Tuning the A-site cation and X-site anion composition of CH3NH3PbI3 perovskite material for efficient planar perovskite solar cells

2019 ◽  
Vol 293 ◽  
pp. 371-379 ◽  
Author(s):  
Yangyang Cai ◽  
Lai Xie ◽  
Zongbao Zhang ◽  
Yang Zhou ◽  
Hui Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Perovskite Material ◽  
Anion Composition ◽  
A Site

scholarly journals Ultrathin and compact electron transport layer made from novel water-dispersed Fe3O4 nanoparticles to accomplish UV-stable perovskite solar cells

2021 ◽  
Author(s):  
Song Fang ◽  
Bo Chen ◽  
Bangkai Gu ◽  
Linxing Meng ◽  
Hao Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Perovskite Material ◽  
Main Factors ◽  
Induced Decomposition

UV induced decomposition of perovskite material is one of main factors to severely destroy perovskite solar cells for instability. Here we report a UV stable perovskite solar cell with a...

scholarly journals Perovskite Solar Cells: A New Perspective on the Role of A-Site Cations in Perovskite Solar Cells (Adv. Energy Mater. 14/2018)

2018 ◽  
Vol 8 (14) ◽  
pp. 1870062
Author(s):  
Chang Woo Myung ◽  
Jeonghun Yun ◽  
Geunsik Lee ◽  
Kwang S. Kim
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
New Perspective ◽  
A Site ◽  
Energy Mater

scholarly journals Impact of Perovskite Composition on Film Formation Quality and Photophysical Properties for Flexible Perovskite Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 732 ◽  
Author(s):  
Guangdong Li ◽  
Xiaoping Zou ◽  
Jin Cheng ◽  
Dan Chen ◽  
Yujun Yao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Film Formation ◽  
Photophysical Properties ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Precursor Solution Concentration ◽  
Composition Optimization ◽  
A Site ◽  
Low Temperature Process

In recent years, flexible perovskite solar cells have drawn tremendous attention in the field of wearable devices, and optimization of perovskite composition plays an important role in improving film quality and photophysical properties. At present, some researchers have only studied A-site organic cations mixing or X-site halide anions mixing in the ABX3 structure of perovskite, but there are few reports on co-mixing of A-site and X-site ions in flexible perovskite solar cells. In this paper, we mainly try to study the effects of different concentrations of mixed formamidine methylamine halide (FAxMA1-xBrxClyI1-x-y) precursor solutions on the quality and photophysical properties of perovskite films under low temperature process. We conclude that the film quality and photophysical properties reached the best results when the optimized precursor solution concentration was 60:6:6. The investigation on composition optimization in this experiment laid the foundation for the improvement of the performance of flexible perovskite solar cells. We also use the results of this experiment to prepare flexible perovskite solar cells based on carbon electrodes, which are expected to be applied in other flexible optoelectronic or electro-optical devices.

scholarly journals Design of two-dimensional perovskite solar cells with superior efficiency and stability

2021 ◽  
Author(s):  
Daniel Ramírez ◽  
Franklin Jaramillo
Keyword(s):  
Solar Cells ◽  
Rapid Development ◽  
Perovskite Solar Cells ◽  
Organic Cations ◽  
Two Dimensional ◽  
Layered Systems ◽  
Initial Value ◽  
Fabrication And Characterization ◽  
A Site

Pervskite solar cells have attracted extensive attention from researchers worldwide due to their rapid development and efficiency. Nevertheless, stability is still an issue that limits the advance of this technology. In this work, we present the fabrication and characterization of two-dimensional perovskites of the Ruddlesden-Popper’s family (A)2(MA)n−1PbnI3n+1 (three different A-site large cations were investigated: A=n-propylammonium, t-Butylammonium or Benzylammonium). The modulation of the large organic cations increased the band gap of the materials and improved moisture and thermal stability, making it possible to fabricate PSCs. Even though the organic interlayers intrinsically reduce the transport properties of the devices and therefore lower currents are obtained in the layered systems, a remarkable efficiency of 10.35% was obtained for (BUA)2(MA)2Pb3I10, with superior stability, and therefore, it was possible to retain 68% of its initial value after 1700 h for devices without encapsulation.

