Toward Efficient Perovskite Solar Cells by Planar Imprint for Improved Perovskite Film Quality and Granted Bifunctional Barrier

Author(s):  
Lu Huang ◽  
Zhi Xing ◽  
Xianglan Tang ◽  
Dengxue Li ◽  
Xiangchuan Meng ◽  
...  

Polycrystalline perovskite films generally have high-density defects due to the numerous crystal nucleus and randomly oriented fine grains in the film formation. These defects are commonly regarded as the source...

2021 ◽  
pp. 2002733
Author(s):  
Xu Zhang ◽  
Tinghuan Yang ◽  
Xiaodong Ren ◽  
Lu Zhang ◽  
Kui Zhao ◽  
...  

Author(s):  
Thierry Pauporté ◽  
Daming zheng

Nowadays, overcoming the stability issue of perovskite solar cells (PSCs) while keeping high efficiency has become an urgent need for the future of this technology. By using x-ray diffraction (XRD),...


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.


Solar RRL ◽  
2020 ◽  
pp. 2000606
Author(s):  
Muhammad. Abdel-Shakour ◽  
Towhid H. Chowdhury ◽  
Kiyoto Matsuishi ◽  
Idriss Bedja ◽  
Yutaka Moritomo ◽  
...  

Author(s):  
Paulo Ernesto Marchezi ◽  
Francineide Lopes de Araújo ◽  
Rodrigo Szostak ◽  
José Carlos Germino ◽  
Eralci M. Therézio ◽  
...  

Correction for ‘Reduced graphene oxide in perovskite solar cells: the influence on film formation, photophysics, performance, and stability’ by Paulo Ernesto Marchezi et al., J. Mater. Chem. C, 2021, DOI: 10.1039/D1TC01360B.


Author(s):  
N. Ashurov ◽  
B. L. Oksengendler ◽  
S. E. Maksimov ◽  
S. Rashiodva ◽  
A. R. Ishteev ◽  
...  

The fundamental problems of the modern state of the studies of organic-inorganic organo-halide perovskites (OHP) as basis for high efficiency thin film solar cells are discussed. Perovskite varieties and background properties are introduced. The chronology of development of the studies in this direction has been presented — structural aspects of these OHP perovskites, from early 2D to recent 3D MAPbI3 perovskites and important technological aspects of smooth thin film structure creation by various techniques, such as solvent engineering, spin- and dip-coating, vacuum deposition, cation exchange approach, nanoimprinting (particularly, a many-sided role of polymers). The most important theoretical problems such as electronic structure of lattice, impurity and defect states in pure and mixed perovskites, suppressed electron-hole recombination, extra-long lifetimes, and diffusion lengths are analyzed. Degradation effects associated with moisture and photo irradiation, as well as degradation of metallic electrodes to OHP solar cells have been considered. The application of carbon nanostructures: carbon nanotubes (CNT) and graphene as stable semitransparent charge collectors to OHP perovskites is demonstrated on the example of original results of authors.


2019 ◽  
Vol 29 (25) ◽  
pp. 1900092 ◽  
Author(s):  
Hanlin Hu ◽  
Zhiwei Ren ◽  
Patrick W. K. Fong ◽  
Minchao Qin ◽  
Danjun Liu ◽  
...  

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