▁to ▁the ▁other . ▁As ▁thick ness ▁increases , ▁the ▁current ▁goes ▁down ▁as ▁much ▁as ▁the ▁voltage ▁goes ▁up . ▁ ▁In ▁some ▁cases , ▁the ▁current ▁has ▁different ▁signs ▁depending ▁on ▁the ▁light ▁polar ization . ▁This ▁would ▁not ▁occur ▁in ▁an ▁ordinary ▁solar ▁cell ▁like ▁sil icon . ▁ ▁App lications ▁ ▁The ▁bulk ▁phot ov olta ic ▁effect ▁is ▁believed ▁to ▁play ▁a ▁role ▁in ▁the ▁phot ore f ract ive ▁effect ▁in ▁l ith ium ▁n io b ate . ▁ ▁See ▁also ▁Sem icon duct ors ▁Phot ov olta ic ▁effect ▁Virtual ▁particle ▁ ▁References ▁▁ ▁Category : Sem icon duct ors ▁Category : E ner gy ▁conversion <0x0A> </s> ▁Allen ▁Lee ▁Ge iber ger ▁Sr . ▁( born ▁September ▁ 1 , ▁ 1 9 3 7 ) ▁is ▁an ▁American ▁former ▁professional ▁gol fer . ▁ ▁Professional ▁career ▁Ge iber ger ▁turned ▁pro ▁in ▁ 1 9 5 9 ▁and ▁joined ▁the ▁P GA ▁Tour ▁in ▁ 1 9 6 0 . ▁Ge iber ger ▁won ▁ 1 1 ▁tournament s ▁on ▁the ▁P GA ▁Tour , ▁the ▁first ▁being ▁the ▁ 1 9 6 2 ▁Ontario ▁Open ▁and ▁the ▁biggest ▁being ▁the ▁ 1 9 6 6 ▁P GA ▁Championship , ▁a ▁major ▁title . ▁He ▁won ▁the ▁Tournament ▁Play ers ▁Championship ▁in ▁ 1 9 7 5 , ▁and ▁played ▁on ▁the ▁Ry der ▁Cup ▁teams ▁in ▁ 1 9 6 7 ▁and ▁ 1 9 7 5 . ▁Ge iber ger ▁also