Long-Lived, Mobile Charge Carriers Formed on Photoexcitation of UV-Polymerized, Spin-Coated Films of Arylimido−Spacer−Diacetylene Derivatives

2000 ◽  
Vol 33 (1) ◽  
pp. 60-66 ◽  
Author(s):  
Tom J. Savenije ◽  
John M. Warman ◽  
Helma M. Barentsen ◽  
Marinus van Dijk ◽  
Han Zuilhof ◽  
...  
Keyword(s):  
Charge Carriers ◽  
Mobile Charge

Low temperature frequency dependence of the electron spin resonance absorption in heavily phosphorus-doped silicon

1970 ◽  
Vol 48 (24) ◽  
pp. 2930-2936 ◽  
Author(s):  
F. T. Hedgcock ◽  
T. W. Raudorf
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Magnetic Moments ◽  
Charge Carriers ◽  
Mobile Charge ◽  
Local Moments ◽  
Spin Resonance ◽  
Doped Silicon ◽  
Pauli Paramagnetism ◽  
Phosphorus Doped

Electron spin resonance (ESR) measurements have been made on a phosphorus-doped silicon specimen (n = 1.38 × 1019/cc) in the liquid helium temperature range. A single line with a g factor of approximately 2 was observed for resonant magnetic fields of 540, 3230, and 12 590 G at 1517, 9010, and 35 200 MHz respectively. The experimentally determined magnetization is compared with the magnetizations expected from the following sources: (a) un-ionized charge carriers or local magnetic moments obeying a Curie law, (b) mobile carriers experiencing an exchange interaction with local magnetic moments, and (c) mobile charge carriers showing only Pauli paramagnetism. The magnetization derived from the ESR data exhibits a linear dependence with magnetic field and no temperature dependence. This is consistent with the Pauli paramagnetism expected for mobile charge carriers in the absence of any interaction with local moments.

scholarly journals Molecular Doping in Multi-Molecule Polymer-Dopant Complexes Shows Reduced Coulomb Binding

2020 ◽  
Author(s):  
Chuanding Dong ◽  
Stefan Schumacher
Keyword(s):  
Charge Transfer ◽  
Organic Semiconductors ◽  
Positive Charge ◽  
Charge Carriers ◽  
Mechanistic Study ◽  
Charge Transfer Complexes ◽  
Mobile Charge ◽  
Molecular Doping ◽  
Gap States ◽  
P Type

<p>The mechanistic study of molecular doping of organic semiconductors (OSC) requires</p><p>an improved understanding of the role and formation of integer charge transfer complexes</p><p>(ICTC) on a microscopic level. In the present work we go one crucial step beyond</p><p>the simplest scenario of an isolated bi-molecular ICTC and study ICTCs formed of</p><p>up to two (poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b,3,4-b”]dithiophene)-alt-4,7-(2,1,3-</p><p>benzothiadiazole)](PCPDT-BT) oligomers and up to two CN6-CP molecules. We find that depending</p><p>on geometric arrangement, complexes containing two conjugated oligomers and two</p><p>dopant molecules can show p-type doping with double integer charge transfer, resulting in either</p><p>two singly doped oligomers or one doubly doped oligomer. Interestingly, compared to an individual</p><p>oligomer-dopant complex, the resulting in-gap states on the doped oligomers are significantly</p><p>lowered in energy. Indicating that, already in the relatively small systems studied here, Coulomb</p><p>binding of the doping-induced positive charge to the counter-ion is reduced which is an elemental</p><p>step towards generating mobile charge carriers through molecular doping.</p>

scholarly journals Molecular Doping in Multi-Molecule Polymer-Dopant Complexes Shows Reduced Coulomb Binding

2020 ◽  
Author(s):  
Chuanding Dong ◽  
Stefan Schumacher
Keyword(s):  
Charge Transfer ◽  
Organic Semiconductors ◽  
Positive Charge ◽  
Charge Carriers ◽  
Mechanistic Study ◽  
Charge Transfer Complexes ◽  
Mobile Charge ◽  
Molecular Doping ◽  
Gap States ◽  
P Type

<p>The mechanistic study of molecular doping of organic semiconductors (OSC) requires</p><p>an improved understanding of the role and formation of integer charge transfer complexes</p><p>(ICTC) on a microscopic level. In the present work we go one crucial step beyond</p><p>the simplest scenario of an isolated bi-molecular ICTC and study ICTCs formed of</p><p>up to two (poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b,3,4-b”]dithiophene)-alt-4,7-(2,1,3-</p><p>benzothiadiazole)](PCPDT-BT) oligomers and up to two CN6-CP molecules. We find that depending</p><p>on geometric arrangement, complexes containing two conjugated oligomers and two</p><p>dopant molecules can show p-type doping with double integer charge transfer, resulting in either</p><p>two singly doped oligomers or one doubly doped oligomer. Interestingly, compared to an individual</p><p>oligomer-dopant complex, the resulting in-gap states on the doped oligomers are significantly</p><p>lowered in energy. Indicating that, already in the relatively small systems studied here, Coulomb</p><p>binding of the doping-induced positive charge to the counter-ion is reduced which is an elemental</p><p>step towards generating mobile charge carriers through molecular doping.</p>

scholarly journals Highly Conductive Ceramics with Multiple Types of Mobile Charge Carriers

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1148
Author(s):  
Sebastian Wachowski ◽  
Gilles Gauthier ◽  
Jong-Sook Lee ◽  
Sandrine Ricote
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Physical Properties ◽  
Ferroelectric Properties ◽  
Ceramic Materials ◽  
Charge Carriers ◽  
Mobile Charge ◽  
Conductive Ceramics ◽  
Functional Ceramic

Functional ceramic materials are of interest in many applications due to their structural and chemical richness and the huge range of physical properties that can be generated and modified by the control of the former (electrical conductivity, thermo-mechanical properties, dielectric, piezoelectric, ferroelectric properties, etc [...]

scholarly journals Photoexcitation of PbS nanosheets leads to highly mobile charge carriers and stable excitons

Nanoscale ◽  
2019 ◽  
Vol 11 (44) ◽  
pp. 21569-21576 ◽  
Author(s):  
Jannika Lauth ◽  
Michele Failla ◽  
Eugen Klein ◽  
Christian Klinke ◽  
Sachin Kinge ◽  
...  
Keyword(s):  
Charge Carriers ◽  
Two Dimensional ◽  
Mobile Charge ◽  
Solution Processed

Colloidal two-dimensional (2D) PbS nanosheets exhibit stable excitons and highly mobile charge carriers (500–1000 cm2 V−1 s−1) rendering solution-processed nanomaterials suitable for ultrathin optoelectronics.

Highly Mobile Charge Carriers in Poly(Di-n-Alkyl)Silanes in the Solid and in the Mesophase

1993 ◽  
Vol 236 (1) ◽  
pp. 165-172 ◽  
Author(s):  
Garrelt P. Van Der Laan ◽  
Matthijs P. De Haas ◽  
John M. Warman ◽  
Holger Frey ◽  
Martin Möuller
Keyword(s):  
Charge Carriers ◽  
Mobile Charge
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