Question

4. An exciton consisting of an electron, with an effective mass $m_e^$, and a hole, with an effective mass $m_h^$, can be described using a hydrogen model. a) Calculate the exciton binding energy for bulk InP, assuming a dielectric constant $\epsilon = 12.56\epsilon_0$. b) Calculate the absorption band edge for bulk InP at 0 K.

          4. An exciton consisting of an electron, with an effective mass $m_e^*$, and a hole, with an effective mass $m_h^*$, can be described using a hydrogen model.
a) Calculate the exciton binding energy for bulk InP, assuming a dielectric constant $\epsilon = 12.56\epsilon_0$.
b) Calculate the absorption band edge for bulk InP at 0 K.

4. An exciton consisting of an electron, with an effective mass me^*, and a hole, with an effective mass mh^*, can be described using a hydrogen model.
a) Calculate the exciton binding energy for bulk InP, assuming a dielectric constant ϵ = 12.56ϵ0.
b) Calculate the absorption band edge for bulk InP at 0 K.

Added by Michael W.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adriano Chikande

12/07/2021

Step 1

6 * (ε^2) / (m_e** * m_h**) Given: ε = 12.56ε_0 m_e** = effective mass of electron m_h** = effective mass of hole For InP, the effective masses are approximately: m_e** = 0.08 m_0 m_h** = 0.5 m_0 where m_0 is the free electron mass. Plugging in the values: E_b Show more…

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An exciton consisting of an electron, with an effective mass m_(e)^(**), and a hole, with an effective mass m_(h)^(**), can be described using a hydrogen model. a) Calculate the exciton binding energy for bulk InP, assuming a dielectric constant ε=12.56ε_(0). b) Calculate the absorption band edge for bulk InP at 0K. 4. An exciton consisting of an electron with an effective mass m_e and a hole with an effective mass m can be described using a hydrogen model. a) Calculate the exciton binding energy for bulk InP, assuming a dielectric constant ε=12.56ε_0. b) Calculate the absorption band edge for bulk InP at 0K.