Kedu ihe bụ LED?

Ndị mmadụ aghọtala ihe ọmụma bụ isi na ihe semiconductor nwere ike iwepụta ìhè afọ 50 gara aga.Na 1962, Nick Holonyak Jr. nke General Electric Company mepụtara ngwa bara uru nke diode ọkụ a na-ahụ anya.

Ikanam bụ abbreviation nke English ìhè emitting diode, ya bụ isi Ọdịdị bụ a mpempe electroluminescent semiconductor ihe, enịm ke a leded shelf, na mgbe ahụ akara na epoxy resin gburugburu, ya bụ, siri ike encapsulation, n'ihi ya, ọ pụrụ ichebe esịtidem isi waya. ya mere LED nwere ezigbo arụmọrụ seismic.

AIOT nnukwu data kwenyere na a na-eji LED na mbụ mee ihe dị ka ihe ngosi ọkụ ọkụ maka ngwá ọrụ na mita, na mgbe e mesịrị, LEDs nke dị iche iche na-acha ọkụ ọkụ na-ejikarị eme ihe na ọkụ ọkụ okporo ụzọ na nnukwu ihuenyo ngosi, nke na-emepụta ezigbo uru akụ na ụba na nke ọha mmadụ.Were ọkụ okporo ụzọ uhie dị sentimita iri na abụọ dịka ọmụmaatụ.Na United States, a na-eji oriọna incandescent dị ogologo ndụ, na-arụ ọrụ dị ala 140-watt dị ka isi iyi ọkụ, nke na-emepụta 2000 lumens nke ìhè ọcha.Mgbe ị gafechara nzacha uhie, ọkụ ọkụ bụ 90%, na-ahapụ naanị 200 lumens nke ìhè uhie.N'ime oriọna a haziri ọhụrụ, ụlọ ọrụ ahụ na-eji ọkụ ọkụ 18 na-acha uhie uhie LED, gụnyere mfu sekit, ngụkọta nke 14 watts nke ike oriri, nwere ike ịmepụta otu mmetụta ọkụ.Ọkụ mgbama ụgbọ ala bụkwa mpaghara dị mkpa nke ngwa isi iyi ọkụ LED.

Ụkpụrụ nke LED

LED (Light Emitting Diode), bụ ngwaọrụ semiconductor steeti siri ike nke nwere ike ịgbanwe ọkụ eletrik ozugbo ka ọ bụrụ ìhè.Obi nke LED bụ mgbawa semiconductor, otu njedebe nke mgbawa na-ejikọta ya na nkwado, otu njedebe bụ ogwe na-adịghị mma, na njedebe nke ọzọ na-ejikọta ya na ogwe dị mma nke ike ọkụ, nke mere na a na-ekpuchi mgbawa dum. site na epoxy resin.Semiconductor wafer nwere akụkụ abụọ, otu akụkụ bụ ụdị semiconductor P, nke oghere na-achịkwa, na njedebe nke ọzọ bụ semiconductor ụdị N, bụ nke kachasị eletrọn.

Ma mgbe ejikọtara ihe abụọ a semiconductors, a na-emepụta "PN junction" n'etiti ha.Mgbe ihe dị ugbu a na-eme na mgbawa site na waya, a ga-agbanye electrons na mpaghara P, ebe electrons na oghere na-ejikọta, wee na-ebunye ike n'ụdị photon.Nke a bụ ụkpụrụ nke ọkụ ọkụ LED.Ogologo ogologo nke ìhè bụkwa agba nke ìhè, nke a na-ekpebi site na ihe na-emepụta "PN junction".