scholarly journals Synthesis, Structure and Photoluminescence Properties of 2D Organic–Inorganic Hybrid Perovskites

2019 ◽  
Vol 9 (23) ◽  
pp. 5211 ◽  
Author(s):  
Liu ◽  
Li ◽  
Yao ◽  
He ◽  
Liu ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
Laser Power ◽  
Radiation Detection ◽  
Photoluminescence Properties ◽  
Atom Number ◽  
Layer Spacing ◽  
Inorganic Hybrid ◽  
Potential Applications ◽  
Halide Perovskites ◽  
Organic Amines

Two-dimensional (2D) layered hybrid organic–inorganic perovskites have potential applications in solar cells, electroluminescent devices and radiation detection because of their unique optoelectronic properties. In this paper, four 2D layered hybrid organic–inorganic halide perovskites of (C6H5CH2NH3)2PbCl4, (C6H5CH2NH3)2PbBr4, (C6H5CH2NH3)2PbI4 and (C4H9NH3)2PbBr4 were synthesized by solvent evaporation. Their crystal structure and surface morphology were studied. The effects of different halogens and organic amines on perovskites’ absorption spectra were investigated, and the photoluminescence (PL) properties were studied by femtosecond ultrafast spectroscopy. The experimental results show that the four perovskites are well crystallized and oriented. With the increase of halogen atom number (Cl, Br, I) in turn, the UV-Vis absorption spectra peaks of perovskites redshift due to the increasing of the layer spacing, but organic amines have little effect on the spectra of perovskites. The PL intensity increases with increasing laser power, but the lifetime decreases with increasing laser power, which is mainly due to the non-geminate recombination. This research is of great significance for realizing the spectral regulation of organic–inorganic hybrid perovskites and promoting their application in nano-photonics and optoelectronic devices.

scholarly journals Preparation and Two-Photon Photoluminescence Properties of Organic Inorganic Hybrid Perovskites (C6H5CH2NH3)2PbBr4 and (C6H5CH2NH3)2PbI4

2018 ◽  
Vol 8 (11) ◽  
pp. 2286 ◽  
Author(s):  
Shuai Liu ◽  
Fang Li ◽  
Xiaobo Han ◽  
Litu Xu ◽  
Fuqiang Yao ◽  
...  
Keyword(s):  
Laser Power ◽  
Radiation Detection ◽  
Photoluminescence Properties ◽  
Inorganic Hybrid ◽  
Two Photon ◽  
Structure Morphology ◽  
Potential Applications ◽  
Pl Intensity ◽  
Stacking Structure ◽  
Inorganic Components

Organic inorganic hybrid perovskites have potential applications in solar cells, electroluminescent devices and radiation detection because of their unique optoelectronic properties. In this paper, the perovskites (C6H5CH2NH3)2PbBr4 and (C6H5CH2NH3)2PbI4 were synthesized by solvent evaporation. The crystal structure, morphology, absorption spectrum, laser power dependence of the photoluminescence (PL) intensity and lifetime were studied. The results showed that the perovskites (C6H5CH2NH3)2PbBr4 and (C6H5CH2NH3)2PbI4 display a layered stacking structure of organic and inorganic components. The absorption peaks are located at 392 nm (3.16 eV) and 516 nm (2.40 eV), respectively. It was observed that the PL intensity and photoluminescence quantum yield (PLQY) increases with increasing laser power, and that the PL lifetime decreases with increasing laser power, which is mainly due to the non-geminate recombination.

scholarly journals Photophysics of 2D Organic–Inorganic Hybrid Lead Halide Perovskites: Progress, Debates, and Challenges

2021 ◽  
pp. 2001843
Author(s):  
Zhixing Gan ◽  
Yingchun Cheng ◽  
Weijian Chen ◽  
Kian Ping Loh ◽  
Baohua Jia ◽  
...  
Keyword(s):  
Inorganic Hybrid ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Understanding Thermal and A‐Thermal Trapping Processes in Lead Halide Perovskites Towards Effective Radiation Detection Schemes

2021 ◽  
pp. 2104879
Author(s):  
Carmelita Rodà ◽  
Mauro Fasoli ◽  
Matteo L. Zaffalon ◽  
Francesca Cova ◽  
Valerio Pinchetti ◽  
...  
Keyword(s):  
Radiation Detection ◽  
Halide Perovskites ◽  
Effective Radiation ◽  
Detection Schemes ◽  
Lead Halide

scholarly journals Recent advances in radiation detection technologies enabled by metal-halide perovskites

