Lead Iodide Thin Film Crystallization Control for High-Performance and Stable Solution-Processed Perovskite Solar Cells

2015 ◽  
Vol 7 (27) ◽  
pp. 14614-14619 ◽  
Author(s):  
Lijun Yang ◽  
Jingchuan Wang ◽  
Wallace Woon-Fong Leung
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Stable Solution ◽  
Lead Iodide ◽  
Solution Processed

Design of surface termination for high-performance perovskite solar cells

2021 ◽  
Author(s):  
Yan Yang ◽  
Wangen Zhao ◽  
Tengteng Yang ◽  
Jiali Liu ◽  
Jingru Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Surface Termination ◽  
Guanidinium Thiocyanate

Guanidinium thiocyanate was selected to modify the surface terminations of methylamine lead iodide (MAPbI3) perovskite films and a 21.26% PCE was acquired for a solar cell based on the MAPbI3 system, and the voltage deficit is reduced to 0.426 V.

scholarly journals Integrated molecular, morphological and interfacial engineering towards highly efficient and stable solution-processed small molecule solar cells

2015 ◽  
Vol 3 (45) ◽  
pp. 22695-22707 ◽  
Author(s):  
Jie Min ◽  
Yuriy N. Luponosov ◽  
Nicola Gasparini ◽  
Lingwei Xue ◽  
Fedor V. Drozdov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Stable Solution ◽  
Solution Processed ◽  
Interfacial Engineering ◽  
Highly Efficient

High-performance small molecule OSCs with PCEs up to 6.4% are demonstrated.

Enhanced Grain Size and Crystallinity in CH3NH3PbI3 Perovskite Films by Metal Additives to the Single-Step Solution Fabrication Process

MRS Advances ◽  
2018 ◽  
Vol 3 (55) ◽  
pp. 3237-3242 ◽  
Author(s):  
Zahrah S. Almutawah ◽  
Suneth C. Watthage ◽  
Zhaoning Song ◽  
Ramez H. Ahangharnejhad ◽  
Kamala K. Subedi ◽  
...  
Keyword(s):  
Grain Size ◽  
Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Single Step ◽  
Fabrication Process ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

ABSTRACTMethods of obtaining large grain size and high crystallinity in absorber materials play an important role in fabrication of high-performance methylammonium lead iodide (MAPbI3) perovskite solar cells. Here we study the effect of adding small concentrations of Cd2+, Zn2+, and Fe2+salts to the perovskite precursor solution used in the single-step solution fabrication process. Enhanced grain size and crystallinity in MAPbI3 films were obtained by using 0.1% of Cd2+ or Zn2+in the precursor solution. Consequently, solar cells constructed with Cd- and Zn-doped perovskite films show a significant improvement in device performance. These results suggest that the process may be an effective and facile method to fabricate high-efficiency perovskite photovoltaic devices.

Solution-Processed Polymeric Thin Film as the Transparent Electrode for Flexible Perovskite Solar Cells

2020 ◽  
Vol 12 (13) ◽  
pp. 15456-15463 ◽  
Author(s):  
Tao Zhu ◽  
Yongrui Yang ◽  
Xiang Yao ◽  
Zixu Huang ◽  
Lei Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Transparent Electrode ◽  
Solution Processed ◽  
Polymeric Thin Film

One plus one greater than two: high-performance inverted planar perovskite solar cells based on a composite CuI/CuSCN hole-transporting layer

2018 ◽  
Vol 6 (43) ◽  
pp. 21435-21444 ◽  
Author(s):  
Haoxin Wang ◽  
Ze Yu ◽  
Jianbo Lai ◽  
Xinkai Song ◽  
Xichuan Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Solution Processed ◽  
Hole Transporting ◽  
Temperature Solution

Low-temperature solution-processed CuI/CuSCN composites have been successfully demonstrated to be effective hole-transporting layers for inverted planar perovskite solar cells.

scholarly journals Direct Observation of Long Electron-Hole Diffusion Distance in CH3NH3PbI3 Perovskite Thin Film

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Yu Li ◽  
Weibo Yan ◽  
Yunlong Li ◽  
Shufeng Wang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Diffusion Distance ◽  
Transfer Layer ◽  
Electron Hole ◽  
Direct Support ◽  
Short Diffusion Distance

Abstract In high performance perovskite based solar cells, CH3NH3PbI3 is the key material. We carried out a study on charge diffusion in spin-coated CH3NH3PbI3 perovskite thin film by transient fluorescent spectroscopy. A thickness-dependent fluorescent lifetime was found. By coating the film with an electron or hole transfer layer, [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) or 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD) respectively, we observed the charge transfer directly through the fluorescence quenching. One-dimensional diffusion model was applied to obtain long charge diffusion distances in thick films, which is ~1.7 μm for electrons and up to ~6.3 μm for holes. Short diffusion distance of few hundreds of nanometer was also observed in thin film. This thickness dependent charge diffusion explained the formerly reported short charge diffusion distance (~100 nm) in films and resolved its confliction to thick working layer (300–500 nm) in real devices. This study presents direct support to the high performance perovskite solar cells and will benefit the devices’ design.

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