Charge carrier mobility in one-dimensional aligned π-stacks of conjugated small molecules with a benzothiadiazole central unit

2017 ◽  
Vol 19 (12) ◽  
pp. 8330-8339 ◽  
Author(s):  
Deyan Raychev ◽  
Olga Guskova
Keyword(s):  
Charge Carrier ◽  
Small Molecules ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Charge Carriers ◽  
Central Unit ◽  
Dft Methods ◽  
Crystalline Materials ◽  
One Dimensional ◽  
Mobility Of Charge Carriers

The hopping mobility of charge carriers in organic crystalline materials consisting of benzothiadiazole-cored molecules with thiophene or furan flanks was analyzed using DFT methods.

Phase Segregation via Etching-Induced Cation Migration in CoSx-ZnS Nanoarchitectures for Solar Hydrogen Evolution

2022 ◽  
Author(s):  
Zirong Shen ◽  
Junmin Huang ◽  
Junying Chen ◽  
Yingwei Li
Keyword(s):  
Photocatalytic Activity ◽  
Charge Carrier ◽  
Hydrogen Evolution ◽  
Carrier Mobility ◽  
Phase Segregation ◽  
Charge Carrier Mobility ◽  
Charge Carriers ◽  
Solar Hydrogen ◽  
Cation Migration ◽  
Low Charge

Low charge carrier mobility limits the development of highly efficient semiconductor-based photocatalysis. Heterointerface engineering is a promising approach to spatially separate the photoexcited charge carriers and thus enhance photocatalytic activity....

On the relations between backbone thiophene functionalization and charge carrier mobility of A–D–A type small molecules

2020 ◽  
Vol 44 (35) ◽  
pp. 15177-15185
Author(s):  
Chunlin Xu ◽  
Xiaoping Xu ◽  
Shaohui Zheng
Keyword(s):  
Charge Carrier ◽  
Small Molecules ◽  
Carrier Mobility ◽  
Charge Carrier Mobility

Backbone thiophene functionalization: an efficient way to improve the charge carrier mobility of A–D–A type small molecules.

scholarly journals Population dependence of THz charge carrier mobility and non-Drude-like behavior in short semiconductor nanowires

Nanoscale ◽  
2021 ◽  
Author(s):  
Alexander W. Achtstein ◽  
Nina Owschimikow ◽  
Michael Tiberius Quick
Keyword(s):  
Charge Carrier ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Semiconductor Nanowires ◽  
Charge Carriers ◽  
Radiation Absorption ◽  
Thz Radiation

We investigate THz radiation absorption by charge carriers, focusing on the mobility in nanorods and wires. We show that for short rods the mobility is limited by the high spacing...

Ultrafast Photoconductivity in Organic Semiconductors

2006 ◽  
Vol 935 ◽  
Author(s):  
Oksana Ostroverkhova ◽  
David G. Cooke ◽  
Frank A. Hegmann ◽  
John E. Anthony ◽  
Vitaly Podzorov ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Brick Wall ◽  
One Dimensional ◽  
Organic Molecular Crystals ◽  
Charge Carrier Dynamics ◽  
Transient Photoconductivity ◽  
Comprehensive Study

ABSTRACTWe present comprehensive study of ultrafast charge carrier dynamics in a variety of organic molecular crystals. In all samples, we observed sub-picosecond charge photogeneration and band-like transport, characterized by (i) an increase in charge carrier mobility as the temperature decreases in a wide temperature range of at least 20 K – 300 K and (ii) mobility anisotropy in the a-b plane of the crystals. The temperature dependence of the decay dynamics of the transient photoconductivity reveals the presence of shallow trapping sites in herring-bone-type-structured crystals (such as pentacene (Pc), tetracene (Tc), and rubrene (Rub)), while such traps are apparently absent in “brick-wall”-type crystals (such as functionalized pentacene (FPc)). We also report on the measurements of the charge carrier mobility anisotropy in the a-b plane of two types of FPc single crystals. Anisotropies of approximately 3.5 and 11.6 were obtained in the crystals characterized by crystal structures favoring two-dimensional and one-dimensional charge transport, respectively, consistent with the degree of π-overlap along different directions in the crystals.

Significance of secondary forces toward improving the charge carrier mobility of Isoindigo based conjugated small molecules

2021 ◽  
pp. 138621
Author(s):  
Satej S Dharmapurikar ◽  
Arulraj Arul Kashmir ◽  
Tanya Kumari ◽  
Virbhadra Kalalawe ◽  
Maruti Kanetkar ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Small Molecules ◽  
Carrier Mobility ◽  
Charge Carrier Mobility

scholarly journals Charge carrier mobility dynamics in organic semiconductors and solar cells

2020 ◽  
Vol 60 (1) ◽  
Author(s):  
Vidmantas Gulbinas
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Organic Semiconductors ◽  
Organic Solar Cells ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Charge Carriers ◽  
Organic Layer ◽  
Stoichiometric Ratio ◽  
Donor And Acceptor

Charge carrier mobility in organic semiconductors is not a constant value unambigously characterizing some particular material, but depends on the electric field, temperature and even on time after it was generated or injected. The time dependence is particularly important for the thin-film devices where charge carriers pass the organic layer before mobility reaching its stationary value. Here we give a review of experimental techniques with ultrafast timeresolution enabling one to address the mobility kinetics and analyse properties of the time-dependent mobility in conjugated polymers and organic solar cells. We analyse kinetics during the charge carrier generation and extraction of free charge carriers. The mobility typically decreases by several orders of magnitude on a picosecond-nanosecond time scale; however, its kinetics also depends on the investigation technique. The mobility kinetics in blends for bulk heterojunction solar cells strongly depends on the stoichiometric ratio of donor and acceptor materials.

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