N'ime 60s nke narị afọ gara aga, ndị ọrụ sayensị na teknụzụ jiri ụkpụrụ nke semiconductor PN junction luminescence mepụta diodes ọkụ ọkụ.LED mepụtara n'oge ahụ jiri GaASP, agba ya na-acha uhie uhie.Mgbe ihe fọrọ nke nta ka ọ bụrụ afọ 30 nke mmepe, LED nke onye ọ bụla maara nke ọma enweela ike ịmịpụta uhie, oroma, odo, green, blue na agba ọkụ ndị ọzọ.Otú ọ dị, a na-emepụta ọkụ ọkụ na-acha ọcha maka ọkụ naanị mgbe 2000 gasịrị, a na-ewebata onye na-agụ ya na LED ọcha maka ọkụ.Isi iyi ọkụ ọkụ ọkụ izizi nke semiconductor PN junction luminescence ụkpụrụ pụtara na mmalite 60s nke narị afọ nke 20.
Ihe eji eme ihe n'oge ahụ bụ GaAsP, nke na-egbuke egbuke na-acha uhie uhie (λp = 650nm), na n'oge a na-agba ọsọ nke 20 mA, ọkụ na-egbuke egbuke bụ nanị puku kwuru puku ole na ole nke lumens, na arụmọrụ nke kwekọrọ na ya bụ ihe dịka 0.1 lumens kwa watt. .N'etiti 70s, e webatara ihe ndị dị na In na N iji mee ka LED na-emepụta ìhè ndụ ndụ (λp = 555nm), ìhè edo edo (λp = 590nm) na ọkụ oroma (λp = 610nm), na arụ ọrụ ọkụ na-abawanye na 1. lumen / watt.Ka ọ na-erule mmalite 80s, isi iyi ọkụ GaAlAs LED pụtara, na-eme ka arụmọrụ ọkụ ọkụ na-acha uhie uhie ruru 10 lumens kwa watt.Na mmalite 90s, ihe ọhụrụ abụọ, GaAlInP, nke na-eme ka ọkụ na-acha uhie uhie na nke na-acha odo odo, na GaInN, nke na-eme ka ìhè na-acha akwụkwọ ndụ na-acha anụnụ anụnụ, na-emepụta nke ọma, bụ nke mere ka ọkụ ọkụ ọkụ dịkwuo mma.Na 2000, LED mere nke mbụ nwetara ọrụ ọkụ nke 100 lumens / watt na mpaghara uhie na oroma (λp = 615nm), ebe LED mere nke ikpeazụ nwere ike iru 50 lumens / watt na mpaghara ndụ ndụ (λp = 530 nm).
Oge nzipu: Nov-11-2022