scholarly journals Efficient Ag-Doped Perovskite Solar Cells Fabricated in Ambient Air

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1521
Author(s):  
Jiabin Hao ◽  
Zeming Wang ◽  
Huiying Hao ◽  
Guanlei Wang ◽  
Hongcheng Gao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spin Coating ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Ambient Air ◽  
Nucleation Density ◽  
Perovskite Material ◽  
Coating Method ◽  
One Step ◽  
Improved Performance

So far, it is still a great challenge to prepare high efficiency organic–inorganic perovskite solar cells in ambient air. Specifically, moisture is easily combined with the perovskite material during the spin-coating process, which result in porous perovskite films with poor surface morphology. In this study, we investigated crystalline Ag-doped perovskite films by a one-step spin-coating method in air with 30–40% relative humidity (RH), in which ethyl acetate (EA) was used as antisolvent can absorb moisture in air to reduced nucleation density. More significantly, EA is a feasible and environmentally friendly solvent to replace highly toxic solvent. Moreover, 1.0% Ag-doped device shows a highest power conversion efficiency (PCE) of 14.36%. The improved performance is not only ascribed to the superior CH3NH3PbI3 film with high crystallinity but to the versatile tunability of energy band structure.

A‐Site Cation Engineering of Metal Halide Perovskites: Version 3.0 of Efficient Tin‐Based Lead‐Free Perovskite Solar Cells

2020 ◽  
Vol 30 (34) ◽  
pp. 2000794 ◽  
Author(s):  
Weiyin Gao ◽  
Changshun Chen ◽  
Chenxin Ran ◽  
Hao Zheng ◽  
He Dong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Lead Free ◽  
Halide Perovskites ◽  
A Site

scholarly journals Solar Cells: An Aromatic Diamine Molecule as the A -Site Solute for Highly Durable and Efficient Perovskite Solar Cells (Small Methods 1/2019)

Small Methods ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 1800052
Author(s):  
Jinhyun Kim ◽  
Taehyun Hwang ◽  
Byungho Lee ◽  
Sangheon Lee ◽  
Kimin Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Aromatic Diamine ◽  
A Site

scholarly journals Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells

2019 ◽  
Vol 12 (7) ◽  
pp. 2264-2272 ◽  
Author(s):  
Dominic W. Ferdani ◽  
Samuel R. Pering ◽  
Dibyajyoti Ghosh ◽  
Peter Kubiak ◽  
Alison B. Walker ◽  
...  
Keyword(s):  
Solar Cells ◽  
Ion Transport ◽  
Perovskite Solar Cells ◽  
Activation Energies ◽  
Cation Substitution ◽  
Lead Iodide ◽  
Iodide Ion ◽  
A Site

Perovskite solar cells containing a mixture of A-site cations show increased activation energies for iodide diffusion.

Interfacial modification of various alkali metal cations in perovskite solar cells and their influence on photovoltaic performance

2020 ◽  
Vol 44 (21) ◽  
pp. 8902-8909
Author(s):  
Yinyi Huang ◽  
Shina Li ◽  
Chaorong Wu ◽  
Shuo Wang ◽  
Chengyan Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Alkali Metal ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Alkali Metal Cations ◽  
Interfacial Modification ◽  
Perovskite Material

The electron transport layer (ETL) between the perovskite material and cathode plays an important role in planar perovskite solar cells.

Tuning the A-site cation composition of FA perovskites for efficient and stable NiO-based p–i–n perovskite solar cells

2017 ◽  
Vol 5 (41) ◽  
pp. 21858-21865 ◽  
Author(s):  
Chen Hu ◽  
Yang Bai ◽  
Shuang Xiao ◽  
Teng Zhang ◽  
Xiangyue Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Temperature ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Cation Composition ◽  
Cation Mixing ◽  
A Site

Cation mixing has proved to be effective in stabilizing the high-temperature phase of formamidinium (FA)-based perovskites, affording high-performance n–i–p perovskite solar cells (PSCs).

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