Ambipolar Transport

[@peterzhang2102]

Fantastic video, thank you for the information!

[@jcinde]

what a fantastic Video, thanks for this math explain ,really extremely helpful 🥰

[@Kevin-sl8bw]

this is incredible video, hope you can make more video of solid state device.

[@jigarfaria]

What will happen to the ambipolar mobility at high level injection? Since Δn=Δp, will it be zero? But how does this exaplin the carrier flow if the mobility is zero? PS: At 8:56 you didn't write the derivative on left side of the equation.

[@moody8311]

Thank you, Finally clicked for me.

[@dongxiawei944]

The video is helpful

[@giuseppecautero5057]

I have only one comment on the beautiful presentation (thanks!): In the first few minutes the instructor begins by saying: when photons arrive then we measure a current. Is flawless. But then he tells me that positive charges move together with negative ones. But this does NOT generate current !!! I also have some questions: it is said that they move together. Good. Then we arrive at the result that the mobility is that of minority charges. Great, but mobility is a positive number. Then: what is the direction, particularly in the case I create positive and negative charges in an intrinsic semiconductor? (Where the concept of minority charges makes no sense). That is: does ambipolar transport only concern doped semiconductors in the presence of an external electric field?