Nanowires of Methylammonium Lead Iodide (CH3NH3PbI3) Prepared by Low Temperature Solution-Mediated Crystallization

Nano Letters ◽  
2014 ◽  
Vol 14 (12) ◽  
pp. 6761-6766 ◽  
Author(s):  
Endre Horváth ◽  
Massimo Spina ◽  
Zsolt Szekrényes ◽  
Katalin Kamarás ◽  
Richard Gaal ◽  
...  
Keyword(s):  
Low Temperature ◽  
Lead Iodide ◽  
Temperature Solution ◽  
Methylammonium Lead Iodide

scholarly journals MAPbI3 Microrods-Based Photo Resistor Switches: Fabrication and Electrical Characterization

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4385
Author(s):  
Ehsan Raza ◽  
Fakhra Aziz ◽  
Arti Mishra ◽  
Noora Jabor Al-Thani ◽  
Zubair Ahmad
Keyword(s):  
Carrier Transport ◽  
Solution Process ◽  
Electrical Characterization ◽  
Lead Iodide ◽  
Voltage Range ◽  
Conduction Mechanisms ◽  
Voltage Dependent ◽  
Conduction Behavior ◽  
Temperature Solution ◽  
Methylammonium Lead Iodide

The current work proposed the application of methylammonium lead iodide (MAPbI3) perovskite microrods toward photo resistor switches. A metal-semiconductor-metal (MSM) configuration with a structure of silver-MAPbI3(rods)-silver (Ag/MAPbI3/Ag) based photo-resistor was fabricated. The MAPbI3 microrods were prepared by adopting a facile low-temperature solution process, and then an independent MAPbI3 microrod was employed to the two-terminal device. The morphological and elemental compositional studies of the fabricated MAPbI3 microrods were performed using FESEM and EDS, respectively. The voltage-dependent electrical behavior and electronic conduction mechanisms of the fabricated photo-resistors were studied using current–voltage (I–V) characteristics. Different conduction mechanisms were observed at different voltage ranges in dark and under illumination. In dark conditions, the conduction behavior was dominated by typical trap-controlled charge transport mechanisms within the investigated voltage range. However, under illumination, the carrier transport is dominated by the current photogenerated mechanism. This study could extend the promising application of perovskite microrods in photo-induced resistor switches and beyond.

scholarly journals Unexpected Cation Dynamics in the Low-Temperature Phase of Methylammonium Lead Iodide: The Need for Improved Models

2016 ◽  
Vol 7 (22) ◽  
pp. 4701-4709 ◽  
Author(s):  
Kacper Drużbicki ◽  
Roberto Simone Pinna ◽  
Svemir Rudić ◽  
Marek Jura ◽  
Giuseppe Gorini ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Phase ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide ◽  
Low Temperature Phase

scholarly journals A combined molecular dynamics and experimental study of two-step process enabling low-temperature formation of phase-pure α-FAPbI3

2021 ◽  
Vol 7 (17) ◽  
pp. eabe3326
Author(s):  
Paramvir Ahlawat ◽  
Alexander Hinderhofer ◽  
Essa A. Alharbi ◽  
Haizhou Lu ◽  
Amita Ummadisingu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Solid Phase ◽  
Perovskite Solar Cells ◽  
X Ray Diffraction ◽  
Lead Iodide ◽  
Sequential Deposition ◽  
Phase Pure ◽  
Low Temperature Crystallization ◽  
Methylammonium Lead Iodide ◽  
Temperature Crystallization

It is well established that the lack of understanding the crystallization process in a two-step sequential deposition has a direct impact on efficiency, stability, and reproducibility of perovskite solar cells. Here, we try to understand the solid-solid phase transition occurring during the two-step sequential deposition of methylammonium lead iodide and formamidinium lead iodide. Using metadynamics, x-ray diffraction, and Raman spectroscopy, we reveal the microscopic details of this process. We find that the formation of perovskite proceeds through intermediate structures and report polymorphs found for methylammonium lead iodide and formamidinium lead iodide. From simulations, we discover a possible crystallization pathway for the highly efficient metastable α phase of formamidinium lead iodide. Guided by these simulations, we perform experiments that result in the low-temperature crystallization of phase-pure α-formamidinium lead iodide.

