Stabilizing Formamidinium Lead Iodide Perovskite Precursor Solution with Phenylboric Acid

Solar RRL ◽  
2021 ◽  
pp. 2000715
Author(s):  
Chen Chen ◽  
Yi Rao ◽  
Zhipeng Li ◽  
Xiao Wang ◽  
Guanglei Cui ◽  
...  
Keyword(s):  
Precursor Solution ◽  
Lead Iodide ◽  
Phenylboric Acid

CsPbI2.69Br0.31 solar cells from low-temperature fabrication

2019 ◽  
Vol 3 (6) ◽  
pp. 1139-1142 ◽  
Author(s):  
Shizhe Wang ◽  
Yong Hua ◽  
Mingkui Wang ◽  
Fangyang Liu ◽  
Liming Ding
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Hydrobromic Acid ◽  
Annealing Temperature ◽  
Precursor Solution ◽  
Cubic Phase ◽  
Lead Iodide

By adding hydrobromic acid (HBr) into the precursor solution, a cubic-phase cesium lead iodide perovskite film was made at a low annealing temperature of 60 °C.

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.

Ethanol-Incorporated Lead Iodide Precursor Solution for Improving Triple-Cation Perovskite Performance

2021 ◽  
pp. 130758
Author(s):  
Ban K. Mohammed ◽  
Mustafa K. A. Mohammed ◽  
Duha S. Ahmed
Keyword(s):  
Precursor Solution ◽  
Lead Iodide

Enhancement of Perovskite Solar-Cell Efficiency Using FAPbBr3/I3 with Methylammonium Chloride

2021 ◽  
Vol 16 (6) ◽  
pp. 879-883
Author(s):  
Sung Hwan Joo ◽  
Chung Wung Bark ◽  
Hyung Wook Choi
Keyword(s):  
Solar Cell ◽  
Precursor Solution ◽  
Perovskite Solar Cell ◽  
Hexagonal Structure ◽  
Lead Iodide ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Α Phase ◽  
Methylammonium Chloride ◽  
Δ Phase

Organic/inorganic metal halide formamidinium lead iodide (FAPbI3) perovskites exhibit excellent optical properties, a suitable band gap, a wide light-absorption range, and superior electron-hole mobility. However, it is difficult to fabricate high-quality α-phase FAPbI3 film due to the relatively easy formation of the more stable δ-FAPbI3 (hexagonal structure). To overcome this, in this study, formamidinium lead bromide (FAPbBr3) was used to induce the synthesis of stable α-phase FAPbI3. The resulting light-absorbing layer was composed of (FAPbI3)0.95 (FAPbBr3)0.05, but δ-phase FAPbI3 could be still observed. To suppress the formation of δ-phase FAPbI3 , methylammonium chloride (MACl) was added to the (FAPbI3)0.95 (FAPbBr3)0.05 precursor solution. At an optimal MACl content of 40 mol%, perovskites with improved crystallinity and large crystallite size could be fabricated, resulting in a perovskite solar-cell efficiency of 18.204%.

Processing and characterization of YBa2Cu3O7−x/Ag composites

1990 ◽  
Vol 48 (4) ◽  
pp. 46-47
Author(s):  
Jafar Javadpour ◽  
Bradley L. Thiel ◽  
Sarikaya Mehmet ◽  
Ilhan A. Aksay
Keyword(s):  
Composite System ◽  
Precursor Solution ◽  
Microstructural Development ◽  
Superconducting Properties ◽  
Practical Applications ◽  
Nitrate Precursor ◽  
Cold Pressed ◽  
Tape Cast ◽  
Composite Samples

Practical applications of bulk YBa2Cu3O7−x materials have been limited because of their inadequate critical current density (jc) and poor mechanical properties. Several recent reports have indicated that the addition of Ag to the YBa2Cu3O7−x system is beneficial in improving both mechanical and superconducting properties. However, detailed studies concerning the effect of Ag on the microstructural development of the cermet system have been lacking. Here, we present some observations on the microstructural evolution in the YBa2Cu3O7−x/Ag composite system.The composite samples were prepared by mixing various amounts (2.5 - 50 wt%) AgNO3 in the YBa2Cu3O7−x nitrate precursor solution. These solutions were then spray dried and the resulting powders were either cold pressed or tape cast. The microstructures of the sintered samples were analyzed using SEM (Philips 515) and an analytical TEM (Philips 430T).The SEM micrographs of the compacts with 2.5 and 50 wt% Ag addition sintered at 915°C (below the melting point of Ag) for 1 h in air are displayed in Figs. 1 and 2, respectively.

Hollow Metal Halide Perovskite Nanocrystals with Efficient Blue Emissions

2019 ◽  
Author(s):  
Michael Worku ◽  
Yu Tian ◽  
Chenkun Zhou ◽  
Haoran Lin ◽  
Maya Chaaban ◽  
...  
Keyword(s):  
Precursor Solution ◽  
Visible Spectral Region ◽  
Metal Halide ◽  
Synthetic Control ◽  
Perovskite Nanocrystals ◽  
Highly Efficient ◽  
Quantum Confinement Effects ◽  
Metal Halide Perovskite ◽  
Lead Bromide ◽  
Halide Perovskite

Metal halide perovskite nanocrystals (NCs) have emerged as a new generation light emitting materials with narrow emissions and high photoluminescence quantum efficiencies (PLQEs). Various types of perovskite NCs, e.g. platelets, wires, and cubes, have been discovered to exhibit tunable emissions across the whole visible spectral region. Despite remarkable advances in the field of metal halide perovskite NCs over the last few years, many nanostructures in inorganic NCs have yet been realized in metal halide perovskites and producing highly efficient blue emitting perovskite NCs remains challenging and of great interest. Here we report for the first time the discovery of highly efficient blue emitting cesium lead bromide perovskite (CsPbBr3) NCs with hollow structures. By facile solution processing of cesium lead bromide perovskite precursor solution containing additional ethylenediammonium bromide and sodium bromide, in-situ formation of hollow CsPbBr3 NCs with controlled particle and pore sizes is realized. Synthetic control of hollow nanostructures with quantum confinement effects results in color tuning of CsPbBr3 NCs from green to blue with high PLQEs of up to 81 %.<br><div><br></div>

Properties of methylammonium lead iodide peerovskite single crystals

2017 ◽  
Vol 58 (8) ◽  
Author(s):  
E. S. Yudanova ◽  
◽  
T. A. Duda ◽  
O. E. Tereshchenko ◽  
O. I. Semenova ◽  
...  
Keyword(s):  
Single Crystals ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

Ferroelectric domains in methylammonium lead iodide perovskite solar cells

2018 ◽  
Author(s):  
Holger Röhm ◽  
Tobias Leonhard ◽  
Michael J. Hoffmann ◽  
Alexander Colsmann
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Ferroelectric Domains ◽  
Methylammonium Lead Iodide
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