Characterization of Interfaces Between Contacts and Active Layer in Organic Photovoltaics Using Impedance Spectroscopy and Equivalent Circuit Model

2015 ◽  
Vol 5 (3) ◽  
pp. 903-911 ◽  
Author(s):  
En-Ping Yao ◽  
Shiun-Ming Shiu ◽  
Yi-Jhe Tsai ◽  
Yu-Shyan Lin ◽  
Wei-Chou Hsu
Keyword(s):  
Impedance Spectroscopy ◽  
Equivalent Circuit ◽  
Active Layer ◽  
Organic Photovoltaics ◽  
Equivalent Circuit Model ◽  
Circuit Model

Measuring and Modeling Analysis of Electrochemical Impedance Spectroscopy for Hydration Procedure of Cement Materials

2012 ◽  
Vol 588-589 ◽  
pp. 1033-1036 ◽  
Author(s):  
Xiang Ping Xian ◽  
Yan Shuai Wang ◽  
Feng Xing ◽  
Bi Qin Dong
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Equivalent Circuit ◽  
Electrochemical Impedance ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Cement Material ◽  
Capacitance Effect ◽  
Phase Transmission ◽  
Multi Phase

In this paper, the electrochemical impedance spectroscopy method is applied to characteristic the hydration procedure in cement materials. And a new equivalent circuit model is developed to express the hydration procedure of cement material. As cement paste is a complicated electrochemical system with multi-phase transmission, the equivalent circuit model is considered with the additional double layer capacitance effect at the interface among the hydration products in cement materials. It can express the electrochemical station in cement material, as the multi-phase mass transmission in the cement-based material during the hydration procedure.

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