scholarly journals Large-area and efficient perovskite light-emitting diodes via low-temperature blade-coating

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shenglong Chu ◽  
Wenjing Chen ◽  
Zhibin Fang ◽  
Xun Xiao ◽  
Yan Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Light Emitting Diodes ◽  
Low Cost ◽  
Sol Gel ◽  
Large Area ◽  
Lead Iodide ◽  
Light Emitting ◽  
Production Techniques ◽  
Methylammonium Lead Iodide ◽  
Blade Coating

AbstractLarge-area light-emitting diodes (LEDs) fabricated by mass-production techniques are needed for low-cost flat-panel lighting. Nevertheless, it is still challenging to fabricate efficient large-area LEDs using organic small molecules (OLEDs), quantum dots (QLEDs), polymers (PLEDs), and recently-developed hybrid perovskites (PeLEDs) due to difficulties controlling film uniformity. To that end, we report sol-gel engineering of low-temperature blade-coated methylammonium lead iodide (MAPbI3) perovskite films. The precipitation, gelation, aging, and phase transformation stages are dramatically shortened by using a diluted, organoammonium-excessed precursor, resulting in ultra-flat large-area films (54 cm2) with roughness reaching 1 nm. The external quantum efficiency of doctor-bladed PeLEDs reaches 16.1%, higher than that of best-performing blade-coated OLEDs, QLEDs, and PLEDs. Furthermore, benefitting from the throughput of the blade-coating process and cheap materials, the expected cost of the emissive layer is projected to be as low as 0.02 cents per cm2, emphasizing its application potential.

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

The impact of metal ions doping on the defect chemistry of methylammonium lead iodide

2018 ◽  
Author(s):  
Nga Phung ◽  
Antonio Abate ◽  
Daniele Meggiolaro ◽  
Filippo De Angelis ◽  
Roberto Felix Duarte ◽  
...  
Keyword(s):  
Metal Ions ◽  
Defect Chemistry ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide ◽  
The Impact

Guanidinium/Methylammonium Lead Iodide Perovskite: An Unexplored Avenue for Stable and 20% Efficient Solar Cells

2018 ◽  
Author(s):  
Gustavo de Miguel ◽  
Alexander Davis Jodlowski ◽  
Cristina Roldán-Carmona ◽  
Luis Camacho Delgado ◽  
Mohammad Khaja Nazeeruddin
Keyword(s):  
Solar Cells ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

scholarly journals Rapid Growth of TiO2 Nanoflowers via Low-Temperature Solution Process: Photovoltaic and Sensing Applications

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 566 ◽  
Author(s):  
M. Akhtar ◽  
Ahmad Umar ◽  
Swati Sood ◽  
InSung Jung ◽  
H. Hegazy ◽  
...  
Keyword(s):  
Low Temperature ◽  
Anatase Phase ◽  
Three Dimensional ◽  
Solution Process ◽  
Dye Sensitized Solar Cell ◽  
Sensor Applications ◽  
Dye Sensitized ◽  
Sensing Applications ◽  
Density Growth ◽  
Temperature Solution

This paper reports the rapid synthesis, characterization, and photovoltaic and sensing applications of TiO2 nanoflowers prepared by a facile low-temperature solution process. The morphological characterizations clearly reveal the high-density growth of a three-dimensional flower-shaped structure composed of small petal-like rods. The detailed properties confirmed that the synthesized nanoflowers exhibited high crystallinity with anatase phase and possessed an energy bandgap of 3.2 eV. The synthesized TiO2 nanoflowers were utilized as photo-anode and electron-mediating materials to fabricate dye-sensitized solar cell (DSSC) and liquid nitroaniline sensor applications. The fabricated DSSC demonstrated a moderate conversion efficiency of ~3.64% with a maximum incident photon to current efficiency (IPCE) of ~41% at 540 nm. The fabricated liquid nitroaniline sensor demonstrated a good sensitivity of ~268.9 μA mM−1 cm−2 with a low detection limit of 1.05 mM in a short response time of 10 s.

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