Current-voltage characteristics of metal-variband organic semiconductor-organic semiconductor-metal heterostructures

1990 ◽  
Vol 33 (3) ◽  
pp. 255-259
Author(s):  
�. F. Ryannel'
Keyword(s):  
Organic Semiconductor ◽  
Current Voltage ◽  
Current Voltage Characteristics

scholarly journals Current-Voltage Characteristics of the Metal / Organic Semiconductor / Metal Structures: Top and Bottom Contact Configuration Case

2013 ◽  
Vol 19 (1) ◽  
Author(s):  
Šarūnas MEŠKINIS ◽  
Mindaugas PUCĖTA ◽  
Kęstutis ŠLAPIKAS ◽  
Sigitas TAMULEVIČIUS ◽  
Angelė GUDONYTĖ ◽  
...  
Keyword(s):  
Organic Semiconductor ◽  
Metal Structures ◽  
Bottom Contact ◽  
Contact Configuration ◽  
Current Voltage ◽  
Metal Organic ◽  
Current Voltage Characteristics

Current-Voltage Measurements as a Function of Applied Tip Force on Pentacene by Conducting Probe Microscopy

2000 ◽  
Vol 660 ◽  
Author(s):  
Serkan Zorba ◽  
Neil J. Watkins ◽  
Li Yan ◽  
Yongli Gao
Keyword(s):  
Organic Semiconductor ◽  
Electrical Contact ◽  
Hole Injection ◽  
Atomic Force ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Tunneling Phenomenon ◽  
Injection Barrier ◽  
Reproducible Manner ◽  
Increasing Load

ABSTRACTCurrent-voltage characteristics of organic semiconductor pentacene were studied as a function of applied tip force using conducting probe atomic force microscope. I-V measurements were performed on 150Å and 300Å pentacene films. No electrical contact was observed until 20 nN of tip force for the 150Å film coverage, whereas electrical contact was established easily with a few nN of tip force values for the 300Å film coverage. On both films, once an electrical contact was obtained, the conductance was observed to increase with increasing load. At about 50 nN and higher loads we lost electrical contact in both cases in a reproducible manner. While I-V on 150Å pentacene film showed a rectifying behavior, I-V on 300Å pentacene looked like typical I-V curves of tunneling phenomenon. From these measurements, we have estimated a hole injection barrier of about 0.76 eV and a band gap of about 2.00 eV for pentacene. These results are in agreement with those in the literature.

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