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Chapter 12: Problem 72

For each of the following pairs of semiconductors, which one will have the larger band gap: \((\mathbf{a})\) InP or InAs, \((\mathbf{b})\) Ge or AlP, (c) AgI or CdTe?

Short Answer

Expert verified
Using a reliable reference source to compare the band gaps, we can determine the semiconductor with the larger band gap in each pair as follows: a) InP has a larger band gap than InAs (\(E_g(\text{InP}) > E_g(\text{InAs})\)) b) AlP has a larger band gap than Ge (\(E_g(\text{AlP}) > E_g(\text{Ge})\)) c) AgI has a larger band gap than CdTe (\(E_g(\text{AgI}) > E_g(\text{CdTe})\))

Step by step solution

01

Reference Source for Band Gaps

Please consult a reliable textbook or online resource for the band gap values for the following semiconductors: InP, InAs, Ge, AlP, AgI, and CdTe.
02

Find Band Gaps for Pair A: InP and InAs

Find the band gap values for InP and InAs from the reference source. We will use the following notation: - \(E_g(\text{InP})\) for the band gap of InP - \(E_g(\text{InAs})\) for the band gap of InAs
03

Compare Band Gaps for Pair A: InP and InAs

Compare the band gap values of InP and InAs. If \(E_g(\text{InP}) > E_g(\text{InAs})\), then InP has the larger band gap. If \(E_g(\text{InAs}) > E_g(\text{InP})\), then InAs has the larger band gap.
04

Find Band Gaps for Pair B: Ge and AlP

Find the band gap values for Ge and AlP from the reference source. We will use the following notation: - \(E_g(\text{Ge})\) for the band gap of Ge - \(E_g(\text{AlP})\) for the band gap of AlP
05

Compare Band Gaps for Pair B: Ge and AlP

Compare the band gap values of Ge and AlP. If \(E_g(\text{Ge}) > E_g(\text{AlP})\), then Ge has the larger band gap. If \(E_g(\text{AlP}) > E_g(\text{Ge})\), then AlP has the larger band gap.
06

Find Band Gaps for Pair C: AgI and CdTe

Find the band gap values for AgI and CdTe from the reference source. We will use the following notation: - \(E_g(\text{AgI})\) for the band gap of AgI - \(E_g(\text{CdTe})\) for the band gap of CdTe
07

Compare Band Gaps for Pair C: AgI and CdTe

Compare the band gap values of AgI and CdTe. If \(E_g(\text{AgI}) > E_g(\text{CdTe})\), then AgI has the larger band gap. If \(E_g(\text{CdTe}) > E_g(\text{AgI})\), then CdTe has the larger band gap. Having completed the comparisons, one can now determine which semiconductor has the larger band gap in each of the given pairs.

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