Mixing of Frenkel and charge transfer excitons in quasi-one-dimensional copper phthalocyanine molecular crystals

2004 ◽  
Vol 69 (16) ◽  
Author(s):  
M. Knupfer ◽  
T. Schwieger ◽  
H. Peisert ◽  
J. Fink
Keyword(s):  
Charge Transfer ◽  
Copper Phthalocyanine ◽  
Molecular Crystals ◽  
One Dimensional ◽  
Charge Transfer Excitons

scholarly journals Lowest energy Frenkel and charge transfer exciton intermixing in one-dimensional copper phthalocyanine molecular lattice

2016 ◽  
Vol 109 (21) ◽  
pp. 213302 ◽  
Author(s):  
I. V. Bondarev ◽  
A. Popescu ◽  
R. A. Younts ◽  
B. Hoffman ◽  
T. McAfee ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Copper Phthalocyanine ◽  
One Dimensional

EXCITONS IN QUASI-ONE-DIMENSIONAL CRYSTALLINE PERYLENE DERIVATIVES: BAND STRUCTURE AND RELAXATION DYNAMICS

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3597-3600
Author(s):  
M. HOFFMANN ◽  
T. HASCHE ◽  
K. SCHMIDT ◽  
T. W. CANZLER ◽  
V. M. AGRANOVICH ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Band Structure ◽  
Quantum Chemical ◽  
Relaxation Dynamics ◽  
Charge Transfer Transition ◽  
Transition Dipole ◽  
One Dimensional ◽  
Perylene Derivatives ◽  
Charge Transfer Excitons ◽  
Fitting Parameters

The exciton structure of crystalline MePTCDI (N-N'-dimethylperylene-3,4,9,10-dicarboximide) is modeled by a one-dimensional Hamiltonian, which includes the interactions between Frenkel excitons with several vibronic levels and charge-transfer excitons. Using appropriate fitting parameters, which are verified by quantum chemical calculations, this model can explain the main features of the low temperature absorption spectrum. Polarized absorption spectra show different polarization ratios for the various peaks. This polarization behavior is explained by the varying contribution of the charge-transfer transition dipole, which has a direction different from the Frenkel transition dipole. Our model for the exciton band structure is supported by transient emission measurements.

scholarly journals Charge-transfer biexciton annihilation in a donor–acceptor co-crystal yields high-energy long-lived charge carriers

2020 ◽  
Vol 11 (35) ◽  
pp. 9532-9541
Author(s):  
Itai Schlesinger ◽  
Natalia E. Powers-Riggs ◽  
Jenna L. Logsdon ◽  
Yue Qi ◽  
Stephen A. Miller ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transient Absorption ◽  
High Energy ◽  
Charge Carriers ◽  
One Dimensional ◽  
Femtosecond Transient Absorption ◽  
Donor Acceptor ◽  
Charge Transfer Excitons

Femtosecond transient absorption microscopy of donor–acceptor single co-crystals shows that photogenerated charge transfer excitons in one-dimensional donor–acceptor π stacks annihilate to produce high-energy, long-lived electrons and holes.

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