Effects of cation size and concentration of cationic chlorides on the properties of formamidinium lead iodide based perovskite solar cells

2020 ◽  
Vol 4 (7) ◽  
pp. 3753-3763
Author(s):  
Minjin Kim ◽  
Tae Kyung Lee ◽  
In Woo Choi ◽  
Hye Won Choi ◽  
Yimhyun Jo ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
High Quality ◽  
Cation Size

The effect of cationic chlorides has been studied to achieve high quality perovskite films, for high performance perovskite solar cells.

scholarly journals Ambient Air Temperature Assisted Crystallization for Inorganic CsPbI2Br Perovskite Solar Cells

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3398
Author(s):  
Yi Long ◽  
Kun Liu ◽  
Yongli Zhang ◽  
Wenzhe Li
Keyword(s):  
Solar Cells ◽  
Air Temperature ◽  
High Performance ◽  
Defect Density ◽  
Perovskite Solar Cells ◽  
Ambient Air ◽  
Dark Phase ◽  
High Quality ◽  
Ambient Air Temperature ◽  
Air Atmosphere

Inorganic cesium lead halide perovskites, as alternative light absorbers for organic–inorganic hybrid perovskite solar cells, have attracted more and more attention due to their superb thermal stability for photovoltaic applications. However, the humid air instability of CsPbI2Br perovskite solar cells (PSCs) hinders their further development. The optoelectronic properties of CsPbI2Br films are closely related to the quality of films, so preparing high-quality perovskite films is crucial for fabricating high-performance PSCs. For the first time, we demonstrate that the regulation of ambient temperature of the dry air in the glovebox is able to control the growth of CsPbI2Br crystals and further optimize the morphology of CsPbI2Br film. Through controlling the ambient air temperature assisted crystallization, high-quality CsPbI2Br films are obtained, with advantages such as larger crystalline grains, negligible crystal boundaries, absence of pinholes, lower defect density, and faster carrier mobility. Accordingly, the PSCs based on as-prepared CsPbI2Br film achieve a power conversion efficiency of 15.5% (the maximum stabilized power output of 15.02%). Moreover, the optimized CsPbI2Br films show excellent robustness against moisture and oxygen and maintain the photovoltaic dark phase after 3 h aging in an air atmosphere at room temperature and 35% relative humidity (R.H.). In comparison, the pristine films are completely converted to the yellow phase in 1.5 h.

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.

Suppressing intrinsic self-doping of CsPbIBr2 films for high-performance all-inorganic, carbon-based perovskite solar cells

2020 ◽  
Vol 4 (9) ◽  
pp. 4506-4515
Author(s):  
Zeyang Zhang ◽  
Fengqin He ◽  
Weidong Zhu ◽  
Dandan Chen ◽  
Wenming Chai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Doping Level ◽  
High Performance ◽  
Inorganic Carbon ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Carbon Based

High-quality CsPbIBr2 films with a much lower self-doping level are obtained by the use of a CsI-rich precursor, which enables the fabrication of an all-inorganic, carbon-based solar cell with a superior efficiency of 10.48%.

Synergistic effects of thiocyanate additive and cesium cations on improving the performance and initial illumination stability of efficient perovskite solar cells

2018 ◽  
Vol 2 (11) ◽  
pp. 2435-2441 ◽  
Author(s):  
Changlei Wang ◽  
Zhaoning Song ◽  
Yue Yu ◽  
Dewei Zhao ◽  
Rasha A. Awni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Output ◽  
High Performance ◽  
Synergistic Effects ◽  
Perovskite Solar Cells ◽  
High Quality

The combination of Pb(SCN)2 and CsPbI3 results in high quality perovskite films, leading to high performance PVSCs with a stable power output.

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.

