The discovery of the p–n junction is usually attributed to American physicist Russell Ohl of Bell Laboratories.
Riccarton Junction railway station | Petticoat Junction | junction | Junction (traffic) | Haines Junction, Yukon | Grand Junction, Colorado | Junction | White River Junction, Vermont | Haines Junction | Grand Junction | Llandudno Junction | Bhowani Junction | Annapolis Junction, Maryland | The Junction | Junction Oval | Grand Junction Railway | Fredericton Junction, New Brunswick | Fredericton Junction | Mingo Junction, Ohio | Junction (rail) | Hallelujah Junction | Grand Junction Canal | Death Valley Junction, California | California Junction, Iowa | California Junction | Birmingham and Liverpool Junction Canal | Bipolar junction transistor | Belgrade railway junction | Apache Junction, Arizona | Yarra Junction, Victoria |
Solar cells later became practical for power uses after Russell Ohl's 1941 development of silicon p/n junction cells that reached efficiencies above 5% by the 1950s/1960s.