scholarly journals Structural and Optical Properties of Solvated PbI2 in γ-Butyrolactone: Insight into the Solution Chemistry of Lead Halide Perovskite Precursors

2020 ◽  
Vol 11 (15) ◽  
pp. 6139-6145
Author(s):  
Eros Radicchi ◽  
Ali Kachmar ◽  
Edoardo Mosconi ◽  
Beatrice Bizzarri ◽  
Francesca Nunzi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Solution Chemistry ◽  
Structural And Optical Properties ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Insight Into

scholarly journals Seed Mediated Synthesis of Colloidal Halide Perovskite Nanoplatelets

2021 ◽  
Author(s):  
C. Meric Guvenc ◽  
sinan balci
Keyword(s):  
Optical Properties ◽  
Halide Salt ◽  
Seed Solution ◽  
Synthesis Route ◽  
Line Widths ◽  
Halide Perovskite ◽  
Seed Mediated ◽  
A Site ◽  
First Time ◽  
Lead Halide

<p><b>Two-dimensional lead halide perovskite nanoplatelets (2D LHP NPLs) have been emerging as one of the most promising semiconductor nanomaterials due to their narrow absorption and emission line widths, tunable bandgaps, high exciton binding energies, high defect tolerance as well as highly localized energy states. Colloidal synthesis of 2D LHP NPLs is generally performed using hot-injection or ligand assisted precipitation techniques (LARP). In the LARP method, perovskites are synthesized in polar solvents, which decrease the stability of the 2D LHP NPLs due to their weakly bonded nature. In fact, the presence of residual polar solvent in the LHP NPL colloid can cause deterioration of thickness uniformity, degradation of NPLs to parent precursors, and undesired phase transformations. Herein, for the first time, we report facile seed-mediated synthesis route of monolayer, 2-monolayers, and thicker lead halide perovskite nanoplatelets without using A site cation halide salt (AX</b><b>;</b><b> A = Cesium, methylammonium, formamidinium and, X = Cl, Br, I) and long chain alkylammonium halide salts (LX; L = oleylammonium, octylammonium, butylammonium and, X = Cl, Br, I). The seed solution has been synthesized by reacting lead (II) halide salt and coordinating ligands (oleylamine or octylamine and oleic acid) in nonpolar high boiling solvent (1-octadecene). The seed mediated synthesis has been carried out in hexane by reacting seed solution with A-site cation precursors (Cs-oleate, FA-oleate, or diluted MA solution in hexane) under ambient conditions. More importantly, the seed mediated growth of NPLs has been tracked for the first time by performing in-situ optical measurements. Furthermore, the optical properties and morphologies of the seeds have been extensively studied. We find that our facile synthesis route provides highly stable, monodisperse NPLs with narrow absorption, and photoluminescence line widths (68-201 meV), and high PLQY (37.6-1.66% for 2ML NPLs). Furthermore, anion exchange reactions have been performed by mixing pre-synthesized LHP NPLs with counter halide seeds. The optical properties of NPLs have been affectively tuned by postsynthetic chemical reactions without changing the thickness of the NPLs. We anticipate that our new synthetic route provides further understanding of growth dynamics of LHP NPLs.</b></p>

Insight into the Origins of Figures of Merit and Design Strategies for Organic/Inorganic Lead‐Halide Perovskite Solar Cells

Solar RRL ◽  
2020 ◽  
Vol 4 (12) ◽  
pp. 2000452
Author(s):  
Feng Qiu ◽  
Jingyu Chu ◽  
Zirui Liu ◽  
Jinzhong Xiang ◽  
Jie Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Design Strategies ◽  
Figures Of Merit ◽  
Inorganic Lead ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Insight Into

Effects of alloying on the optical properties of organic–inorganic lead halide perovskite thin films

2016 ◽  
Vol 4 (33) ◽  
pp. 7775-7782 ◽  
Author(s):  
Paul F. Ndione ◽  
Zhen Li ◽  
Kai Zhu
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Optical Constants ◽  
Optical Transitions ◽  
Inorganic Perovskite ◽  
Inorganic Lead ◽  
Halide Perovskite ◽  
Lead Halide

Spectroscopic ellipsometry analysis of optical transitions and optical constants in hybrid organic–inorganic perovskite alloys.

Bright emission and high photoluminescence CsPb2Br5 NCs encapsulated in mesoporous silica with ultrahigh stability and excellent optical properties for white light-emitting diodes

2019 ◽  
Vol 7 (43) ◽  
pp. 13585-13593 ◽  
Author(s):  
Guangzhan Shao ◽  
Yi Zhao ◽  
Yanxia Yu ◽  
Haisheng Yang ◽  
Xiaodong Liu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Mesoporous Silica ◽  
White Light ◽  
Light Emitting Diodes ◽  
Optoelectronic Properties ◽  
Light Emitting ◽  
Halide Perovskite ◽  
White Light Emitting Diodes ◽  
Lead Halide ◽  
Bright Emission

All-inorganic cesium lead halide perovskite CsPb2Br5 nanocrystals (NCs) have attracted tremendous attention owing to their unique optoelectronic properties.

Molecular‐Level Insight into Correlation between Surface Defects and Stability of Methylammonium Lead Halide Perovskite Under Controlled Humidity

Small Methods ◽  
2020 ◽  
pp. 2000834
Author(s):  
Mohammad Ali Akhavan Kazemi ◽  
Parth Raval ◽  
Kirill Cherednichekno ◽  
Jean‐Noel Chotard ◽  
Anurag Krishna ◽  
...  
Keyword(s):  
Surface Defects ◽  
Molecular Level ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Insight Into

Effect of intermediate phases on the optical properties of PbI2-rich CH3NH3PbI3 organic–inorganic hybrid perovskite

2019 ◽  
Vol 21 (9) ◽  
pp. 5253-5261 ◽  
Author(s):  
Alonso W. P. Sanches ◽  
Marco A. T. da Silva ◽  
Neusmar J. A. Cordeiro ◽  
Alexandre Urbano ◽  
Sidney A. Lourenço
Keyword(s):  
Optical Properties ◽  
Spin Coating ◽  
Inorganic Hybrid ◽  
Spin Coating Method ◽  
Intermediate Phases ◽  
Hybrid Perovskite ◽  
Coating Method ◽  
Halide Perovskite ◽  
Lead Halide

Intermediate phases in the methylammonium lead halide perovskite (CH3NH3PbI3) films produced by the two-step spin coating method.

High Pressure Structural and Optical Properties of Two-Dimensional Hybrid Halide Perovskite (CH3NH3)3Bi2Br9

2019 ◽  
Vol 58 (2) ◽  
pp. 1621-1626 ◽  
Author(s):  
Qian Li ◽  
Lixiao Yin ◽  
Zhongwei Chen ◽  
Kerong Deng ◽  
Shuiping Luo ◽  
...  
Keyword(s):  
High Pressure ◽  
Optical Properties ◽  
Two Dimensional ◽  
Structural And Optical Properties ◽  
Halide Perovskite

Methylammonium Governs Structural and Optical Properties of Hybrid Lead Halide Perovskites through Dynamic Hydrogen Bonding

2021 ◽  
Author(s):  
Gabriele Saleh ◽  
Giulia Biffi ◽  
Francesco Di Stasio ◽  
Beatriz Martín-García ◽  
Ahmed L. Abdelhady ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hydrogen Bonding ◽  
Structural And Optical Properties ◽  
Halide Perovskites ◽  
Lead Halide
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