enabled-structural engineering of I-III-VI2 nanocrystal photocatalysts

2020 ◽  
Vol 8 (19) ◽  
pp. 9951-9962 ◽  
Author(s):  
Yuemei Li ◽  
Jia Liu ◽  
Xiaodong Wan ◽  
Rongrong Pan ◽  
Bing Bai ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Exchange Reaction ◽  
Structural Engineering ◽  
Surface Passivation ◽  
Strong Binding ◽  
Cation Exchange Reaction

The reduction in In3+/Cu+ ratio and the presence of strong-binding ligand could enhance the density of surface copper vacancies and boost cation exchange reaction.

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