Effects of Hydrogen Treatment and Air Annealing on Ultrafast Charge Carrier Dynamics in ZnO Nanowires Under in Situ Photoelectrochemical Conditions

2012 ◽  
Vol 116 (33) ◽  
pp. 17360-17368 ◽  
Author(s):  
Jason K. Cooper ◽  
Yichuan Ling ◽  
Claudia Longo ◽  
Yat Li ◽  
Jin Z. Zhang
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Zno Nanowires ◽  
Hydrogen Treatment ◽  
Charge Carrier Dynamics

In-situ analysis of microwave conductivity and impedance spectroscopy for evaluation of charge carrier dynamics at interfaces

2017 ◽  
Vol 111 (20) ◽  
pp. 203302 ◽  
Author(s):  
Wookjin Choi ◽  
Junichi Inoue ◽  
Yusuke Tsutsui ◽  
Tsuneaki Sakurai ◽  
Shu Seki
Keyword(s):  
Impedance Spectroscopy ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
In Situ Analysis ◽  
Microwave Conductivity ◽  
Charge Carrier Dynamics

scholarly journals Tailoring the charge carrier dynamics in ZnO nanowires: the role of surface hole/electron traps

2012 ◽  
Vol 14 (9) ◽  
pp. 3075 ◽  
Author(s):  
Mingjie Li ◽  
Guichuan Xing ◽  
Lloyd Foong Nien Ah Qune ◽  
Guozhong Xing ◽  
Tom Wu ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Zno Nanowires ◽  
Electron Traps ◽  
Charge Carrier Dynamics

Structural and ultrafast charge carrier dynamics of in-situ synthesized rGO/Fe3O4 nanocomposite

2016 ◽  
Vol 181 ◽  
pp. 99-102 ◽  
Author(s):  
Pooja Devi ◽  
Praveen Kumar ◽  
Chhavi Sharma ◽  
Chhavi Sharma ◽  
Mahesh Kumar ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics

Investigation of charge carrier dynamics in positive lithium-ion battery electrodes via optical in situ observation

2021 ◽  
Vol 482 ◽  
pp. 228943 ◽  
Author(s):  
Florian Rittweger ◽  
Christian Modrzynski ◽  
Valentin Roscher ◽  
Dmitry L. Danilov ◽  
Peter H.L. Notten ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
Carrier Dynamics ◽  
In Situ Observation ◽  
Charge Carrier Dynamics

Ultrafast Charge Carrier Dynamics in Extremely Thin Absorber (ETA) Solar Cells Consisting of CdSe-Coated ZnO Nanowires

2016 ◽  
Vol 120 (35) ◽  
pp. 19504-19512 ◽  
Author(s):  
Michael E. Edley ◽  
Siming Li ◽  
Glenn W. Guglietta ◽  
Hasti Majidi ◽  
Jason B. Baxter
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Zno Nanowires ◽  
Charge Carrier Dynamics ◽  
Extremely Thin Absorber

scholarly journals In situ monitoring of the charge carrier dynamics of CH3NH3PbI3 perovskite crystallization process

2019 ◽  
Vol 7 (39) ◽  
pp. 12170-12179 ◽  
Author(s):  
Efthymis Serpetzoglou ◽  
Ioannis Konidakis ◽  
Temur Maksudov ◽  
Apostolos Panagiotopoulos ◽  
Emmanuel Kymakis ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Crystallization Process ◽  
Carrier Dynamics ◽  
In Situ Monitoring ◽  
Charge Carrier Dynamics ◽  
Recombination Processes ◽  
Charge Extraction ◽  
Scientific Attention

Although CH3NH3PbI3 perovskite has attracted enormous scientific attention over the last decade or so, important information on the charge extraction dynamics and recombination processes in perovskite devices is still missing.

Ultrafast Charge Carrier Dynamics and Photoelectrochemical Properties of Hydrogen-treated TiO2 Nanowire Arrays

2012 ◽  
Vol 1387 ◽  
Author(s):  
Damon A. Wheeler ◽  
Gongming Wang ◽  
Bob C. Fitzmorris ◽  
Staci A. Adams ◽  
Yat Li ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Nanowire Arrays ◽  
Transient Absorption Spectroscopy ◽  
Hydrogen Treatment ◽  
Photoelectrochemical Properties ◽  
Relaxation Dynamics ◽  
Fast Decay ◽  
Charge Carrier Dynamics

ABSTRACTHere we report studies of photoelectrochemical (PEC) properties and ultrafast charge carrier relaxation dynamics of hydrogen-treated TiO2 (H:TiO2) nanowire arrays. PEC measurements showed the photocurrent density of the H:TiO2 was approximately double that of TiO2, attributed to increased donor density due to the formation of oxygen vacancies in H:TiO2 due to hydrogen treatment Charge carrier dynamics of H:TiO2, measured using fs transient absorption spectroscopy, showed a fast decay of ∼20 ps followed by slower decay persisting to tens of picoseconds. The fast decay is attributed to bandedge electron-hole recombination and the slower decay is attributed to recombination from trap states. Visible absorption is attributed to either electronic transitions from the valence band to oxygen vacancy states or from oxygen vacancy states to the conduction band of the TiO2, which is supported by incident photon to current conversion efficiency (IPCE) data. H:TiO2 represents a unique material with improved photoelectrochemical properties for applications including PEC water splitting, solar cells, and photocatalysis.

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