scholarly journals Photoinduced charge carrier dynamics and spectral band filling in organometal halide perovskites

2019 ◽  
Vol 68 (1) ◽  
pp. 018401
Author(s):  
Zhao Wan-Ying ◽  
Ku Zhi-Liang ◽  
Jin Zuan-Ming ◽  
Liu Wei-Min ◽  
Lin Xian ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Spectral Band ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Band Filling ◽  
Halide Perovskites ◽  
Photoinduced Charge

Charge-carrier dynamics in hybrid metal halide perovskites (Conference Presentation)

2016 ◽  
Author(s):  
Rebecca L. Milot ◽  
Waqaas Rehman ◽  
Giles E. Eperon ◽  
Henry J. Snaith ◽  
Michael B. Johnston ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Metal Halide ◽  
Charge Carrier Dynamics ◽  
Halide Perovskites

scholarly journals Charge-Carrier Dynamics in 2D Hybrid Metal–Halide Perovskites

Nano Letters ◽  
2016 ◽  
Vol 16 (11) ◽  
pp. 7001-7007 ◽  
Author(s):  
Rebecca L. Milot ◽  
Rebecca J. Sutton ◽  
Giles E. Eperon ◽  
Amir Abbas Haghighirad ◽  
Josue Martinez Hardigree ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Metal Halide ◽  
Charge Carrier Dynamics ◽  
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.

Gradient formation and charge carrier dynamics of CuBiI4 based perovskite-like solar cells

2020 ◽  
Vol 4 (6) ◽  
pp. 2800-2807 ◽  
Author(s):  
Haili Yu ◽  
Busheng Zhang ◽  
Ruijuan Qi ◽  
Nannan Qu ◽  
Chaoliang Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Gradient Formation ◽  
Carrier Transportation ◽  
Photoinduced Charge

The formation of a Bi gradient with a Bi/Cu bilayer as the precursor can improve the photoinduced charge carrier transportation in CuBiI4 films.

scholarly journals Photoinduced charge carrier dynamics in Hubbard two-leg ladders and chains

2019 ◽  
Vol 99 (3) ◽  
Author(s):  
Can Shao ◽  
Takami Tohyama ◽  
Hong-Gang Luo ◽  
Hantao Lu
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Photoinduced Charge

Site-Dependent Photoinduced Charge Carrier Dynamics in Nitrogen/Fluorine Doped TiO2 Nanoparticles

2021 ◽  
Author(s):  
Yeonsig Nam ◽  
Hao Li ◽  
Jin Yong Lee
Keyword(s):  
Charge Carrier ◽  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Light Absorption ◽  
Carrier Dynamics ◽  
Fluorine Doping ◽  
Visible Light Absorption ◽  
Doped Tio2 ◽  
Charge Carrier Dynamics ◽  
Photoinduced Charge

Nitrogen/fluorine doping of TiO2 nanoparticles (NPs) serves to play an important role with regard to visible light absorption and charge carrier dynamics. However, it is largely unknown how nitrogen/fluorine doping...

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