Semiconductor parameters Measurment ?

[SphinX]

Hi,

Please i search for a How measure a semiconductor measurment (no. of n, no. of p , conductivity, Mobility , Current .....)

I want a partical example for my report pleeeeeeeeeeeeeessssssseeee?

Thanks

 

[flatulent]

Usually you know what the doping is. If you do not, the Hall effect is used to determine the major carrier type. Then you measure the dimensions and resistance between opposite surfaces and back out the doping level. If it is a diffusion, you measure the surface resistivity in ohms/square with a 4 point probe measurement. You then remove a layer of the material by oxidizing it and then removing the oxide. You then measure the resistance. The difference is the sheet resistance of the layer removed. From the sheet resistance and the thickness removed you can back out the doping level.

Since the product of the n and p carriers is equal to the intrinsic number squared, you can back out the other polarity density.

 

[SphinX]

Hi,

Thanks Can you guide me to any documents about this please ?

Thanx very much

 

[superluminal]

Parameter extraction is a very big issue. I can help you if you define some parameters exactly. I don't have a "general" ebook. I know a couple of good books on the subject but not in ebook format.

Be specific and I will help you , ISA

 

[SphinX]

Hi Superluminal,

Please i want just a report on how to measure the semiconductor physics in the LAB such as

p (holes)
n(electrons)
Mobility
Current
energy gap
the absorb photons
cycletron resonance

Please define what you want.

I need your hellllllllllp
I will give you 100 points or all my points if you want

Thanx Very Much

 

[brucechenwei]

I can give you what you want...
No need to beg anyone!

 

[werther_lizl]

I guess practically, you can go to some equipment vendor manuals to find out how to measure things i.e. Agilent etc.

I had seen Agilent manual for hand probes, I don't know if I can find them now, I will email you once I find them.

 

[BLUEGOLD]

Unfortunaly, I have the same problem, to get the parameters of a apd to simulate the behavior without destroy it.
What i could do now? God.
Maybe what i can do is just to test the output of apd under different bias voltage or temprature...