Modeling of Drift and Hysteretic Sensing Phenomena of the Ba0.7Sr0.3TiO3 pH-Ion-Sensitive Field-Effect Transistor

作者：Chen Chun Yuan^*; Chou Jung Chuan; Chou Hsueh Tao

来源：Japanese Journal of Applied Physics, 2008, 47(11): 8525-8529.

DOI：10.1143/JJAP.47.8525

• barium strontium titanate (BST)
• drift
• hydrated layer

The drift and hysteretic behaviors of sensitive films are of significant interest because of their importance for stability. In this Study. I simple method based oil the electrochemical permeation method was used to simulate the drift phenomena of the novel Ultra-thin film for the H+ -sensing, behavior of barium strontium titanate (BST). Owing to hydro-en ion infusion into the sensitive film Surface to form a hydrated layer, this film exhibits superior agreement between the experimental and simulated Curves when the hydrogen ion diffusion Coefficient is 1 x 10(19) cm(2)/s the time dependence of the chemical response was also investigated by adopting a three time constant models to obtain the amplitude and time constant. The hysteretic loop effects; are presented oil the basis of different loop times. The hysteretic quantity was observed to increase with increasing loop time. [DOI: 10.1143/JJAP.47.8525]

• 出版日期2008-11