An Aromatic Diamine Molecule as the A -Site Solute for Highly Durable and Efficient Perovskite Solar Cells

Small Methods ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 1800361 ◽  
Author(s):  
Jinhyun Kim ◽  
Taehyun Hwang ◽  
Byungho Lee ◽  
Sangheon Lee ◽  
Kimin Park ◽  
...  
Small Methods ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 1800052
Author(s):  
Jinhyun Kim ◽  
Taehyun Hwang ◽  
Byungho Lee ◽  
Sangheon Lee ◽  
Kimin Park ◽  
...  

2018 ◽  
Vol 8 (14) ◽  
pp. 1870062
Author(s):  
Chang Woo Myung ◽  
Jeonghun Yun ◽  
Geunsik Lee ◽  
Kwang S. Kim

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 732 ◽  
Author(s):  
Guangdong Li ◽  
Xiaoping Zou ◽  
Jin Cheng ◽  
Dan Chen ◽  
Yujun Yao ◽  
...  

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.


Author(s):  
Daniel Ramírez ◽  
Franklin Jaramillo

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.


2020 ◽  
Vol 30 (34) ◽  
pp. 2000794 ◽  
Author(s):  
Weiyin Gao ◽  
Changshun Chen ◽  
Chenxin Ran ◽  
Hao Zheng ◽  
He Dong ◽  
...  

2019 ◽  
Vol 12 (7) ◽  
pp. 2264-2272 ◽  
Author(s):  
Dominic W. Ferdani ◽  
Samuel R. Pering ◽  
Dibyajyoti Ghosh ◽  
Peter Kubiak ◽  
Alison B. Walker ◽  
...  

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


2017 ◽  
Vol 5 (41) ◽  
pp. 21858-21865 ◽  
Author(s):  
Chen Hu ◽  
Yang Bai ◽  
Shuang Xiao ◽  
Teng Zhang ◽  
Xiangyue Meng ◽  
...  

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).


2018 ◽  
Vol 8 (14) ◽  
pp. 1702898 ◽  
Author(s):  
Chang Woo Myung ◽  
Jeonghun Yun ◽  
Geunsik Lee ◽  
Kwang S. Kim

2020 ◽  
Vol 980 ◽  
pp. 97-106
Author(s):  
Hao Xiang Duan

Organic-inorganic hybrid perovskite solar cells (PSCs) has attracted growing attention in recent years due to its outstanding photovoltaic performance. After extensive studies in material designs and device engineering, the efficiencies of PSCs have been improved to 24.2%. On the other hand, the inadequate stability of PSCs is hindering the application to real life. Starting with the stability of organic-inorganic PSCs, this article analyzed and concluded the impact of doping A-site and X-site ions on the stability of perovskite respectively. Next, it put forward the prospects for possible development directions of this field in the future.


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