Study of perovskite solar cells based on mixed-organic-cation FAxMA1−xPbI3 absorption layer

2019 ◽  
Vol 21 (22) ◽  
pp. 11822-11828 ◽  
Author(s):  
Yufeng Yang ◽  
Jundong Luo ◽  
Aixiang Wei ◽  
Jun Liu ◽  
Yu Zhao ◽  
...  

Mixed-organic-cation FAxMA1−xPbI3 films were prepared using a one-step solution deposition method in ambient air.

2019 ◽  
Vol 7 (39) ◽  
pp. 22420-22428 ◽  
Author(s):  
Dewei Huang ◽  
Pengfei Xie ◽  
Zhenxiao Pan ◽  
Huashang Rao ◽  
Xinhua Zhong

A novel strategy of adopting cesium acetate and methylammonium acetate increases the concentration of CsPbBr3 precursor solution assisting one-step deposition.


2015 ◽  
Vol 3 (45) ◽  
pp. 22839-22845 ◽  
Author(s):  
Na Lin ◽  
Juan Qiao ◽  
Haopeng Dong ◽  
Fusheng Ma ◽  
Liduo Wang

Morphology-controlled perovskite films were realized byn-hexane to promote crystallization of CH3NH3PbI3, thus improving their thermal stability and performance of the perovskite solar cells.


Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1521
Author(s):  
Jiabin Hao ◽  
Zeming Wang ◽  
Huiying Hao ◽  
Guanlei Wang ◽  
Hongcheng Gao ◽  
...  

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.


2017 ◽  
Vol 5 (26) ◽  
pp. 13439-13447 ◽  
Author(s):  
Jiaxing Song ◽  
Leijing Liu ◽  
Xiao-Feng Wang ◽  
Gang Chen ◽  
Wenjing Tian ◽  
...  

Although ZnO is a compatible electron transport layer (ETL) for perovskite solar cells (PSCs), the fact that MAPbI3 easily undergoes thermal decomposition on a low-temperature processed ZnO surface limits the use of one-step deposition of perovskite and hence the resulting photovoltaic performance. The triple cation perovskite prepared with a one-step deposition method is demonstrated to be a stable light absorber in highly efficient PSCs with low-temperature processed ZnO as the ETL.


NANO ◽  
2018 ◽  
Vol 13 (09) ◽  
pp. 1850102
Author(s):  
Xiude Yang ◽  
Debei Liu ◽  
Ping Li ◽  
Bo Wu ◽  
Haishen Huang ◽  
...  

By adopting N, N-Dimethylformamide (DMF) atmosphere annealing at room temperature, planar perovskite solar cells with a p-i-n structure of ITO/PEDOT:PSS/Perovskite/PCBM/C[Formula: see text]/Al are fabricated by a simple one-step solution process in ambient air with humidity around 50%, and the influence of DMF atmosphere on perovskite solar cells (PSCs) is systematically investigated. Compared to the reference device without DMF reaction, the perovskite films treated by modest DMF annealing show a better distribution and a higher densification, and thus the power conversion efficiency (PCE), short circuit current density ([Formula: see text] and fill factor (FF) are increased by about 17%, 8% and 6%, respectively. This work displays the importance of solvent annealing for perovskite film prepared by the one-step spin-coating method, and possibly provides a simple and cost-effective way to efficiently fabricate PSCs in ambient air.


2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Xi Zhang ◽  
Wenyao Yang ◽  
Jingjing Qi ◽  
Yinggang Hu

Abstract Although the power conversion efficiency (PCE) of perovskite solar cells (PSCs) increases rapidly, there are still some issues that limit their commercialization. The perovskite is sensitive to the water molecules, increasing the difficulty in the preparation of perovskite films in ambient condition. Most high-performance PSCs based on conventional method are required to be prepared in inert atmosphere condition, which increase the fabrication cost. To fabricate the high-quality perovskite in ambient condition, we preheated the substrates and selected the proper anti-solvent. As a result, the target perovskite films show a better crystallinity compared with perovskite film prepared via the conventional one-step deposition method in ambient condition. The PSCs prepared in ambient condition yield the improved PCE of 16.89% from a PCE of 11.59%. Compared with the reference devices, the performance stability of target PSCs is much better than that of reference PSCs.


Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1489
Author(s):  
Bhaskar Parida ◽  
Saemon Yoon ◽  
Dong-Won Kang

Materials and processing of transparent electrodes (TEs) are key factors to creating high-performance translucent perovskite solar cells. To date, sputtered indium tin oxide (ITO) has been a general option for a rear TE of translucent solar cells. However, it requires a rather high cost due to vacuum process and also typically causes plasma damage to the underlying layer. Therefore, we introduced TE based on ITO nanoparticles (ITO-NPs) by solution processing in ambient air without any heat treatment. As it reveals insufficient conductivity, Ag nanowires (Ag-NWs) are additionally coated. The ITO-NPs/Ag-NW (0D/1D) bilayer TE exhibits a better figure of merit than sputtered ITO. After constructing CsPbBr3 perovskite solar cells, the device with 0D/1D TE offers similar average visible transmission with the cells with sputtered ITO. More interestingly, the power conversion efficiency of 0D/1D TE device was 5.64%, which outperforms the cell (4.14%) made with sputtered-ITO. These impressive findings could open up a new pathway for the development of low-cost, translucent solar cells with quick processing under ambient air at room temperature.


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