题目内容

The excess minority carrier lifetime at the surface is ( ) the corresponding lifetime in the bulk material.

A. equal to
B. more than
C. small than
D. greater than

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The excess minority carrier lifetime at the surface is greater than the corresponding lifetime in the bulk material. ( )

In the Shockley-Read-Hall Theory of recombination,the basic trapping and emission processes are ( ).

A. capture of electron
B. emission of electron
C. capture of hole
D. emission of hole

Since the internal E-field creates a force attracting the electrons and holes, this E-field will hold the pulses of excess electrons and excess holes together. The negatively charged electrons and positively charged holes then will drift or diffuse together with a single effective mobility or diffusion coefficient. This phenomenon is called ______ .

In Haynes-Shockley experiment, ( ) can be determined from this single experiment.

A. the minority carrier mobility
B. lifetime
C. diffusion coefficient
D. the majority carrier mobility