Effect of the chemical composition on the structural, thermodynamical and mechanical properties of all-inorganic Halide Perovskites

2021 ◽  
Author(s):  
Pablo Sanchez-Palencia ◽  
Gregorio García ◽  
Perla Wahnon ◽  
Pablo Palacios
Keyword(s):  
Mechanical Properties ◽  
Solar Cells ◽  
Chemical Composition ◽  
Optoelectronic Devices ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Halide Perovskites

Organic-inorganic hybrid halide perovskites are widely used in optoelectronic devices such as solar cells and light emitting devices. Pursuing solutions to a key problem of instability in most used MAPbI3,...

scholarly journals Photostable and Uniform CH3NH3PbI3 Perovskite Film Prepared via Stoichiometric Modification and Solvent Engineering

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 405
Author(s):  
Daocheng Hong ◽  
Mingyi Xie ◽  
Yuxi Tian
Keyword(s):  
Solar Cells ◽  
Optoelectronic Devices ◽  
Solvent Engineering ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Coverage Ratio ◽  
Fabrication Procedure ◽  
Fabrication Condition ◽  
Halide Perovskites ◽  
Photoluminescence Efficiency

Solution-processed organometal halide perovskites (OMHPs) have been widely used in optoelectronic devices, and have exhibited brilliant performance. One of their generally recognized advantages is their easy fabrication procedure. However, such a procedure also brings uncertainty about the opto-electric properties of the final samples and devices, including morphology, stability, coverage ratio, and defect concentration. Normally, one needs to find a balanced condition, because there is a competitive relation between these parameters. In this work, we fabricated CH3NH3PbI3 films by carefully changing the ratio of the PbI2 to CH3NH3I, and found that the stoichiometric and solvent engineering not only determined the photoluminescence efficiency and defects in the materials, but also affected the photostability, morphology, and coverage ratio. Combining solvent engineering and the substitution of PbI2 by Pb(Ac)2, we obtained an optimized fabrication condition, providing uniform CH3NH3PbI3 films with both high photoluminescence efficiency and high photostability under either I-rich or Pb-rich conditions. These results provide an optimized fabrication procedure for CH3NH3PbI3 and other OMHP films, which is crucial for the performance of perovskite-based solar cells and light emitting devices.

Organic interfacial materials for perovskite-based optoelectronic devices

2019 ◽  
Vol 12 (4) ◽  
pp. 1177-1209 ◽  
Author(s):  
Hong Duc Pham ◽  
Li Xianqiang ◽  
Wenhui Li ◽  
Sergei Manzhos ◽  
Aung Ko Ko Kyaw ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Emitting Diodes ◽  
Optoelectronic Devices ◽  
Light Emitting ◽  
Development And Utilization ◽  
Halide Perovskites

We summarize the development and utilization of organic interfacial materials in solar cells, photodetectors and light-emitting diodes based on organic–inorganic halide perovskites.

Engineering Electrodes and Metal Halide Perovskite Materials for Flexible/Stretchable Perovskite Solar Cells and Light-Emitting Diodes

2021 ◽  
Author(s):  
Kyung-Geun Lim ◽  
Tae-Hee Han ◽  
Tae-Woo Lee
Keyword(s):  
Solar Cells ◽  
Electronic Devices ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Perovskite Materials ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite

Organic-inorganic hybrid metal halide perovskites have excellent optoelectronic properties and are soft and resilient; therefore, they are appropriate for use in flexible and stretchable electronic devices. Commercialization of these perovskite...

scholarly journals Control of spontaneous emission rate in lead halide perovskite film on hyperbolic metamaterial

2021 ◽  
Vol 2015 (1) ◽  
pp. 012153
Author(s):  
Pavel Tonkaev ◽  
Sergey Makarov
Keyword(s):  
Radiative Recombination ◽  
Emission Rate ◽  
Optoelectronic Devices ◽  
Spontaneous Emission Rate ◽  
Hyperbolic Metamaterials ◽  
Light Emitting ◽  
Hyperbolic Metamaterial ◽  
Light Emitting Devices ◽  
Halide Perovskites ◽  
Lead Halide

Abstract Hyperbolic metamaterials represent a class of nanophotonic architectures with the possibility of controlling density of optical states. Due to this property, hyperbolic metamaterials can be employed as meta-electrodes in optoelectronic devices. On the other hand, lead halide perovskites have several promising properties for application in light-emitting devices. Moreover, a perovskite film is easily deposited on a hyperbolic metamaterial surface. Here, we theoretically show how to accelerate radiative recombination in a perovskite film with a hyperbolic metamaterial. This effect can be applied in light-emitting devices, where radiative recombination is extremely important.

Identification of the physical origin behind disorder, heterogeneity, and reconstruction and their correlation with the photoluminescence lifetime in hybrid perovskite thin films

2017 ◽  
Vol 5 (39) ◽  
pp. 21002-21015 ◽  
Author(s):  
Taame Abraha Berhe ◽  
Ju-Hsiang Cheng ◽  
Wei-Nien Su ◽  
Chun-Jern Pan ◽  
Meng-Che Tsai ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Physical Origin ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Hybrid Perovskite ◽  
Absorbing Materials ◽  
Photoluminescence Lifetime ◽  
Halide Perovskites ◽  
Organolead Halide

Organolead halide perovskites are interesting light-absorbing materials for solar cells and light-emitting devices.

