deletions | additions       diff --git a/A_PV_will_reach_the__.md b/A_PV_will_reach_the__.md  index 3ac3a62..6dc8a60 100644  --- a/A_PV_will_reach_the__.md  +++ b/A_PV_will_reach_the__.md 
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* All incident light is absorbed below the band gap of the material, and each absorbed photon generates an electron-hole pair  * Recombination is direct (band to band) and no radiative recombination is present.  * There are otherwise no limitations on the transport of charge (infinite mobility, perfectly reflecting contacts) contacts): Real materials have a non-ideal back contact, they will not benefit completely from the photon recycling that occurs in a ideal reflecting system.