Spin-flip processes of polarons by magnetic impurities in conjugated polymers

2009 ◽  
Vol 131 (15) ◽  
pp. 154901 ◽  
Author(s):  
Hui Zhao ◽  
Yu-Guang Chen ◽  
Yao Yao ◽  
Chang-Qin Wu ◽  
Xu-Ming Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Magnetic Impurities ◽  
Spin Flip

Erratum: “Spin-flip processes of polarons by magnetic impurities in conjugated polymers” [J. Chem. Phys. 131, 154901 (2009)]

2013 ◽  
Vol 138 (2) ◽  
pp. 029902
Author(s):  
Hui Zhao ◽  
Yu-Guang Chen ◽  
Yao Yao ◽  
Chang-Qin Wu ◽  
Xu-Ming Zhang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Chem Phys ◽  
Magnetic Impurities ◽  
Spin Flip

Spin-Flip Process of Polarons in Conjugated Polymers with Magnetic Impurities

2009 ◽  
Vol 26 (8) ◽  
pp. 087203 ◽  
Author(s):  
Zhao Hui ◽  
Zhang Xu-Ming ◽  
An Zhong ◽  
Chen Yu-Guang ◽  
Wu Chang-Qin
Keyword(s):  
Conjugated Polymers ◽  
Magnetic Impurities ◽  
Spin Flip

Improvement of singlet exciton induced by spin flip in conjugated polymers

2018 ◽  
Vol 59 ◽  
pp. 56-62 ◽  
Author(s):  
Ruixuan Meng ◽  
Xiaolei Ma ◽  
Sun Yin ◽  
Shijie Xie
Keyword(s):  
Conjugated Polymers ◽  
Singlet Exciton ◽  
Spin Flip

TRANSITION OF BIPOLARON TO POLARONS INDUCED BY MAGNETIC IMPURITIES IN CONJUGATED POLYMERS

2011 ◽  
Vol 25 (12) ◽  
pp. 1601-1610
Author(s):  
X. J. LIU ◽  
Z. AN ◽  
S. J. XIE
Keyword(s):  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
Dynamic Method ◽  
Optoelectronic Devices ◽  
Charge Carriers ◽  
Composite Particles ◽  
Magnetic Impurities ◽  
Internal Structures ◽  
Spin Polarized ◽  
Pass Through

Both polarons and bipolarons are composite particles with internal structures in nondegenerate conjugated polymers. A bipolaron is a spinless species with charge ±2|e|, while a polaron is a spin-bearing one (spin 1/2, charge ±|e|). Serving as charge carriers, they play an important role in the transport properties of polymer-based optoelectronic devices. By using a nonadiabatic dynamic method, the motion of a bipolaron under an external electric field is theoretically investigated in a conjugated polymer with magnetic impurities. Our results show that a bipolaron can pass through the magnetic impurities, or break down into two polarons with different spins, or be trapped by the magnetic impurities, depending on the width of the impurity region. When the width of the impurity region is comparable to the polaron width, the bipolaron is transformed into two polarons easily. As a polaron and a bipolaron possess different spin characteristics, the decomposition of bipolarons induced by the magnetic impurities may have important effect on the spin polarized transportation.

Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

1996 ◽  
Vol 54 ◽  
pp. 160-161
Author(s):  
J. Fink
Keyword(s):  
Electronic Structure ◽  
Conducting Polymers ◽  
Conjugated Polymers ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Light Emitting ◽  
One Dimensional ◽  
New Class ◽  
Electrical Conductivities ◽  
Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

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