Probing Exciton Transport in Squaraine Polymers Using Fifth-Order Two-Dimensional Spectroscopy

2020 ◽  
Author(s):  
Julian Lüttig ◽  
Pavel Malý ◽  
Arthur Turkin ◽  
Katja Mayershofer ◽  
Simon Büttner ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Exciton Transport ◽  
Fifth Order

scholarly journals Efficient Interlayer Exciton Transport in Two-Dimensional Metal-Halide Perovskites.

2020 ◽  
Author(s):  
Alvaro J Magdaleno ◽  
Michael Seitz ◽  
Michel Frising ◽  
Ana Herranz de la Cruz ◽  
Antonio I. Fernández-Domínguez ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Carrier ◽  
Carrier Transport ◽  
Energy Transport ◽  
Diffusion Length ◽  
Charge Carrier Transport ◽  
Two Dimensional ◽  
Exciton Transport ◽  
Halide Perovskites ◽  
Excitonic Energy

We present transient microscopy measurements of interlayer energy transport in (PEA)<sub>2</sub>PbI<sub>4</sub> perovskite. We find efficient interlayer exciton transport (0.06 cm<sup>2</sup>/s), which translates into a diffusion length that exceeds 100 nm and a sub-ps timescale for energy transfer. While still slower than in-plane exciton transport (0.2 cm<sup>2</sup>/s), our results show that excitonic energy transport is considerably less anisotropic than charge-carrier transport for 2D perovskites.

Two-dimensional fifth-order Raman spectroscopy of liquid formamide: Experiment and Theory

2008 ◽  
Vol 128 (23) ◽  
pp. 234507 ◽  
Author(s):  
Y. L. Li ◽  
L. Huang ◽  
R. J. Dwayne Miller ◽  
Taisuke Hasegawa ◽  
Yoshitaka Tanimura
Keyword(s):  
Raman Spectroscopy ◽  
Two Dimensional ◽  
Fifth Order

Fifth-order two-dimensional Raman spectra of CS2 are dominated by third-order cascades

1999 ◽  
Vol 111 (7) ◽  
pp. 3105-3114 ◽  
Author(s):  
David A. Blank ◽  
Laura J. Kaufman ◽  
Graham R. Fleming
Keyword(s):  
Raman Spectra ◽  
Two Dimensional ◽  
Third Order ◽  
Fifth Order

Suppression of shock-induced separation in fluids having large bulk viscosities

2014 ◽  
Vol 756 ◽  
Author(s):  
F. Bahmani ◽  
M. S. Cramer
Keyword(s):  
Boundary Layer ◽  
Bulk Viscosity ◽  
Shear Viscosity ◽  
Classical Problem ◽  
Two Dimensional ◽  
Perfect Gas ◽  
Third Order ◽  
Large Bulk ◽  
Boundary Layer Interaction ◽  
Fifth Order

AbstractWe examine the effect of large bulk viscosity on the classical problem of two-dimensional shock–boundary-layer interaction. The flow is taken to be steady and supersonic over a flat adiabatic plate. The boundary layer is taken to be laminar and the fluid is modelled as a perfect gas with a bulk viscosity that is large compared with its shear viscosity. The flow details are computed using a fifth-order weighted essentially non-oscillatory finite difference scheme and a third-order Runge–Kutta scheme for the spatial and temporal discretizations. The primary result of interest is the suppression of separation when the ratio of bulk to shear viscosity is sufficiently large.

scholarly journals Efficient Interlayer Exciton Transport in Two-Dimensional Metal-Halide Perovskites.

2020 ◽  
Author(s):  
Alvaro J Magdaleno ◽  
Michael Seitz ◽  
Michel Frising ◽  
Ana Herranz de la Cruz ◽  
Antonio I. Fernández-Domínguez ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Charge Carrier ◽  
Carrier Transport ◽  
Energy Transport ◽  
Diffusion Length ◽  
Charge Carrier Transport ◽  
Two Dimensional ◽  
Exciton Transport ◽  
Halide Perovskites ◽  
Excitonic Energy

We present transient microscopy measurements of interlayer energy transport in (PEA)<sub>2</sub>PbI<sub>4</sub> perovskite. We find efficient interlayer exciton transport (0.06 cm<sup>2</sup>/s), which translates into a diffusion length that exceeds 100 nm and a sub-ps timescale for energy transfer. While still slower than in-plane exciton transport (0.2 cm<sup>2</sup>/s), our results show that excitonic energy transport is considerably less anisotropic than charge-carrier transport for 2D perovskites.

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