A review: crystal growth for high-performance all-inorganic perovskite solar cells

2020 ◽  
Vol 13 (7) ◽  
pp. 1971-1996 ◽  
Author(s):  
Weijie Chen ◽  
Xinqi Li ◽  
Yaowen Li ◽  
Yongfang Li
Keyword(s):  
Solar Cells ◽  
Crystal Growth ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Key Factors ◽  
High Quality ◽  
Inorganic Perovskite ◽  
Perovskite Crystal

The key factors for high-quality all-inorganic perovskite crystal growth.

scholarly journals Perovskite solar cells prepared by flash evaporation

2015 ◽  
Vol 51 (34) ◽  
pp. 7376-7378 ◽  
Author(s):  
Giulia Longo ◽  
Lidón Gil-Escrig ◽  
Maarten J. Degen ◽  
Michele Sessolo ◽  
Henk J. Bolink
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Deposition Method ◽  
Vacuum Deposition ◽  
Flash Evaporation ◽  
Lead Iodide ◽  
High Quality ◽  
Methylammonium Lead Iodide ◽  
Vacuum Deposition Method

A simple vacuum deposition method for the preparation of high quality hybrid organic–inorganic methylammonium lead iodide perovskite thin films is reported.

Pyridine solvent engineering for high quality anion-cation-mixed hybrid and high performance of perovskite solar cells

2018 ◽  
Vol 399 ◽  
pp. 144-150 ◽  
Author(s):  
Xuping Liu ◽  
Jihuai Wu ◽  
Yuqian Yang ◽  
Tongyue Wu ◽  
Qiyao Guo
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Solvent Engineering

High performance low-dimensional perovskite solar cells based on a one dimensional lead iodide perovskite

2019 ◽  
Vol 7 (15) ◽  
pp. 8811-8817 ◽  
Author(s):  
Chunqing Ma ◽  
Dong Shen ◽  
Bin Huang ◽  
Xiaocui Li ◽  
Wen-Cheng Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
One Dimensional ◽  
Low Dimensional

One-dimensional perovskites enable high performance low-dimensional perovskite solar cells.

scholarly journals Ambient fabrication of perovskite solar cells through delay-deposition technique

2021 ◽  
Vol 10 (2) ◽  
Author(s):  
Puteri Nor Aznie Fahsyar ◽  
Norasikin Ahmad Ludin ◽  
Noor Fadhilah Ramli ◽  
Mohamad Firdaus Mohamad Noh ◽  
Rozan Mohamad Yunus ◽  
...  
Keyword(s):  
Solar Cells ◽  
Time Delay ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Deposition Technique ◽  
Lead Iodide ◽  
Step Method ◽  
High Quality

AbstractThe establishment of perovskite solar cells (PSCs) in terms of their power-conversion efficiency (PCE) over silicon-based solar cells is undeniable. The state-of-art of easy device fabrications of PSCs has enabled them to rapidly gain a place in third-generation photovoltaic technology. Numerous obstacles remain to be addressed in device efficiency and stability. Low performance owing to easily degraded surface and deterioration of perovskite film quality resulting from humidity are issues that often arise. This work explored a new approach to producing high-quality perovskite films prepared under high relative humidity (RH = 40%–50%). In particular, the ubiquitous 4-tert-butylpyridine (tBp) was introduced into lead iodide (PbI2) precursor as an additive, and the films were fabricated using a two-step deposition method followed by a delay-deposition technique of methylammonium iodide (MAI). High crystallinity and controlled nucleation of MAI were needed, and this approach revealed the significance of time control to ensure high-quality films with large grain size, high crystallography, wide coverage on substrate, and precise and evenly coupled MAI molecules to PbI2 films. Compared with the two-step method without time delay, a noticeable improvement in PCE from 3.2 to 8.3% was achieved for the sample prepared with 15 s time delay. This finding was primarily due to the significant enhancement in the open-circuit voltage, short-circuit current, and fill factor of the device. This strategy can effectively improve the morphology and crystallinity of perovskite films, as well as reduce the recombination of photogenerated carriers and increase of current density of devices, thereby achieving improved photovoltaic performance.

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