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Affiliation of Author(s):化学工程学院

Journal:APPLIED PHYSICS LETTERS

Funded by:省、市、自治区科技项目

Key Words:FIELD-EFFECT TRANSISTORS; STABILITY; DEPENDENCE; TIME

Abstract:We investigated the electrical instability of vanadyl-phthalocyanine (VOPc) thin-film transistors (TFTs) at various temperatures. The results demonstrate a slow threshold voltage shift in the bias stress process and a rapid recovery after the removal of bias stress, which indicates that a slower degradation process occurs in the on state while a faster removal in the off state of VOPc TFTs. The shift of threshold voltage comes from traps generated at the organic/dielectrics interface. Additionally, a relaxation time of 10(7) s was obtained at room temperature according to the stretched exponential model, which is comparable to a-Si: H TFTs. Therefore, VOPc TFTs are suitable to be applied in flat panel displays.

First Author:Wang lena

Indexed by:Journal paper

Page Number:1

ISSN No.:0003-6951

Translation or Not:no

Date of Publication:2008-10-27