scholarly journals Tuning Charge Carrier Dynamics and Surface Passivation in Organolead Halide Perovskites with Capping Ligands and Metal Oxide Interfaces

2018 ◽  
Vol 6 (5) ◽  
pp. 1701203 ◽  
Author(s):  
Robert Godin ◽  
Xuerui Ma ◽  
Soranyel González-Carrero ◽  
Tian Du ◽  
Xiaoe Li ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Metal Oxide ◽  
Surface Passivation ◽  
Carrier Dynamics ◽  
Oxide Interfaces ◽  
Charge Carrier Dynamics ◽  
Halide Perovskites ◽  
Organolead Halide ◽  
Capping Ligands

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.

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

How Charge Carrier Dynamics are Affected by Light Soaking in (Mixed) Halide Perovskites

2018 ◽  
Author(s):  
Tom Savenije ◽  
Dengyang Guo ◽  
Roberto Brenes ◽  
Zahra Andaji Garmaroudi ◽  
Eline Hutter ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Halide Perovskites

scholarly journals Charge‐Carrier Dynamics, Mobilities, and Diffusion Lengths of 2D–3D Hybrid Butylammonium–Cesium–Formamidinium Lead Halide Perovskites

2019 ◽  
Vol 29 (35) ◽  
pp. 1902656 ◽  
Author(s):  
Leonardo R. V. Buizza ◽  
Timothy W. Crothers ◽  
Zhiping Wang ◽  
Jay B. Patel ◽  
Rebecca L. Milot ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Halide Perovskites ◽  
And Diffusion ◽  
Lead Halide

scholarly journals Charge-carrier dynamics in vapour-deposited films of the organolead halide perovskite CH3NH3PbI3−xClx

2014 ◽  
Vol 7 (7) ◽  
pp. 2269-2275 ◽  
Author(s):  
Christian Wehrenfennig ◽  
Mingzhen Liu ◽  
Henry J. Snaith ◽  
Michael B. Johnston ◽  
Laura M. Herz
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Heterojunction Solar Cells ◽  
Charge Carrier Dynamics ◽  
Dual Source ◽  
Planar Heterojunction Solar Cells ◽  
Organolead Halide ◽  
Planar Heterojunction ◽  
Recombination Lifetimes ◽  
Deposited Films

High charge-carrier mobilities and recombination lifetimes are revealed for CH3NH3PbI3−xClxfilms made by dual-source evaporation. Extracted diffusion lengths approach 3 microns, underlining the high suitability of the evaporated perovskite for planar-heterojunction solar cells.

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