Find the maximum wave- length of electromagnatic radiation which can c – InterviewSolution

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1.	Find the maximum wave- length of electromagnatic radiation which can creat a hole-electron pair in silicon. The band is silicon is `1.1 eV`. [Use `h = 6.6xx10^(-34) Js , c=3xx10^(8)ms^(-1), e=1.6xx10^(-19)C]`
Answer» Here, `E_(g) =1.1 eV` `=1.1xx1.6xx10^(-19)J` Let `lambda` be the wavelength of electromagnetic radiation which can create a hole-electron pair in silicon. Then `E_(g)=(hc)/lambda` or `lambda=(hc)/(E_(g))=((6.6xx10^(-34))xx(3xx10^(8)))/(1.1xx1.6xx10^(-19))` `=11.25xx10^(-7)m`

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