Hot carrier dynamics and phonon anharmonicity of ZrTe5 revealed with femtosecond transient optical spectroscopy

2020 ◽  
Vol 101 (1) ◽  
Author(s):  
Ning Li ◽  
Weizheng Liang ◽  
Sheng-Nian Luo
Keyword(s):  
Optical Spectroscopy ◽  
Carrier Dynamics ◽  
Hot Carrier

scholarly journals Effects of Crystal Morphology on the Hot-Carrier Dynamics in Mixed-Cation Hybrid Lead Halide Perovskites

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 708
Author(s):  
Daniele Catone ◽  
Giuseppe Ammirati ◽  
Patrick O’Keeffe ◽  
Faustino Martelli ◽  
Lorenzo Di Mario ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Carrier Dynamics ◽  
Large Area ◽  
Photovoltaic Properties ◽  
Time Resolved ◽  
Hot Carrier ◽  
Mixed Cation ◽  
Small Crystals ◽  
Characterization Of Materials ◽  
Lead Halide

Ultrafast pump-probe spectroscopies have proved to be an important tool for the investigation of charge carriers dynamics in perovskite materials providing crucial information on the dynamics of the excited carriers, and fundamental in the development of new devices with tailored photovoltaic properties. Fast transient absorbance spectroscopy on mixed-cation hybrid lead halide perovskite samples was used to investigate how the dimensions and the morphology of the perovskite crystals embedded in the capping (large crystals) and mesoporous (small crystals) layers affect the hot-carrier dynamics in the first hundreds of femtoseconds as a function of the excitation energy. The comparative study between samples with perovskite deposited on substrates with and without the mesoporous layer has shown how the small crystals preserve the temperature of the carriers for a longer period after the excitation than the large crystals. This study showed how the high sensitivity of the time-resolved spectroscopies in discriminating the transient response due to the different morphology of the crystals embedded in the layers of the same sample can be applied in the general characterization of materials to be used in solar cell devices and large area modules, providing further and valuable information for the optimization and enhancement of stability and efficiency in the power conversion of new perovskite-based devices.

Hot Carrier Dynamics and Charge Trapping in Surface Passivated β-CsPbI3 Inorganic Perovskite

2021 ◽  
pp. 6907-6913
Author(s):  
Xian Wang ◽  
Dayujia Huo ◽  
Xin Wang ◽  
Minjie Li ◽  
Yong Wang ◽  
...  
Keyword(s):  
Charge Trapping ◽  
Carrier Dynamics ◽  
Inorganic Perovskite ◽  
Hot Carrier

Hot carrier dynamics in GaAs epilayer structures grown on Si

1992 ◽  
Vol 7 (3B) ◽  
pp. B195-B198
Author(s):  
Kai Shum ◽  
Y Takiguchi ◽  
J M Mohaidat ◽  
R R Alfano ◽  
K Adomi ◽  
...  
Keyword(s):  
Carrier Dynamics ◽  
Hot Carrier

Hot Carrier Dynamics and Carrier-Phonon Interaction in GaN

2005 ◽  
Vol 47 (92) ◽  
pp. 356 ◽  
Author(s):  
Kyhm K. ◽  
Taylor R.A. ◽  
Cain N.J.
Keyword(s):  
Carrier Dynamics ◽  
Phonon Interaction ◽  
Hot Carrier

One-step vapour phase growth of two-dimensional formamidinium-based perovskite and its hot carrier dynamics

2020 ◽  
Vol 22 (37) ◽  
pp. 21512-21519
Author(s):  
Ufuk Erkılıç ◽  
Hyun Goo Ji ◽  
Eiji Nishibori ◽  
Hiroki Ago
Keyword(s):  
Vapour Deposition ◽  
Vapour Phase ◽  
Carrier Dynamics ◽  
Two Dimensional ◽  
Deposition Method ◽  
Phase Growth ◽  
Hot Carrier ◽  
One Step

Square-shaped layered FA2PbI4 perovskite crystals were prepared using a one-step vapour deposition method, and the hot carrier dynamics of these crystals was studied.

Hot-carrier dynamics in type-II semiconductor quantum wells (Conference Presentation)

2018 ◽  
Author(s):  
Alan D. Bristow ◽  
Herath P. Piyathilaka ◽  
Hamidreza M. Esmaielpour ◽  
Vincent R. Whiteside ◽  
Michael B. Santos ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Carrier Dynamics ◽  
Type Ii ◽  
Hot Carrier ◽  
Semiconductor Quantum Wells

scholarly journals Carrier dynamics investigated by time resolved optical spectroscopy

2002 ◽  
Vol 32 (2a) ◽  
pp. 353-355
Author(s):  
Saúl J. Luyo ◽  
Maria S.P. Brasil ◽  
Hugo B. de Carvalho ◽  
Wilson de Carvalho Jr. ◽  
Ayrton A. Bernussi
Keyword(s):  
Optical Spectroscopy ◽  
Carrier Dynamics ◽  
Time Resolved

scholarly journals Probing charge transfer and hot carrier dynamics in organic solar cells with terahertz spectroscopy

2016 ◽  
Author(s):  
Paul D. Cunningham ◽  
Paul A. Lane ◽  
Joseph S. Melinger ◽  
Okan Esenturk ◽  
Edwin J. Heilweil
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
Terahertz Spectroscopy ◽  
Carrier Dynamics ◽  
Hot Carrier
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