CoCl2 as film morphology controller for efficient planar CsPbIBr2 perovskite solar cells

2020 ◽  
Vol 349 ◽  
pp. 136162
Author(s):  
Hongrui Sun ◽  
Luting Yu ◽  
Haobo Yuan ◽  
Jing Zhang ◽  
Xinlei Gan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Film Morphology

scholarly journals Effect of Annealing Process on CH3NH3PbI3-XClX Film Morphology of Planar Heterojunction Perovskite Solar Cells with Optimal Compact TiO2 Layer

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Dan Chen ◽  
Xiaoping Zou ◽  
Hong Yang ◽  
Ningning Zhang ◽  
Wenbin Jin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Annealing Temperature ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Annealing Process ◽  
Film Morphology ◽  
Perovskite Layer ◽  
Optimal Procedures ◽  
Planar Heterojunction ◽  
Annealing Method

The morphology of compact TiO2 film used as an electron-selective layer and perovskite film used as a light absorption layer in planar perovskite solar cells has a significant influence on the photovoltaic performance of the devices. In this paper, the spin coating speed of the compact TiO2 is investigated in order to get a high-quality film and the compact TiO2 film exhibits pinhole- and crack-free films treated by 2000 rpm for 60 s. Furthermore, the effect of annealing process, including annealing temperature and annealing program, on CH3NH3PbI3-XClX film morphology is studied. At the optimal annealing temperature of 100°C, the CH3NH3PbI3-XClX morphology fabricated by multistep slow annealing method has smaller grain boundaries and holes than that prepared by one-step direct annealing method, which results in the reduction of grain boundary recombination and the increase of Voc. With all optimal procedures, a planar fluorine-doped tin oxide (FTO) substrate/compact TiO2/CH3NH3PbI3-XClX/Spiro-MeOTAD/Au cell is prepared for an active area of 0.1 cm2. It has achieved a power conversion efficiency (PCE) of 14.64%, which is 80.3% higher than the reference cell (8.12% PCE) without optimal perovskite layer. We anticipate that the annealing process with optimal compact TiO2 layer would possibly become a promising method for future industrialization of planar perovskite solar cells.

scholarly journals Processing and Preparation Method for High-Quality Opto-Electronic Perovskite Film

2021 ◽  
Vol 8 ◽  
Author(s):  
Zheng Chen ◽  
Ping He ◽  
Dan Wu ◽  
Chen Chen ◽  
Muhammad Mujahid ◽  
...  
Keyword(s):  
Solar Cells ◽  
Vapor Deposition ◽  
Large Scale ◽  
High Efficiency ◽  
Preparation Method ◽  
Perovskite Solar Cells ◽  
Scale Production ◽  
Film Morphology ◽  
Technical Requirements ◽  
Coating Method

The key to improving the energy conversion efficiency of perovskite solar cells lies in the optimization of the film morphology. The optical and electrical properties of the perovskite film, such as light absorption, carrier diffusion length, and charge transport, are all directly affected by the film morphology. Therefore, this review starts from the perovskite solar cells structure, and it summarizes the state-of-art perovskite film fabrication technologies and the caused film morphology to the performance perovskite solar cells. The spin coating method has an enormous waste of materials and only a small area of the device can be utilized. It is difficult to be used in commercial manufacturing. However, due to the high efficiency of this preparation method, it is irreplaceable in the initial research and development of perovskite materials, and so this method will be popular for a long time in the laboratory. Chemical vapor deposition and thermal vapor deposition have high technical requirements and a good repeatability of processing and manufacturing, and large-scale production can be realized. It may be the first technology to admit industrial application; the scratch coating method and slot-die have significant technical aspects. The similarity of the roll-to-roll manufacturing technology is also an efficient preparation method. Still, to achieve high-efficiency devices, it is necessary to consider the thickness control of each functional layer, and to find or prepare perovskite paste. Finally, we summarized the various fabrication processes and the prospects for the commercialization of perovskite solar cells. We predict that to achieve the commercialization of perovskite solar cells, the existing fabrication technologies should be optimized and more studies should be conducted.

High performance low-bandgap perovskite solar cells based on a high-quality mixed Sn–Pb perovskite film prepared by vacuum-assisted thermal annealing

2018 ◽  
Vol 6 (34) ◽  
pp. 16347-16354 ◽  
Author(s):  
Meiyue Liu ◽  
Ziming Chen ◽  
Qifan Xue ◽  
Sin Hang Cheung ◽  
Shu Kong So ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Thermal Annealing ◽  
High Performance ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Film Morphology ◽  
High Quality ◽  
Low Bandgap

Vacuum-assisted thermal annealing not only could improve film morphology and crystallinity, but also could accelerate the sublimation of undesired MACl. With the help of this process, we obtain a highly efficient low-bandgap CH3NH3Sn0.5Pb0.5IxCl3−x perovskite solar cell with a power conversion efficiency of 12.3%.

High performance fiber-shaped perovskite solar cells based on lead acetate precursor

2018 ◽  
Vol 2 (1) ◽  
pp. 79-84 ◽  
Author(s):  
Hsienwei Hu ◽  
Bin Dong ◽  
Buxin Chen ◽  
Xue Gao ◽  
Dechun Zou
Keyword(s):  
Solar Cells ◽  
Lead Acetate ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Curved Surfaces ◽  
Film Morphology ◽  
High Performance Fiber ◽  
Lead Source ◽  
First Time ◽  
Time Lead

For the first time, lead acetate was introduced as the lead source to improve the perovskite film morphology on highly curved surfaces. The resulting fiber-shaped perovskite solar cells achieved a PCE of 7.53%.

Highly reproducible perovskite solar cells with excellent CH3NH3PbI3−xClx film morphology fabricated via high precursor concentration

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51279-51285 ◽  
Author(s):  
Dong Liu ◽  
Cai Liu ◽  
Lili Wu ◽  
Wei Li ◽  
Fang Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Precursor Concentration ◽  
Film Morphology ◽  
Effective Strategy ◽  
High Concentration ◽  
Spinning Process ◽  
Novel Method

A novel method was proposed to achieve excellent CH3NH3PbI3−xClx films based on a high concentration spinning process, which offered an effective strategy for highly reproducible perovskite solar cells with excellent morphology.

Large fill-factor bilayer iodine perovskite solar cells fabricated by a low-temperature solution-process

2014 ◽  
Vol 7 (7) ◽  
pp. 2359-2365 ◽  
Author(s):  
Qi Wang ◽  
Yuchuan Shao ◽  
Qingfeng Dong ◽  
Zhengguo Xiao ◽  
Yongbo Yuan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
Solution Process ◽  
Device Performance ◽  
Film Morphology ◽  
Temperature Solution ◽  
Precursor Ratio

This work studied the influence of the methylammonium iodide/lead iodine precursor ratio on the perovskite film morphology and device performance.

Improved film morphology of (CH3NH3)3Bi2I9 via cation displacement approach for lead-free perovskite solar cells

2019 ◽  
Vol 54 (14) ◽  
pp. 10371-10378 ◽  
Author(s):  
Fengzhu Li ◽  
Haochen Fan ◽  
Pengcheng Wang ◽  
Xiangjun Li ◽  
Yanlin Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Free ◽  
Film Morphology ◽  
Displacement Approach
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