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Mathematics for electronics engineer 
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#1
Feb712, 09:52 AM

P: 2

Hello all,
I am currently working on modelling organic FETs. I would like to know if there exists any book that can help me in modelling i.e. I have a curve and I need a method or approach as to how this can be represented using an eqn. Also I need some literature recommendation for approximations (Taylor's expansion etc. ) to dilute complex eqns to simpler ones. 


#2
Feb712, 11:26 AM

Sci Advisor
P: 3,248

Exactly what sort of model are you dealing with? In the math section, there might be a shortage of experts on Field Effect Transistors, so don't assume your readers know about them. As to "organic" FETs, I don't know what those are. 


#3
Feb712, 03:14 PM

P: 2

Hello Tashi,
Thank you for your reply. My task is to develop a empirical model that is simple and closely mimics the current (Ids) behaviour of the transistor. Organic field effect transistors (FET) are a kind of MOSFET but with an organic semiconductor. The current output when plotted looks like that of a silicon MOSFET but with more nonlinearities. My task is to use the same model eqns of a silicon MOSFET and supplement with appropriate equations to model the nonlinearitites present in organic FET. I have read something similar in few semiconductor modeling books, where the author uses a funtion [sqrt(Vds + Const)  sqrt(Vds)] to model the short channel effect (a kind of nonlinearity) in the case of silicon MOSFET. I can visualize when the function is a simple sqrt, square, exp etc. But it gets hard, when there is superposition of 2 or more functions. Moreover, we have come across hundreds of mathematical functions. But only a handful of this is required to model the real world systems emphirically. Is there any book that explains in detail the mathematical (emphirical) modeling of real world systems in a systematic way. 


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