Mobile Ionic Impurities in Poly(vinyl alcohol) Gate Dielectric: Possible Source of the Hysteresis in Organic Field-Effect Transistors

2008 ◽  
Vol 20 (5) ◽  
pp. 1018-1022 ◽  
Author(s):  
M. Egginger ◽  
M. Irimia-Vladu ◽  
R. Schwödiauer ◽  
A. Tanda ◽  
I. Frischauf ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Field Effect ◽  
Gate Dielectric ◽  
Field Effect Transistors ◽  
Poly Vinyl Alcohol ◽  
Organic Field Effect Transistors ◽  
Ionic Impurities

Ionic Impurities in Poly(vinyl alcohol) Gate Dielectrics and Hysteresis Effects in Organic Field Effect Transistors

2008 ◽  
Vol 1091 ◽  
Author(s):  
Martin Egginger ◽  
Mihai Irimia-Vladu ◽  
Reinhard Schwödiauer ◽  
Andreas Tanda ◽  
Siegfried Bauer ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Field Effect ◽  
Water Solubility ◽  
Field Effect Transistors ◽  
Gate Insulator ◽  
Poly Vinyl Alcohol ◽  
Organic Field Effect Transistors ◽  
Electronic Circuits ◽  
Metal Insulator Metal ◽  
Ionic Impurities

AbstractPoly(vinyl alcohol) (PVA) is a water based dielectric often used as a coating layer in paper industry. Due to its water solubility PVA is also interesting as gate insulator in organic field effect transistors. Depending on the preparation of the PVA gate, transistors with and without hysteresis can be produced, with applications in organic electronic circuits or memory elements. In the production of PVA, a major side product is sodium acetate, an ionic salt not completely removed during industrial purification. Such ionic impurities likely influence the hysteresis in PVA based organic field effect transistors. While a hysteresis is desirable in memory elements it is unwanted in transistors for electronic circuits. Ways to prepare transistors with a desired transfer characteristic are described, for example by using electronic grade products directly from the purchaser of PVA, or by employing PVA purified by means of dialysis. Measurements are performed with metal-insulator-metal (MIM) structures and organic field effect transistors (OFETs), where Buckminsterfullerene C60 is employed as organic semiconductor.

High-Performance Ambipolar Pentacene Organic Field-Effect Transistors on Poly(vinyl alcohol) Organic Gate Dielectric

2005 ◽  
Vol 17 (19) ◽  
pp. 2315-2320 ◽  
Author(s):  
Th. B. Singh ◽  
F. Meghdadi ◽  
S. Günes ◽  
N. Marjanovic ◽  
G. Horowitz ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Field Effect ◽  
High Performance ◽  
Gate Dielectric ◽  
Field Effect Transistors ◽  
Poly Vinyl Alcohol ◽  
Organic Field Effect Transistors
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