Recent content by yasir.ustb

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    Undergrad Solar cell open circuit voltage and bandgap

    The open circuit voltage is characteristics of solar cell (specically for P-n junction solar cell) which depend only on the material parameters.
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    Graduate Difference between SAED pattern and XRD Pattern

    Thank you very much Quak, I have understand it now clearly, Also the article you suggested is very interesting, Once again thanks.
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    Graduate Difference between SAED pattern and XRD Pattern

    Hello every one! Why in SAED pattern some reflection are present but not in the powder XRD pattern? For example in my particular experiment FeCo bcc alloy nano structures, the XRD pattern contains only three reflection (110), (200) and (211). But in SAED pattern there are , reflection of...
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    Graduate Relationship between photoluminescence intensity and Absroption Intensity

    I have measured photoluminescence (PL) and light absroption spectra of some transtion metal oxide nanostructures. The PL intensity increases remarkably by decreasing the size of nanostructures. However, the intensity of absorption vary litte. Is there any relationship between the PL intensity...
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    Graduate Instrumental line broadening of Rigaku smartlab

    You mean that I have to measured XRD pattern of material like LaB6, Si and Al2O3 with the sam e instrument. Then fit the resolution function. But what is resolution function? how can i get instrumental line broadning from fitting of resolution function?
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    Graduate Instrumental line broadening of Rigaku smartlab

    Hi every one! I want to know the instrumental line broadening of Rigaku smartlab diffractrometer. I have searched out but i could not find any refrence. Please help me Thanks and best regards
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    Undergrad What happens when you connect a ptype semiconductor to a metal conductor?

    well it depends on vacuum level (value of work function) ∅ of P-type semiconductor and metal, http://www.cleanroom.byu.edu/ohmic-schottky.phtml
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    Undergrad Depletion Layers in pn junction

    Actually, In heavily doped P-N junction there are lot of donor (+ive charge) and accepters (-ive charge) in n and p region respectively. when junction is formed the electron from n side to p side to recombine with holes and vice versa, leaving behind -ive donor in n region and +ive acceptors in...