2021 ◽  
Author(s):  
Tiebin Yang ◽  
Feng Li ◽  
Rongkun Zheng
Keyword(s):  
Gamma Rays ◽  
Performance Optimization ◽  
Radiation Detection ◽  
High Energy ◽  
Device Performance ◽  
High Energy Radiation ◽  
Energy Radiation ◽  
Halide Perovskites ◽  
Alpha Beta ◽  
Detection Technologies

Perovskite halides hold great potential for high-energy radiation detection. Recent advancements in detecting alpha-, beta-, X-, and gamma-rays by perovskite halides are reviewed and an outlook on the device performance optimization is provided.

scholarly journals Perylene Imide-Based Optical Chemosensors for Vapor Detection

Chemosensors ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Miao Zhang ◽  
Jiangfan Shi ◽  
Chenglong Liao ◽  
Qingyun Tian ◽  
Chuanyi Wang ◽  
...  
Keyword(s):  
Molecular Design ◽  
Phase Detection ◽  
Time Reversibility ◽  
Strong Electron ◽  
Vapor Detection ◽  
Multiple Sensors ◽  
Optical Chemosensors ◽  
Potential Applications ◽  
High Fluorescence ◽  
Organic Amines

Perylene imide (PI) molecules and materials have been extensively studied for optical chemical sensors, particularly those based on fluorescence and colorimetric mode, taking advantage of the unique features of PIs such as structure tunability, good thermal, optical and chemical stability, strong electron affinity, strong visible light absorption and high fluorescence quantum yield. PI-based optical chemosensors have now found broad applications in gas phase detection of chemicals, including explosives, biomarkers of some food and diseases (such as organic amines (alkylamines and aromatic amines)), benzene homologs, organic peroxides, phenols and nitroaromatics, etc. In this review, the recent research on PI-based fluorometric and colorimetric sensors, as well as array technology incorporating multiple sensors, is reviewed along with the discussion of potential applications in environment, health and public safety areas. Specifically, we discuss the molecular design and aggregate architecture of PIs in correlation with the corresponding sensor performances (including sensitivity, selectivity, response time, recovery time, reversibility, etc.). We also provide a perspective summary highlighting the great potential for future development of PIs optical chemosensors, especially in the sensor array format that will largely enhance the detection specificity in complexed environments.

Organic–inorganic hybrid lead halide perovskites for optoelectronic and electronic applications

2016 ◽  
Vol 45 (3) ◽  
pp. 655-689 ◽  
Author(s):  
Yixin Zhao ◽  
Kai Zhu
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Recent Progress ◽  
Research Issues ◽  
Inorganic Hybrid ◽  
Halide Perovskites ◽  
Film Synthesis ◽  
Lead Halide

This article reviews recent progress on hybrid perovskites including crystal/thin-film synthesis, structural/chemical/electro-optical properties, (opto)electronic applications, and research issues/challenges.

scholarly journals Photoluminescence properties of ZrO2:Gd3+, ZrO2:Gd3+ – Dy3+ and ZrO2:Gd3+ – Yb3+ phosphors by Pechini method

2018 ◽  
Vol 36 (1) ◽  
pp. 157-161
Author(s):  
Esra Yildiz
Keyword(s):  
Powder Diffraction ◽  
Optical Materials ◽  
Pechini Method ◽  
Photoluminescence Properties ◽  
Emission Analysis ◽  
Lifetime Measurements ◽  
X Ray ◽  
Thermal Gravimetry ◽  
Potential Applications ◽  
Scanning Electron

AbstractZr0.99Gd0.01O2, Zr0.98Gd0.01Dy0.01O2 and Zr0.98Gd0.01Yb0.1O2 phosphors were synthesized by Pechini method at 1200 °C for 12 h in air. The phosphors were characterized by using X-ray powder diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG), scanning electron microscopy (SEM) and photoluminescence spectrofluorometer (PL). X-ray powder diffraction studies showed that the phosphors were crystallized as monoclinic and tetragonal multiphases. The particle size of the phosphors after heat treatment at 1200 °C was found to be of 200 nm to 250 nm. Luminescence studies on these phosphors have been carried out on the emission and excitation, along with lifetime measurements. The results of emission analysis indicate that the phosphors are expected to find potential applications as new optical materials.

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