Efficient organic manganese (II) bromide green-light-emitting diodes enabled by manipulating hole and electron transport layer

2021 ◽  
Author(s):  
Hyunsik Im ◽  
Atanu Jana ◽  
Vijaya Gopalan Sree ◽  
QIANKAI BA ◽  
Seong Chan Cho ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Green Light ◽  
Transport Layer ◽  
Lead Free ◽  
Electron Transport Layer ◽  
Flat Panel Displays ◽  
Flat Panel ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices

Lead-free, non-toxic transition metal-based phosphorescent organic–inorganic hybrid (OIH) compounds are promising for next-generation flat-panel displays and solid-state light-emitting devices. In the present study, we fabricate highly efficient phosphorescent green-light-emitting diodes...

Organic-inorganic hybrid thin film light-emitting devices: interfacial engineering and device physics

2021 ◽  
Author(s):  
Chunxiu Zang ◽  
Mengxin Xu ◽  
Letian Zhang ◽  
Shihao Liu ◽  
Wenfa Xie
Keyword(s):  
Thin Film ◽  
Quantum Dots ◽  
Sandwich Structure ◽  
Device Physics ◽  
Hybrid Thin Film ◽  
Inorganic Hybrid ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Interfacial Engineering ◽  
Organic Light

Thin film light-emitting devices (LEDs) with sandwich structure, such as organic light emitting devices (OLEDs), quantum dots LEDs (QLEDs) and perovskite LEDs (PeLEDs), have attracted wide attentions because of their...

scholarly journals Recent Advances and Challenges in Halide Perovskite Crystals in Optoelectronic Devices from Solar Cells to Other Applications

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 39
Author(s):  
Seunghyun Rhee ◽  
Kunsik An ◽  
Kyung-Tae Kang
Keyword(s):  
Solar Cells ◽  
Optoelectronic Devices ◽  
Charge Carrier Mobility ◽  
Light Emitting ◽  
Fundamental Properties ◽  
Perovskite Materials ◽  
Hybrid Perovskite ◽  
Band Position ◽  
Different Characteristics ◽  
High Charge Carrier Mobility

Organic-inorganic hybrid perovskite materials have attracted tremendous attention as a key material in various optoelectronic devices. Distinctive optoelectronic properties, such as a tunable energy band position, long carrier diffusion lengths, and high charge carrier mobility, have allowed rapid progress in various perovskite-based optoelectronic devices (solar cells, photodetectors, light emitting diodes (LEDs), and lasers). Interestingly, the developments of each field are based on different characteristics of perovskite materials which are suitable for their own applications. In this review, we provide the fundamental properties of perovskite materials and categorize the usages in various optoelectronic applications. In addition, the prerequisite factors for those applications are suggested to understand the recent progress of perovskite-based optoelectronic devices and the challenges that need to be solved for commercialization.

scholarly journals Origin of unusual bandgap shift and dual emission in organic-inorganic lead halide perovskites

2016 ◽  
Vol 2 (10) ◽  
pp. e1601156 ◽  
Author(s):  
M. Ibrahim Dar ◽  
Gwénolé Jacopin ◽  
Simone Meloni ◽  
Alessandro Mattoni ◽  
Neha Arora ◽  
...  
Keyword(s):  
Density Functional ◽  
Valence Band Maximum ◽  
Dual Emission ◽  
Time Resolved ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Perovskite Materials ◽  
Halide Perovskites ◽  
Dynamics Simulations ◽  
Increasing Temperature

Emission characteristics of metal halide perovskites play a key role in the current widespread investigations into their potential uses in optoelectronics and photonics. However, a fundamental understanding of the molecular origin of the unusual blueshift of the bandgap and dual emission in perovskites is still lacking. In this direction, we investigated the extraordinary photoluminescence behavior of three representatives of this important class of photonic materials, that is, CH3NH3PbI3, CH3NH3PbBr3, and CH(NH2)2PbBr3, which emerged from our thorough studies of the effects of temperature on their bandgap and emission decay dynamics using time-integrated and time-resolved photoluminescence spectroscopy. The low-temperature (<100 K) photoluminescence of CH3NH3PbI3and CH3NH3PbBr3reveals two distinct emission peaks, whereas that of CH(NH2)2PbBr3shows a single emission peak. Furthermore, irrespective of perovskite composition, the bandgap exhibits an unusual blueshift by raising the temperature from 15 to 300 K. Density functional theory and classical molecular dynamics simulations allow for assigning the additional photoluminescence peak to the presence of molecularly disordered orthorhombic domains and also rationalize that the unusual blueshift of the bandgap with increasing temperature is due to the stabilization of the valence band maximum. Our findings provide new insights into the salient emission properties of perovskite materials, which define their performance in solar cells and light-emitting devices.

Sensitivity of mixed cation/halide perovskites to evaporation kinetics of DMSO at early stage

2021 ◽  
Author(s):  
GYUMIN KIM ◽  
Eun Seo Oh ◽  
Ajay Kumar Jena ◽  
Tsutomu Miyasaka
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Early Stage ◽  
Perovskite Solar Cells ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Annealing Step ◽  
Halide Perovskites ◽  
Kinetics Of ◽  
Evaporation Kinetics

Controlling the evaporation kinetics of the perovskite precursor (EKP) during the thermal annealing step of organic–inorganic hybrid perovskite solar cells (OIHPs) is important for achieving high performance. Although regulation of...

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