Questions about BJT

Hi, i have studied bjt but i have same questions to do...

1)if i have a npn bjt with Vbe>0 and Vbc0 and Vbc>0 the current Ic is positive or negative?And the current Ie? i have also a question about heterostructure: if the heterostructure is in thermal equilibrium the fermi level is equal to intrinsic fermi level always in x=0?
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silla822
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Homework? ... Steve

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Little Steve

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