TITLE

Reversible and irreversible trapping at room temperature in poly(thiophene) thin-film transistors

AUTHOR(S)
Salleo, A.; Endicott, F.; Street, R. A.
PUB. DATE
June 2005
SOURCE
Applied Physics Letters;6/27/2005, Vol. 86 Issue 26, p263505
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We measured the bias stress characteristics of poly(thiophene) semicrystalline thin-film transistors (TFTs) as a function stress times, gate voltages, and duty cycles. At room temperature, the bias stress has two components: a fast reversible component and a slow long-lived component. We hypothesize that the irreversible component is due to charge trapping in the disordered areas of the semiconductor film. At low duty cycle (<2%), the fast bias stress component is reversed during the off-part of the cycle therefore the observed threshold voltage (VT) shift is only caused by long-lived trapping. Long-lived trapping follows power-law kinetics with a time exponent approximately equal to 0.37. We use these findings to estimate the lifetime of TFTs used as switches in display backplanes.
ACCESSION #
17545048

 

Related Articles

  • Comparative study of the photoresponse from tetracene-based and pentacene-based thin-film transistors. Choi, Jeong-M.; Jiyoul Lee; Hwang, D. K.; Jae Hoon Kim; Seongil Im; Kim, Eugene // Applied Physics Letters;1/23/2006, Vol. 88 Issue 4, p043508 

    We report on the photoresponse from tetracene-based and pentacene-based thin-film transistors (TFTs) with semitransparent NiOx source/drain electrodes and SiO2/p+-Si substrate. Both organic TFTs have been fabricated with identical channel thickness and device geometry. Compared with...

  • Low voltage complementary organic inverters. De Vusser, Stijn; Steudel, Soeren; Myny, Kris; Genoe, Jan; Heremans, Paul // Applied Physics Letters;4/17/2006, Vol. 88 Issue 16, p162116 

    We have developed a method for integrating n- and p-type organic thin-film transistors (OTFTs) on the same substrate. An integrated shadow mask was used for the n- and p-type semiconductor patterning. The integrated shadow mask can be aligned with submicron accuracy relative to the OTFT...

  • Influence of the dielectric roughness on the performance of pentacene transistors. Steudel, Soeren; De Vusser, Stijn; De Jonge, Stijn; Janssen, Dimitri; Verlaak, Stijn; Genoe, Jan; Heremans, Paul // Applied Physics Letters;11/8/2004, Vol. 85 Issue 19, p4400 

    The properties of the dielectric strongly influence the performance of organic thin-film transistors. In this letter, we show experimental results that quantify the influence of the roughness of the dielectric on the mobility of pentacene transistors and discuss the cause of it. We consider the...

  • Solution-processed InGaZnO-based thin film transistors for printed electronics applications. Jun Hyung Lim; Jong Hyun Shim; Jun Hyuk Choi; Jinho Joo; Kyung Park; Haseok Jeon; Mi Ran Moon; Donggeun Jung; Hyoungsub Kim; Hoo-Jeong Lee // Applied Physics Letters;7/6/2009, Vol. 95 Issue 1, p012108 

    This letter reports the utility of using the sol-gel process for exploring the library of multicomponent ZnO-based oxides as an active layer of thin film transistors. We chose InGaZnO as a starting material and modulated the Ga content to examine the potential of this material. Increasing the Ga...

  • Printable polythiophene gas sensor array for low-cost electronic noses. Chang, Josephine B.; Liu, Vincent; Subramanian, Vivek; Sivula, Kevin; Luscombe, Christine; Murphy, Amanda; Jinsong Liu; Fréchet, Jean M. J. // Journal of Applied Physics;7/1/2006, Vol. 100 Issue 1, p014506 

    A route for generating arrays of printable polythiophene-based gas sensor materials suitable for low-cost manufacturing is demonstrated. Materials with complementary sensor responses are synthesized by incorporating functional groups into the molecule, either along the polymer backbone or as...

  • Comparison of thin-film transistors fabricated at low temperatures (≤600 °C) on as-deposited and amorphized-crystallized polycrystalline Si. Kung, K. T.-Y.; Reif, R. // Journal of Applied Physics;2/15/1987, Vol. 61 Issue 4, p1638 

    Compares the performances of thin-film transistors (TFT) fabricated on as-deposited and amorphized-crystallized polycrystalline silicon films, prepared by the low-pressure chemical-vapor deposition technique on SiO[sub2]. Ways in which fabricated TFT can be employed; Techniques through which...

  • Mechanical force sensors using organic thin-film transistors. Darlinski, Grzegorz; Böttger, Ulrich; Waser, Rainer; Klauk, Hagen; Halik, Marcus; Zschieschang, Ute; x00FC;nter#Schmid, G&; Dehm, Christine // Journal of Applied Physics;5/1/2005, Vol. 97 Issue 9, p093708 

    The pressure dependence of pentacene (C22H14) transistors with solution-processed polyvinylphenol gate dielectric on glass substrates is investigated by applying uniaxial mechanical pressure with a needle. We found that organic thin-film transistors are sensitive to applied pressure inherently....

  • Threshold voltage shift in organic field effect transistors by dipole monolayers on the gate insulator. Pernstich, K.P.; Haas, S.; Oberhoff, D.; Goldmann, C.; Gundlach, D.J.; Batlogg, B.; Rashid, A.N.; Schitter, G. // Journal of Applied Physics;12/1/2004, Vol. 96 Issue 11, p6431 

    We demonstrate controllable shift of the threshold voltage and the turn-on voltage in pentacene thin film transistors and rubrene single crystal field effect transistors (FET) by the use of nine organosilanes with different functional groups. Prior to depositing the organic semiconductors, the...

  • High mobility top-gated pentacene thin-film transistors. Newman, Christopher R.; Chesterfield, Reid J.; Panzer, Matthew J.; Frisbie, C. Daniel // Journal of Applied Physics;10/15/2005, Vol. 98 Issue 8, p084506 

    A common device geometry for measuring the electrical characteristics of organic semiconductors is the thin-film organic field-effect transistor (OTFT). Mostly for reasons of cost, convenience, and availability, this usually involves depositing the organic material on a prefabricated gate...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics