scholarly journals Insights from Transient Absorption Spectroscopy into Electron Dynamics Along the Ga‐Gradient in Cu(In,Ga)Se 2 Solar Cells

2021 ◽  
Vol 11 (8) ◽  
pp. 2003446
Author(s):  
Yu‐Han Chang ◽  
Romain Carron ◽  
Mario Ochoa ◽  
Carlota Bozal‐Ginesta ◽  
Ayodhya N. Tiwari ◽  
...  
Keyword(s):  
Solar Cells ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Electron Dynamics

scholarly journals Analytical Theory of Attosecond Transient Absorption Spectroscopy of Perturbatively Dressed Systems

2019 ◽  
Vol 9 (7) ◽  
pp. 1350
Author(s):  
Daria Kolbasova ◽  
Robin Santra
Keyword(s):  
Perturbation Theory ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Electronic States ◽  
Theoretical Description ◽  
Transient Absorption Spectroscopy ◽  
Electron Dynamics ◽  
Optical Pulses ◽  
Absorption Signal ◽  
Level Model

A theoretical description of attosecond transient absorption spectroscopy for temporally and spatially overlapping XUV and optical pulses is developed, explaining the signals one can obtain in such an experiment. To this end, we employ a two-stage approach based on perturbation theory, which allows us to give an analytical expression for the transient absorption signal. We focus on the situation in which the attosecond XUV pulse is used to create a coherent superposition of electronic states. As we explain, the resulting dynamics can be detected in the spectrum of the transmitted XUV pulse by manipulating the electronic wave packet using a carrier-envelope-phase-stabilized optical dressing pulse. In addition to coherent electron dynamics triggered by the attosecond pulse, the transmitted XUV spectrum encodes information on electronic states made accessible by the optical dressing pulse. We illustrate these concepts through calculations performed for a few-level model.

scholarly journals Attosecond transient absorption spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy

2020 ◽  
Vol 22 (5) ◽  
pp. 2704-2712 ◽  
Author(s):  
Taran Driver ◽  
Siqi Li ◽  
Elio G. Champenois ◽  
Joseph Duris ◽  
Daniel Ratner ◽  
...  
Keyword(s):  
High Resolution ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Electron Dynamics ◽  
Ghost Imaging ◽  
X Ray ◽  
Imaging Approach ◽  
Ultrafast Electron Dynamics

Recently demonstrated isolated attosecond XFEL pulses should allow the probing of ultrafast electron dynamics at X-ray wavelengths. The authors use ghost imaging to enable high-resolution transient absorption spectroscopy at fluctuating XFEL sources.

scholarly journals Identification of different pathways of electron injection in dye-sensitised solar cells of electrodeposited ZnO using an indoline sensitiser

2016 ◽  
Vol 18 (13) ◽  
pp. 8938-8944 ◽  
Author(s):  
Iulia Minda ◽  
Essraa Ahmed ◽  
Vivien Sleziona ◽  
Christoph Richter ◽  
Max Beu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Electron Injection ◽  
Transient Absorption Spectroscopy ◽  
Ultrafast Transient Absorption ◽  
Charge Transfer Dynamics ◽  
Ultrafast Transient Absorption Spectroscopy

Charge transfer dynamics in fully operational dye sensitised solar cells as observed using ultrafast transient absorption spectroscopy.

Direct monitoring of ultrafast electron and hole dynamics in perovskite solar cells

2015 ◽  
Vol 17 (22) ◽  
pp. 14674-14684 ◽  
Author(s):  
Piotr Piatkowski ◽  
Boiko Cohen ◽  
Francisco Javier Ramos ◽  
Maria Di Nunzio ◽  
Mohammad Khaja Nazeeruddin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Perovskite Solar Cells ◽  
Transient Absorption Spectroscopy ◽  
Trap States ◽  
Surface Trap

Electron and hole dynamics, and internal and surface trap states in perovskite-based solar cells are explored by fs transient absorption spectroscopy.

Electron Dynamics in Nanocrystalline ZnO and TiO2Films Probed by Potential Step Chronoamperometry and Transient Absorption Spectroscopy

2002 ◽  
Vol 106 (31) ◽  
pp. 7605-7613 ◽  
Author(s):  
Richard L. Willis ◽  
Carol Olson ◽  
Brian O'Regan ◽  
Thierry Lutz ◽  
Jenny Nelson ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Electron Dynamics ◽  
Potential Step
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