An Overview of Conjugated Polymers in their Insulating Forms

1992 ◽  
Vol 247 ◽  
Author(s):  
Daniel J. Sandman

ABSTRACTA brief overview is presented of the electrical and linear optical properties of conjugated polymers in their electrically insulating forms. Topics discussed include electronic structure and optical spectroscopy, thermochromism, and device applications, particularly electroluminescence. Structure-property relationships are stressed. Particular emphasis is placed on the properties of polydiacetylenes as they are available as macroscopic single crystals and, hence, are the best defined class of conjugated polymers.

2020 ◽  
Vol 126 (3) ◽  
Author(s):  
Mukhtar Hussain ◽  
Hugo Pires ◽  
Willem Boutu ◽  
Dominik Franz ◽  
Rana Nicolas ◽  
...  

CrystEngComm ◽  
2019 ◽  
Vol 21 (8) ◽  
pp. 1309-1319 ◽  
Author(s):  
Dina V. Deyneko ◽  
Daria A. Petrova ◽  
Sergey M. Aksenov ◽  
Sergey Yu. Stefanovich ◽  
Oksana V. Baryshnikova ◽  
...  

Crystal structure, thermal, ionic conductivity of large cations (Ca and Pb), dielectric and non-linear optical properties were investigated for Ca10.5−xPbx(VO4)7 single crystals (x = 1.9, 3.5, 4.9).


2011 ◽  
Vol 22 (03) ◽  
pp. 263-269
Author(s):  
XIAOLI ZHANG ◽  
GUOREN ZHANG ◽  
TING JIA ◽  
YING GUO ◽  
ZHI ZENG

The electronic structure and linear optical properties of luminescent material EuKNaTaO5 are investigated by employing full-potential linear augmented plane wave method. Our results show highly localized Eu 4f states which pinned in the energy range below the unoccupied Ta 5d states and over the occupied O 2p states. The optical spectra are analyzed and interpreted in terms of the electronic structure. It is found that Eu ions absorb the major parts of the incident energy below 3.3 eV. This is in accordance with the experimental result that EuKNaTaO5 phosphor is efficient under the excitation of 535 nm (2.3 eV) visible part of the spectrum. The linear optical properties are found to be anisotropic.


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