scholarly journals Study of the Bulk Charge Carrier Dynamics in Anatase and Rutile TiO2 Single Crystals by Femtosecond Time-Resolved Spectroscopy

2018 ◽  
Vol 122 (16) ◽  
pp. 8925-8932 ◽  
Author(s):  
Partha Maity ◽  
Omar F. Mohammed ◽  
Khabiboulakh Katsiev ◽  
Hicham Idriss
Keyword(s):  
Charge Carrier ◽  
Single Crystals ◽  
Carrier Dynamics ◽  
Time Resolved ◽  
Rutile Tio2 ◽  
Time Resolved Spectroscopy ◽  
Charge Carrier Dynamics ◽  
Bulk Charge

Time-Resolved Observations of Photo-Generated Charge-Carrier Dynamics in Sb2Se3 Photocathodes for Photoelectrochemical Water Splitting

ACS Nano ◽  
2018 ◽  
Vol 12 (11) ◽  
pp. 11088-11097 ◽  
Author(s):  
Wooseok Yang ◽  
Seungmin Lee ◽  
Hyeok-Chan Kwon ◽  
Jeiwan Tan ◽  
Hyungsoo Lee ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Splitting ◽  
Carrier Dynamics ◽  
Photoelectrochemical Water Splitting ◽  
Time Resolved ◽  
Charge Carrier Dynamics

scholarly journals Real-time probing of charge-transfer induced interfacial fields in a dye-semiconductor system using time-resolved XPS

2019 ◽  
Vol 205 ◽  
pp. 05021
Author(s):  
Johannes Mahl ◽  
Stefan Neppl ◽  
Friedrich Roth ◽  
Andrey Shavorskiy ◽  
Nils Huse ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Carrier ◽  
Photoelectron Spectroscopy ◽  
Carrier Dynamics ◽  
Time Resolved ◽  
X Ray ◽  
Charge Carrier Dynamics ◽  
Semiconductor System ◽  
Induced Charge ◽  
Polypyridine Complexes

Photo-induced charge carrier dynamics and transient interfacial fields at the interface between N3 polypyridine complexes and films of nanocrystalline ZnO are probed by picosecond time-resolved X-ray photoelectron spectroscopy.

scholarly journals Carbon Nanotube Photophysics

MRS Bulletin ◽  
2004 ◽  
Vol 29 (4) ◽  
pp. 276-280 ◽  
Author(s):  
A. Jorio ◽  
R. Saito ◽  
T. Hertel ◽  
R.B. Weisman ◽  
G. Dresselhaus ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Optical Measurements ◽  
Future Research ◽  
Time Resolved ◽  
Van Hove Singularities ◽  
Charge Carrier Dynamics ◽  
Potential Applications ◽  
Photoluminescence Studies

AbstractIn single-walled carbon nanotubes (SWNTs), their electronic and vibrational structure as well as their charge-carrier dynamics are crucial for potential ultrasmall optical device applications. SWNT properties have now been obtained from optical absorption and time-resolved photoemission and, at the single-nanotube level, by resonance Raman scattering and photoluminescence studies. This article presents an overview of SWNT photophysics, discussing important findings for the characterization of carbon nanotube properties and directions for future research and potential applications. The unique optical properties observed in SWNTs are due to the one-dimensional confinement of electronic states, resulting in van Hove singularities in the nanotube density of states. Optical measurements of phonons, charge-carrier dynamics, and the electronic transition energy van Hove singularities are discussed.

Charge carrier dynamics in small-molecule- and polymer-based donor-acceptor blends

2014 ◽  
Vol 1733 ◽  
Author(s):  
Keshab Paudel ◽  
Brian Johnson ◽  
Mattson Thieme ◽  
John E. Anthony ◽  
Oksana Ostroverkhova
Keyword(s):  
Optical Absorption ◽  
Charge Carrier ◽  
High Performance ◽  
Continuous Wave ◽  
Carrier Dynamics ◽  
Bulk Heterojunctions ◽  
Time Resolved ◽  
Charge Carrier Dynamics ◽  
Donor Acceptor ◽  
532 Nm

ABSTRACTWe present a comparative study of optical absorption, photoluminescence (PL), and photoconductivity in bulk heterojunctions comprising a high performance functionalized anthradithiophene (ADT) derivative or the benchmark polymer P3HT as donor and functionalized pentacene (Pn) derivative or PCBM as acceptor. Of all D/A blends studied, the ADT/PCBM blend exhibited the highest charge photogeneration efficiencies under 532 nm excitation, leading to the highest amplitudes of time-resolved and continuous wave (cw) photocurrents. At nanosecond time scales after photoexcitation, both ADT-TES-F-based blends and the P3HT/Pn-TIPS-F8 blend exhibited photocurrents which were higher by a factor of 2-10, depending on the blend, than that in the P3HT/PCBM blend. However, cw photocurrents showed a different trend, with the ADT-TES-F/PCBM blend exhibiting only a factor of ∼2.5 higher photoresponse than that in the P3HT/PCBM blends, and the ADT-TES-F- and P3HT- based blends with Pn-TIPS-F8 showing a factor of ∼1.5-2.5 lower photoresponse than that in the P3HT/PCBM blend, due to other contributions, such as that of charge trap-limited transport, to cw photoresponse.

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