scholarly journals Techniques for characterization of charge carrier mobility in organic semiconductors

2012 ◽  
Vol 50 (15) ◽  
pp. 1130-1144 ◽  
Author(s):  
Akshay Kokil ◽  
Ke Yang ◽  
Jayant Kumar
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
Carrier Mobility ◽  
Charge Carrier Mobility

Spectroscopic Assessment of Charge‐Carrier Mobility in Crystalline Organic Semiconductors

2021 ◽  
pp. 2100579
Author(s):  
Oleg G. Kharlanov ◽  
Dmitry R. Maslennikov ◽  
Elizaveta V. Feldman ◽  
George G. Abashev ◽  
Oleg V. Borshchev ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
Carrier Mobility ◽  
Charge Carrier Mobility

The effect of side-chain length on the microstructure and processing window of zone-cast naphthalene-based bispentalenes

2019 ◽  
Vol 7 (43) ◽  
pp. 13493-13501 ◽  
Author(s):  
Katelyn P. Goetz ◽  
Kohei Sekine ◽  
Fabian Paulus ◽  
Yu Zhong ◽  
Daniel Roth ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Charge Carrier ◽  
Organic Semiconductors ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Side Chain ◽  
Processing Window ◽  
Conjugated Organic Semiconductors ◽  
Structure And Microstructure

The solubilizing side-groups of solution-processable π-conjugated organic semiconductors affect both the crystal structure and microstructure of the respective thin films and thus charge-carrier mobility in devices.

Molecular Origin of the Charge Carrier Mobility in Small Molecule Organic Semiconductors

2016 ◽  
Vol 26 (31) ◽  
pp. 5757-5763 ◽  
Author(s):  
Pascal Friederich ◽  
Velimir Meded ◽  
Angela Poschlad ◽  
Tobias Neumann ◽  
Vadim Rodin ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
Small Molecule ◽  
Carrier Mobility ◽  
Charge Carrier Mobility ◽  
Molecular Origin

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.

Charge carrier mobility in doped disordered organic semiconductors

2004 ◽  
Vol 338-340 ◽  
pp. 603-606 ◽  
Author(s):  
V.I. Arkhipov ◽  
P. Heremans ◽  
E.V. Emelianova ◽  
G.J. Adriaenssens ◽  
H. Bässler
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
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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