scholarly journals Solution Based Synthesis of Cs4PbBr6 Perovskite Particles with High Luminescence and Stability

MRS Advances ◽  
2018 ◽  
Vol 3 (45-46) ◽  
pp. 2825-2831 ◽  
Author(s):  
Brian Billstrand ◽  
Kaifu Bian ◽  
Casey Karler ◽  
Dongmei Ye ◽  
Austin Hwang ◽  
...  
Keyword(s):  
Colloidal Particles ◽  
Atmospheric Conditions ◽  
Photoluminescence Spectra ◽  
Long Term Stability ◽  
Mild Conditions ◽  
Convenient Synthesis ◽  
Low Dimensional ◽  
Lead Halide ◽  
High Absorption

ABSTRACTLow dimensional lead halide perovskite particles are of tremendous interest due to their size-tunable band gaps, low exciton binding energy, high absorption coefficients, outstanding quantum and photovoltaic efficiencies. Herein we report a new solution-based synthesis of stabilized Cs4PbBr6 perovskite particles with high luminescence. This method requires only mild conditions and produces colloidal particles that are ideal for highly efficient solution-based device fabrications. The synthesized microstructures not only display outstanding luminescence quantum yield but also long term stability in atmospheric conditions. Partial halide substitutions were also demonstrated to extend photoluminescence spectra of the perovskite particles. This convenient synthesis and optical tunability of Cs4PbBr6 perovskite particles will be advantageous for future applications of optoelectronic advices.

Photoluminescence Detection of Native Defects in The Surface Region of Bulk CdTe

1989 ◽  
Vol 161 ◽  
Author(s):  
P.M. Amirtharaj ◽  
N.K. Dhar
Keyword(s):  
Chemical Treatment ◽  
Surface Region ◽  
Atmospheric Conditions ◽  
Native Defects ◽  
Long Term Stability ◽  
Small Loss ◽  
Device Processing ◽  
Large Enhancement ◽  
Excitonic Feature

ABSTRACTThe native defects introduced by Br2/CH3 OH etching and aging under atmospheric conditions have been investigated in In doped, bulk CdTe using photoluminescence (PL) spectroscopy. The results indicate a large enhancement of the Cd vacancy related 1.5896 eV excitonic feature with chemical treatment and aging. Hence, the primary perturbation is interpreted to be a small loss of Cd within the sampling region. This result is compared and contrasted with previous studies of etching induced modifications. The implications of Cd depletion on interpreting PL spectra, device processing and long term stability are considered.

scholarly journals Review of Interface Passivation of Perovskite Layer

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 775
Author(s):  
Yinghui Wu ◽  
Dong Wang ◽  
Jinyuan Liu ◽  
Houzhi Cai
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Interface Engineering ◽  
Perovskite Layer ◽  
Long Term Stability ◽  
Interface Passivation ◽  
Silicon Based ◽  
Lead Halide ◽  
Main Factor

Perovskite solar cells (PSCs) are the most promising substitute for silicon-based solar cells. However, their power conversion efficiency and stability must be improved. The recombination probability of the photogenerated carriers at each interface in a PSC is much greater than that of the bulk phase. The interface of a perovskite polycrystalline film is considered to be a defect-rich area, which is the main factor limiting the efficiency of a PSC. This review introduces and summarizes practical interface engineering techniques for improving the efficiency and stability of organic–inorganic lead halide PSCs. First, the effect of defects at the interface of the PSCs, the energy level alignment, and the chemical reactions on the efficiency of a PSC are summarized. Subsequently, the latest developments pertaining to a modification of the perovskite layers with different materials are discussed. Finally, the prospect of achieving an efficient PSC with long-term stability through the use of interface engineering is presented.

Investigation of Emission Behaviour of Perovskite Nanocrystals into TiO2 Nano to Microsphere

2021 ◽  
Author(s):  
Abha Jha ◽  
Hari Shankar ◽  
Prasenjit Kar
Keyword(s):  
Optoelectronic Devices ◽  
Promising Material ◽  
Perovskite Nanocrystals ◽  
Term Stability ◽  
Long Term Stability ◽  
Halide Perovskites ◽  
Lead Halide

Organic-inorganic methylammonium lead halide perovskites nanocrystals have emerged as a promising material for optoelectronic devices. But due to the lack of long-term stability of perovskite nanocrystals, its applications have been...

Pyrite-Based Bi-Functional Layer for Long-Term Stability and High-Performance of Organo-Lead Halide Perovskite Solar Cells

2016 ◽  
Vol 26 (30) ◽  
pp. 5400-5407 ◽  
Author(s):  
Bonkee Koo ◽  
Heesuk Jung ◽  
Minwoo Park ◽  
Jae-Yup Kim ◽  
Hae Jung Son ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Functional Layer ◽  
Term Stability ◽  
Long Term Stability ◽  
Halide Perovskite ◽  
Lead Halide

Long-Term Stability of Optical Properties of Colloidal CdSe Nanocrystals in Polymer Matrices

2019 ◽  
Vol 18 (03n04) ◽  
pp. 1940052
Author(s):  
Yu. M. Azhniuk ◽  
V. V. Lopushansky ◽  
A. V. Gomonnai ◽  
B. V. Lopushanska ◽  
A. E. Raevskaya ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Absorption ◽  
Polyvinyl Alcohol ◽  
Aqueous Solutions ◽  
Polymer Matrices ◽  
Cdse Nanocrystals ◽  
Term Stability ◽  
Long Term Stability ◽  
Mild Conditions

Properties of CdSe nanocrystals (NCs) fabricated in aqueous solutions at relatively mild conditions in the presence of gelatine and stabilized in polymer (gelatine, gelatine + polyvinylpyrrolidone, polyvinyl alcohol) matrices are characterized by Raman, optical absorption and photoluminescence spectroscopies. The effect of heating of the reaction mixture on the average NC size is discussed.

Ensuring long-term stability of data quality selection for H.E.S.S. under challenging atmospheric conditions

2012 ◽  
Author(s):  
Joachim Hahn ◽  
Raquel de los Reyes ◽  
Konrad Bernlöhr ◽  
Christoph Deil ◽  
Henning Gast ◽  
...  
Keyword(s):  
Data Quality ◽  
Atmospheric Conditions ◽  
Term Stability ◽  
Long Term Stability ◽  
Selection For

Penetrated 2D/3D Hybrid Heterojunction for High-Performance Perovskite Solar Cells

2021 ◽  
Author(s):  
Jianguo Sun ◽  
Xuliang Zhang ◽  
Xufeng Ling ◽  
Yingguo Yang ◽  
Yao Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Inorganic Hybrid ◽  
Long Term Stability ◽  
The Poor ◽  
Halide Perovskite ◽  
Lead Halide

Organic-inorganic hybrid lead halide perovskite solar cells (PSCs) attracted tremendous interest due to their excellent photovoltaic performance, while they still suffer from the poor long-term stability. Here, a penetrated 2D/3D...

Evaluation of long-term stability of milk beverages by a novel method for rapid determination of aggregation forces between colloidal particles

2014 ◽  
Vol 34 ◽  
pp. 177-183 ◽  
Author(s):  
Kentaro Matsumiya ◽  
Takashi Inoue ◽  
Joju Niida ◽  
Takao Katagiri ◽  
Takahisa Nishizu ◽  
...  
Keyword(s):  
Colloidal Particles ◽  
Rapid Determination ◽  
Term Stability ◽  
Long Term Stability ◽  
Novel Method
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