scholarly journals Methylammonium Cation Dynamics in Methylammonium Lead Halide Perovskites: A Solid-State NMR Perspective

2018 ◽  
Vol 122 (6) ◽  
pp. 1560-1573 ◽  
Author(s):  
Guy M. Bernard ◽  
Roderick E. Wasylishen ◽  
Christopher I. Ratcliffe ◽  
Victor Terskikh ◽  
Qichao Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Halide Perovskites ◽  
Lead Halide

Phase Segregation in Potassium-Doped Lead Halide Perovskites from 39K Solid-State NMR at 21.1 T

2018 ◽  
Vol 140 (23) ◽  
pp. 7232-7238 ◽  
Author(s):  
Dominik J. Kubicki ◽  
Daniel Prochowicz ◽  
Albert Hofstetter ◽  
Shaik M. Zakeeruddin ◽  
Michael Grätzel ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Phase Segregation ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Solid-State NMR and NQR Spectroscopy of Lead-Halide Perovskite Materials

2020 ◽  
Vol 142 (46) ◽  
pp. 19413-19437
Author(s):  
Laura Piveteau ◽  
Viktoriia Morad ◽  
Maksym V. Kovalenko
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Perovskite Materials ◽  
Halide Perovskite ◽  
Lead Halide

scholarly journals Layer-by-Layer Structural Identification of 2D Ruddlesden-Popper Hybrid Lead Iodide Perovskites by Solid-State NMR Spectroscopy

2020 ◽  
Author(s):  
Jeongjae Lee ◽  
Woocheol Lee ◽  
Keehoon Kang ◽  
Takhee Lee ◽  
Sung Keun Lee
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Structural Features ◽  
Layer By Layer ◽  
Lead Iodide ◽  
Materials Properties ◽  
Non Invasive ◽  
Local Bonding ◽  
Halide Perovskites

Application of two-dimensional (2D) organic-inorganic hybrid halide perovskites for optoelectronic devices requires detailed understanding of the local structural features including the Pb-I bonding in the 2D layers and the capping ligand-perovskite interaction. In this study, we show that <sup>1</sup>H and <sup>207</sup>Pb solid-state Nuclear Magnetic Resonance (NMR) spectroscopy can serve as a non-invasive and complementary technique to quantify the composition and to probe the local structural features of 2D Ruddlesden-Popper phase BA<sub>2</sub>MA<i><sub>n</sub></i><sub>-1</sub>Pb<i><sub>n</sub></i>I<sub>3<i>n</i>+1</sub> (<i>n</i>=1-4) with butylammonium (BA) spacers. <sup>207</sup>Pb echo and <sup>1</sup>H-detected <sup>207</sup>Pb→<sup>1</sup>H heteronuclear correlation (HETCOR) experiments enables layer-by-layer structural detection of 2D halide perovskites. We show that the observed correlation between <sup>207</sup>Pb NMR shifts and mean Pb-I bond lengths around each Pb site allows us to probe the local bonding environment of Pb via its <sup>207</sup>Pb NMR shift. We envisage that this technique will be vital for better understanding the materials properties as determined by the local atomistic environments in multi-dimensional halide perovskites.

Mechanochemical Synthesis of Methylammonium Lead Mixed–Halide Perovskites: Unraveling the Solid-Solution Behavior Using Solid-State NMR

2018 ◽  
Vol 30 (7) ◽  
pp. 2309-2321 ◽  
Author(s):  
Abhoy Karmakar ◽  
Abdelrahman M. Askar ◽  
Guy M. Bernard ◽  
Victor V. Terskikh ◽  
Michelle Ha ◽  
...  
Keyword(s):  
Solid Solution ◽  
Solid State ◽  
Mechanochemical Synthesis ◽  
Solid State Nmr ◽  
Solution Behavior ◽  
Halide Perovskites

scholarly journals Interfaces in metal halide perovskites probed by solid-state NMR spectroscopy

2021 ◽  
Author(s):  
Clayton J. Dahlman ◽  
Dominik J. Kubicki ◽  
G. N. Manjunatha Reddy
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solid State Nmr ◽  
Light Harvesting ◽  
Metal Halide ◽  
Single Junction ◽  
Halide Perovskites ◽  
Conversion Efficiencies

Metal halide perovskites (MHPs) are promising light harvesting and emitting materials that have enabled solar energy conversion efficiencies of over 25% in solution-processed single-junction cells, and found applications in flexible...

scholarly journals Influence of Hidden Halogen Mobility on Local Structure of CsSn(Cl1-xBrx)3 Mixed-Halide Perovskites by Solid-State NMR

2021 ◽  
Author(s):  
Abhoy Karmakar ◽  
Amit Bhattacharya ◽  
Diganta Sarkar ◽  
Guy Bernard ◽  
Arthur Mar ◽  
...  
Keyword(s):  
Solid State ◽  
Local Structure ◽  
Solid State Nmr ◽  
Lead Free ◽  
Optoelectronic Materials ◽  
Halide Perovskites

Tin halide perovskites are promising candidates for lead-free photovoltaic and optoelectronic materials, but not all of them have been well characterized. It is essential to determine how the bulk photophysical...

scholarly journals 113Cd Solid-State NMR at 21.1 T Reveals the Local Structure and Passivation Mechanism of Cadmium in Hybrid and All-Inorganic Halide Perovskites

2020 ◽  
Vol 5 (9) ◽  
pp. 2964-2971
Author(s):  
Dominik J. Kubicki ◽  
Daniel Prochowicz ◽  
Albert Hofstetter ◽  
Brennan J. Walder ◽  
Lyndon Emsley
Keyword(s):  
Solid State ◽  
Local Structure ◽  
Solid State Nmr ◽  
Halide Perovskites

scholarly journals Exploring Multidimensional Lead Halide Perovskites Using Ultra−wideline 35/37Cl NMR Spectroscopy

2021 ◽  
Author(s):  
Diganta Sarkar ◽  
Riley Hooper ◽  
Abhoy Karmakar ◽  
Victor Terskikh ◽  
Vladimir Michaelis
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Inorganic Hybrid ◽  
Nmr Parameters ◽  
Ultrahigh Magnetic Fields ◽  
Halide Perovskites ◽  
Low Dimensional ◽  
A Site ◽  
Distinct Features ◽  
Lead Halide

We report a rapid solid−state 35/37Cl NMR strategy for 3D organic−inorganic hybrid and low−dimensional (2D and 0D) all−inorganic lead−based perovskites embracing ultra-wideline acquisition approaches and moderate to ultrahigh magnetic fields. The observed quadrupolar NMR parameters (CQ and η), supported by GIPAW−DFT computations, revealed distinct features for unique local Cl environments with the variation of the A−site and dimensionality. 35Cl CQ values display the potential for becoming an informative probe of distinct Cl chemical environments.

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