A mixed solvent for rapid fabrication of large-area methylammonium lead iodide layers by one-step coating at room temperature

2019 ◽  
Vol 7 (31) ◽  
pp. 18275-18284 ◽  
Author(s):  
Qiuju Liu ◽  
Yanan Zhao ◽  
Yinxing Ma ◽  
Xuan Sun ◽  
Wenqi Ge ◽  
...  
Keyword(s):  
Spin Coating ◽  
Room Temperature ◽  
Mixed Solvent ◽  
Large Area ◽  
Lead Iodide ◽  
High Quality ◽  
Rapid Fabrication ◽  
One Step ◽  
Methylammonium Lead Iodide ◽  
Blade Coating

A new mixed solvent enables rapid fabrication of high-quality perovskite films directly by one-step spin-coating or blade-coating.

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.

scholarly journals Direct Observation of Dynamic Symmetry Breaking above Room Temperature in Methylammonium Lead Iodide Perovskite

2016 ◽  
Vol 1 (4) ◽  
pp. 880-887 ◽  
Author(s):  
Alexander N. Beecher ◽  
Octavi E. Semonin ◽  
Jonathan M. Skelton ◽  
Jarvist M. Frost ◽  
Maxwell W. Terban ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Direct Observation ◽  
Room Temperature ◽  
Dynamic Symmetry ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

Highly efficient CsPbIBr2 perovskite solar cells with efficiency over 9.8% fabricated using a preheating-assisted spin-coating method

2019 ◽  
Vol 7 (32) ◽  
pp. 19008-19016 ◽  
Author(s):  
Yuxiao Guo ◽  
Xingtian Yin ◽  
Jie Liu ◽  
Wenxiu Que
Keyword(s):  
Solar Cells ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Spin Coating Method ◽  
Highly Efficient ◽  
Coating Method ◽  
One Step

An efficient and facile one-step spin-coating method assisted by a preheating process was applied for the fabrication of high-quality CsPbIBr2 films.

scholarly journals Rapid synthesis of hybrid methylammonium lead iodide perovskite quantum dots and rich MnI2 substitution favouring Pb-free warm white LED applications

2019 ◽  
Vol 1 (8) ◽  
pp. 2999-3008 ◽  
Author(s):  
Rajan Kumar Singh ◽  
Sudipta Som ◽  
Somrita Dutta ◽  
Neha Jain ◽  
Mei-Tsun Kuo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Environmental Pollution ◽  
Room Temperature ◽  
White Led ◽  
Lead Iodide ◽  
Rapid Synthesis ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Perovskite Quantum Dots ◽  
Methylammonium Lead Iodide

We present a facile room temperature synthesis of CH3NH3Pb1−xMnxI3 perovskite quantum dots (PQDs) substituting manganese (Mn2+) at the lead (Pb2+) sites to minimize environmental pollution and make it commercially feasible.

scholarly journals Out-of-equilibrium processes in crystallization of organic-inorganic perovskites during spin coating

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Shambhavi Pratap ◽  
Finn Babbe ◽  
Nicola S. Barchi ◽  
Zhenghao Yuan ◽  
Tina Luong ◽  
...  
Keyword(s):  
Spin Coating ◽  
Grazing Incidence ◽  
Lead Iodide ◽  
In Situ Data ◽  
X Ray Scattering ◽  
Equilibrium Processes ◽  
Complex Phenomena ◽  
Methylammonium Lead Iodide ◽  
Solvent Complex

AbstractComplex phenomena are prevalent during the formation of materials, which affect their processing-structure-function relationships. Thin films of methylammonium lead iodide (CH3NH3PbI3, MAPI) are processed by spin coating, antisolvent drop, and annealing of colloidal precursors. The structure and properties of transient and stable phases formed during the process are reported, and the mechanistic insights of the underlying transitions are revealed by combining in situ data from grazing-incidence wide-angle X-ray scattering and photoluminescence spectroscopy. Here, we report the detailed insights on the embryonic stages of organic-inorganic perovskite formation. The physicochemical evolution during the conversion proceeds in four steps: i) An instant nucleation of polydisperse MAPI nanocrystals on antisolvent drop, ii) the instantaneous partial conversion of metastable nanocrystals into orthorhombic solvent-complex by cluster coalescence, iii) the thermal decomposition (dissolution) of the stable solvent-complex into plumboiodide fragments upon evaporation of solvent from the complex and iv) the formation (recrystallization) of cubic MAPI crystals in thin film.

scholarly journals Defect induced room temperature ferromagnetism in methylammonium lead iodide perovskite

2020 ◽  
Vol 384 (14) ◽  
pp. 126278 ◽  
Author(s):  
Sayantan Sil ◽  
Homnath Luitel ◽  
Joydeep Dhar ◽  
Mahuya Chakrabarti ◽  
Partha Pratim Ray ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

scholarly journals Microfluidic Approach for Lead Halide Perovskite Flexible Phototransistors

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1852
Author(s):  
Fatemeh Khorramshahi ◽  
Arash Takshi
Keyword(s):  
Room Temperature ◽  
Lead Iodide ◽  
Current Modulation ◽  
Facile Fabrication ◽  
Halide Perovskites ◽  
P Type ◽  
Methylammonium Lead Iodide ◽  
Source Structure ◽  
Polycrystalline Form ◽  
Lead Halide

Lead halide perovskites possess outstanding optical characteristics that can be employed in the fabrication of phototransistors. However, due to low current modulation at room temperature, sensitivity to the ambient environment, lack of patterning techniques and low carrier mobility of polycrystalline form, investigation in perovskite phototransistors has been limited to rigid substrates such as silicon and glass to improve the film quality. Here, we report on room temperature current modulation in a methylammonium lead iodide perovskite (MAPbI3) flexible transistor made by an extremely cheap and facile fabrication process. The proposed phototransistor has the top-gate configuration with a lateral drain–channel–source structure. The device performed in the linear and saturation regions both in the dark and under white light in different current ranges according to the illumination conditions. The transistor showed p-type transport characteristics and the field effect mobility of the device was calculated to be ~1.7 cm2 V−1 s−1. This study is expected to contribute to the development of MAPbI3 flexible phototransistors.

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.

Sign in / Sign up

Export Citation Format

Share Document