A lokacin da yake G.E. a lokacin yakin duniya na biyu, ya ci gaba da magnetron don radar jamming, wanda ya haifar da ci gaban tanda na microwave.Yayin da yake nazarin halaye na p-i-n diodes da aka yi amfani da su a matsayin masu gyara wutar lantarki, Hall yana da mahimmancin fahimta, wanda ya haifar da shi tare da William Shockley da W. T. Karanta, Jr., don nazarin sake haɗuwa da jigilar jigilar jigilar kayayyaki a cikin semiconductors. Hall ya ci gaba da laser na semiconductor a 1962, yayin da yake aiki a General Electric a Schenectady, New York. A cikin shekarun 1970, aikin Hall ya mayar da hankali kan photovoltaics da ƙwayoyin hasken rana. Ya yi ritaya a 1987, an ba shi takardun shaida 43 na Amurka a lokacin aikinsa. Tambaya: Yaya yawancin takardun shaida ya yi a lokacin da ya yi ritaya?
43 da kuma