scholarly journals Beyond the Phase Segregation: Probing the Irreversible Phase Reconstruction of Mixed‐Halide Perovskites

2021 ◽  
pp. 2103948
Author(s):  
Zhe Li ◽  
Xin Zheng ◽  
Xuan Xiao ◽  
Yongkang An ◽  
Yanbo Wang ◽  
...  
Keyword(s):  
Phase Segregation ◽  
Phase Reconstruction ◽  
Halide Perovskites

scholarly journals Light-Induced Anion Phase Segregation in Mixed Halide Perovskites

2017 ◽  
Vol 3 (1) ◽  
pp. 204-213 ◽  
Author(s):  
Michael C. Brennan ◽  
Sergiu Draguta ◽  
Prashant V. Kamat ◽  
Masaru Kuno
Keyword(s):  
Phase Segregation ◽  
Halide Perovskites

scholarly journals Multi-cation Synergy Suppresses Phase Segregation in Mixed-Halide Perovskites

Joule ◽  
2019 ◽  
Vol 3 (7) ◽  
pp. 1746-1764 ◽  
Author(s):  
Hoang X. Dang ◽  
Kai Wang ◽  
Masoud Ghasemi ◽  
Ming-Chun Tang ◽  
Michele De Bastiani ◽  
...  
Keyword(s):  
Phase Segregation ◽  
Halide Perovskites

How Chloride Suppresses Photoinduced Phase Segregation in Mixed Halide Perovskites

2020 ◽  
Vol 32 (14) ◽  
pp. 6206-6212 ◽  
Author(s):  
Junsang Cho ◽  
Prashant V. Kamat
Keyword(s):  
Phase Segregation ◽  
Halide Perovskites

scholarly journals Thermodynamic Stabilization of Mixed-Halide Perovskites against Phase Segregation

2020 ◽  
Vol 1 (8) ◽  
pp. 100120 ◽  
Author(s):  
Eline M. Hutter ◽  
Loreta A. Muscarella ◽  
Francesca Wittmann ◽  
Jan Versluis ◽  
Lucie McGovern ◽  
...  
Keyword(s):  
Phase Segregation ◽  
Thermodynamic Stabilization ◽  
Halide Perovskites

scholarly journals Doping and phase segregation in Mn2+- and Co2+-doped lead halide perovskites from133Cs and1H NMR relaxation enhancement

2019 ◽  
Vol 7 (5) ◽  
pp. 2326-2333 ◽  
Author(s):  
Dominik J. Kubicki ◽  
Daniel Prochowicz ◽  
Arthur Pinon ◽  
Gabriele Stevanato ◽  
Albert Hofstetter ◽  
...  
Keyword(s):  
Broad Class ◽  
Nmr Relaxation ◽  
Phase Segregation ◽  
Photovoltaic Properties ◽  
Halide Perovskites ◽  
Lead Halide

Lead halide perovskites belong to a broad class of compounds with appealing optoelectronic and photovoltaic properties.

Persistent Dopants and Phase Segregation in Organolead Mixed-Halide Perovskites

2016 ◽  
Vol 28 (19) ◽  
pp. 6848-6859 ◽  
Author(s):  
Bryan A. Rosales ◽  
Long Men ◽  
Sarah D. Cady ◽  
Michael P. Hanrahan ◽  
Aaron J. Rossini ◽  
...  
Keyword(s):  
Phase Segregation ◽  
Halide Perovskites

scholarly journals Phase segregation in mixed-halide perovskites affects charge-carrier dynamics while preserving mobility

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Silvia G. Motti ◽  
Jay B. Patel ◽  
Robert D. J. Oliver ◽  
Henry J. Snaith ◽  
Michael B. Johnston ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Management Strategies ◽  
Phase Segregation ◽  
Carrier Dynamics ◽  
Optical Pump ◽  
Charge Carrier Dynamics ◽  
Halide Perovskites ◽  
Probe Spectroscopy ◽  
The Impact

AbstractMixed halide perovskites can provide optimal bandgaps for tandem solar cells which are key to improved cost-efficiencies, but can still suffer from detrimental illumination-induced phase segregation. Here we employ optical-pump terahertz-probe spectroscopy to investigate the impact of halide segregation on the charge-carrier dynamics and transport properties of mixed halide perovskite films. We reveal that, surprisingly, halide segregation results in negligible impact to the THz charge-carrier mobilities, and that charge carriers within the I-rich phase are not strongly localised. We further demonstrate enhanced lattice anharmonicity in the segregated I-rich domains, which is likely to support ionic migration. These phonon anharmonicity effects also serve as evidence of a remarkably fast, picosecond charge funnelling into the narrow-bandgap I-rich domains. Our analysis demonstrates how minimal structural transformations during phase segregation have a dramatic effect on the charge-carrier dynamics as a result of charge funnelling. We suggest that because such enhanced recombination is radiative, performance losses may be mitigated by deployment of careful light management strategies in solar cells.

Light induced degradation in mixed-halide perovskites

2019 ◽  
Vol 7 (30) ◽  
pp. 9326-9334 ◽  
Author(s):  
Shuai Ruan ◽  
Maciej-Adam Surmiak ◽  
Yinlan Ruan ◽  
David P. McMeekin ◽  
Heike Ebendorff-Heidepriem ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Phase Segregation ◽  
Decomposition Process ◽  
Halide Perovskites ◽  
Photo Stability

The photo-stability of MAPbIxBr3−x is systematically studied by in situ photoluminescence and Raman spectroscopy to reveal the phase segregation/decomposition process.

Phase segregation in inorganic mixed-halide perovskites: from phenomena to mechanisms

2020 ◽  
Vol 8 (11) ◽  
pp. A56 ◽  
Author(s):  
Yutao Wang ◽  
Xavier Quintana ◽  
Jiyun Kim ◽  
Xinwei Guan ◽  
Long Hu ◽  
...  
Keyword(s):  
Phase Segregation ◽  
Halide Perovskites

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
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