Charge Transport Mechanisms in Oligothiophene Molecular Junctions Studied by Electrical Conductance and Thermopower Measurements

Author(s):  
See Kei Lee ◽  
Ryo Yamada ◽  
Tatsuhiko Ohto ◽  
Shoji Tanaka ◽  
Hirokazu Tada
2010 ◽  
Vol 03 (04) ◽  
pp. 245-248 ◽  
Author(s):  
SEE KEI LEE ◽  
RYO YAMADA ◽  
HIROKAZU TADA ◽  
SHOJI TANAKA

The temperature dependence of electrical conductance of oligothiophene molecules with the length of 2.2 nm (5-mer), 5.6 nm (14-mer) and 6.7 nm (17-mer) was measured by break junction method with a scanning tunneling microscope to clarify the charge transport mechanisms. The conductance of 17-mer molecule increased exponentially with temperature whereas the conductance of 5-mer and 14-mer molecules did not change. These results indicate that the dominant charge transport mechanism changed from tunneling to thermally activated hopping at molecular length around 6.7 nm (17-mer).


2010 ◽  
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pp. 15806-15815 ◽  
Author(s):  
Adam Johan Bergren ◽  
Richard L. McCreery ◽  
Stanislav R. Stoyanov ◽  
Sergey Gusarov ◽  
Andriy Kovalenko

2005 ◽  
Vol 39 (3) ◽  
pp. 331-335
Author(s):  
G. A. Il’chuk ◽  
S. E. Nikitin ◽  
Yu. A. Nikolaev ◽  
V. Yu. Rud’ ◽  
Yu. V. Rud’ ◽  
...  

ACS Nano ◽  
2011 ◽  
Vol 5 (8) ◽  
pp. 6669-6685 ◽  
Author(s):  
Agostino Migliore ◽  
Abraham Nitzan

Nano Letters ◽  
2021 ◽  
Vol 21 (19) ◽  
pp. 8340-8347
Author(s):  
Songsong Li ◽  
Hao Yu ◽  
Jialing Li ◽  
Nicholas Angello ◽  
Edward R. Jira ◽  
...  

2020 ◽  
Vol 8 (44) ◽  
pp. 15759-15770
Author(s):  
Alexandra Harbuzaru ◽  
Iratxe Arrechea-Marcos ◽  
Alberto D. Scaccabarozzi ◽  
Yingfeng Wang ◽  
Xugang Guo ◽  
...  

Different charge transport mechanisms at the device interface are found for a series of ladder-type semiconductors with increasing chain length.


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