scholarly journals Ultrafast charge transfer in solid-state films of pristine cyanine borate and blends with fullerene

2015 ◽  
Vol 3 (20) ◽  
pp. 10935-10941 ◽  
Author(s):  
Jelissa De Jonghe-Risse ◽  
Jakob Heier ◽  
Frank Nüesch ◽  
Jacques-E. Moser
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Separation ◽  
Ion Pair ◽  
Acceptor Concentration ◽  
Ultrafast Charge Transfer

Kinetic competition between charge separation and intra-ion pair reductive quenching depends on the acceptor concentration and phase intermixing morphology.

scholarly journals Long-lived charge separation following pump-wavelength–dependent ultrafast charge transfer in graphene/WS2 heterostructures

2021 ◽  
Vol 7 (9) ◽  
pp. eabd9061
Author(s):  
Shuai Fu ◽  
Indy du Fossé ◽  
Xiaoyu Jia ◽  
Jingyin Xu ◽  
Xiaoqing Yu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Separation ◽  
Transient Absorption ◽  
Transition Metal Dichalcogenides ◽  
Thermionic Emission ◽  
Great Promise ◽  
Metal Dichalcogenides ◽  
Ultrafast Charge Transfer ◽  
Device Operation ◽  
Interfacial Charge

Van der Waals heterostructures consisting of graphene and transition metal dichalcogenides have shown great promise for optoelectronic applications. However, an in-depth understanding of the critical processes for device operation, namely, interfacial charge transfer (CT) and recombination, has so far remained elusive. Here, we investigate these processes in graphene-WS2 heterostructures by complementarily probing the ultrafast terahertz photoconductivity in graphene and the transient absorption dynamics in WS2 following photoexcitation. We observe that separated charges in the heterostructure following CT live extremely long: beyond 1 ns, in contrast to ~1 ps charge separation reported in previous studies. This leads to efficient photogating of graphene. Furthermore, for the CT process across graphene-WS2 interfaces, we find that it occurs via photo-thermionic emission for sub-A-exciton excitations and direct hole transfer from WS2 to the valence band of graphene for above-A-exciton excitations. These findings provide insights to further optimize the performance of optoelectronic devices, in particular photodetection.

Photoinitiated multi-step charge separation and ultrafast charge transfer induced dissociation in a pyridyl-linked photosensitizer–cobaloxime assembly

2013 ◽  
Vol 6 (6) ◽  
pp. 1917 ◽  
Author(s):  
Brad S. Veldkamp ◽  
Won-Sik Han ◽  
Scott M. Dyar ◽  
Samuel W. Eaton ◽  
Mark A. Ratner ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Separation ◽  
Ultrafast Charge Transfer

scholarly journals Controlling charge separation in a novel donor–acceptor metal–organic framework via redox modulation

2014 ◽  
Vol 5 (12) ◽  
pp. 4724-4728 ◽  
Author(s):  
C. F. Leong ◽  
B. Chan ◽  
T. B. Faust ◽  
D. M. D'Alessandro
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Separation ◽  
Metal Organic Framework ◽  
Redox Modulation ◽  
Naphthalene Diimide ◽  
Computational Calculations ◽  
Donor Acceptor ◽  
Metal Organic ◽  
Organic Framework

Donor–acceptor charge transfer interactions in a tetrathiafulvalene–naphthalene diimide-based metal–organic framework (MOF) are interrogated using a complementary suite of solid state spectroscopic, electrochemical and spectroelectrochemical methods along with computational calculations.

scholarly journals Inducing Charge Separation in Solid-State Two-Dimensional Hybrid Perovskites through the Incorporation of Organic Charge-Transfer Complexes

2020 ◽  
Vol 11 (3) ◽  
pp. 824-830 ◽  
Author(s):  
María C. Gélvez-Rueda ◽  
Wouter T. M. Van Gompel ◽  
Roald Herckens ◽  
Laurence Lutsen ◽  
Dirk Vanderzande ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Separation ◽  
Charge Transfer Complexes ◽  
Two Dimensional

scholarly journals What Controls the Rate of Ultrafast Charge Transfer and Charge Separation Efficiency in Organic Photovoltaic Blends

2016 ◽  
Vol 138 (36) ◽  
pp. 11672-11679 ◽  
Author(s):  
Andreas C. Jakowetz ◽  
Marcus L. Böhm ◽  
Jiangbin Zhang ◽  
Aditya Sadhanala ◽  
Sven Huettner ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Organic Photovoltaic ◽  
Charge Separation Efficiency ◽  
Ultrafast Charge Transfer

scholarly journals Anion-enhanced excited state charge separation in a spiro-locked N-heterocycle-fused push-pull zinc porphyrin

2021 ◽  
Author(s):  
Mandeep K. Chahal ◽  
Anuradha Liyanage ◽  
Ajyal Z. Alsaleh ◽  
Paul A. Karr ◽  
Jonathan P. Hill ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Charge Separation ◽  
Charge Transfer Complex ◽  
Zinc Porphyrin ◽  
New Type ◽  
State Charge

A new type of push–pull charge transfer complex, viz., a spiro-locked N-heterocycle-fused zinc porphyrin, ZnP-SQ, is shown to undergo excited state charge separation, which is enhanced by axial F− binding to the Zn center.

Ultrafast charge transfer at the electrode−electrolyte interface via an artificial dielectric layer

2021 ◽  
Vol 494 ◽  
pp. 229710
Author(s):  
Takashi Teranishi ◽  
Kaisei Kozai ◽  
Sou Yasuhara ◽  
Shintaro Yasui ◽  
Naoyuki Ishida ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Dielectric Layer ◽  
Electrolyte Interface ◽  
Artificial Dielectric ◽  
Ultrafast Charge Transfer

Ultrafast Charge Transfer and Relaxation at a Donor–Acceptor Interface

2021 ◽  
Author(s):  
Fernando Rodríguez Díaz ◽  
Hong-Guang Duan ◽  
R. J. Dwayne Miller ◽  
Michael Thorwart
Keyword(s):  
Charge Transfer ◽  
Donor Acceptor ◽  
Ultrafast Charge Transfer

Solid-state redox couple mediated water splitting

2021 ◽  
Author(s):  
Duanduan Liu ◽  
Wei Wei ◽  
Maidina Mahemu ◽  
Hao Qin ◽  
Kai Zhu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Water Splitting ◽  
Redox Couple ◽  
Electrochemical Water Splitting

The solid-state redox couple is a vital charge transfer medium for electrochemical water splitting.

Sign in / Sign up

Export Citation Format

Share Document