Isimiso esikhanyayo se-LED

-NkeUkukhanya komsebenzi ophindeka, Ukukhanya Kokukhempa Okuphathekayona-I-Multifunctional HeadlampSebenzisa uhlobo lwe-LED Bulb. Ukuqonda umgomo we-dide wahola, okokuqala ukuqonda ulwazi oluyisisekelo lwe-semiconductors. Izakhiwo ezisebenzayo zezinto zokwenziwa ze-semiconductor ziphakathi kwabaqhubi kanye nabathakathi. Izici zayo ezihlukile yilezi: lapho i-semiconductor ivuselelwa ukukhanya kwangaphandle kanye nezimo zokushisa, ikhono layo lokuziphatha lizoshintsha kakhulu; Ukungeza amanani amancane okungcola ku-semiconductor emsulwa kukhulisa amandla ayo okwenza ugesi. I-Silicon (SI) ne-germanium (ge) yiyona esetshenziswa kakhulu i-semiconductors ku-elekthronikhi yanamuhla, futhi ama-elektroni awo angaphandle ane. Lapho ama-athomu e-silicon noma ama-athomu e-gerstanium akha ikristalu, ama-athomu angomakhelwane axhumana nawo, ukuze ama-elekthronikhi angaphandle abiwe ngama-athomu amabili, akha i-comban bond ehlelweni ekristalu, okuyinto enhle yekhono lekhono. Emazingeni okushisa asekamelweni (300k), ukuthokozela okushisayo kuzokwenza amanye ama-elektroni angaphandle athole amandla anele okuhlukana nesibopho esingenhla futhi abe ngama-elektroni amahhala, le nqubo ibizwa ngokuthi yi-inforic excritical. Ngemuva kokuthi i-elektroni ingabekezeleli ukuba nge-electron yamahhala, isikhala esishiywe esibophweni se-combared. Lesi sikhala sibizwa ngokuthi umgodi. Ukuvela komgodi kuyisici esibalulekile esihlukanisa i-semiconductor kumqhubi.

Lapho inani elincane lokungcola kwePentavalent enjenge-phosphorus lingezwa ku-seminnsic semicinductor, lizoba ne-elektroni eyengeziwe ngemuva kokuthola isibopho se-combared namanye ama-athomu ama-semiconductor. Le electron eyengeziwe idinga amandla amancane kakhulu ukuqeda isibopho futhi ibe nge-elektroni yamahhala. Lolu hlobo lokungcola lwe-semiconductor lubizwa nge-electronic semiconductor (n-texmonductor). Kodwa-ke, engeza inani elincane lokungcola okuyisisekelo kwe-Trivalent (njenge-Boron, njll.) Ku-seminnsic semicinductor, ngoba inama-elektroni amathathu kuphela engxenyeni yangaphandle, ngemuva kokukhanga ama-athomu ama-semiconductor azungezile, kuzodala isikhala ku-crystal. Lolu hlobo lokungcola lwe-semiconductor lubizwa nge-hole semiconductor (p-tex semiconductor). Lapho uhlobo lwe-n-tex nohlobo lwe-p-tex Womabili la ma-elektroni kanye nezimbobo zisetshenziswa ekuhlushweni okuphansi, zishiya zikhokhiswa amacala kodwa ama-ion arvice abhubhisa ukungathathi hlangothi kukagesi kwangempela kwezifunda zohlobo lwe-N kanye ne-P-Type. Lezi zinhlayiya ezikhokhisiwe ze-Imobile zivame ukubizwa ngokuthi yizindleko zesikhala, futhi zigxile eduze kwesimo sezindawo ze-N ne-P ukuze sakha isifunda esincanyana kakhulu sesikhala semali, eyaziwa ngokuthi i-PN Junction.

Lapho i-Forch Bias Voltage isetshenziswa kuwo womabili ama-Exs of the Pn Junction (Voltage Voltage ohlangothini olulodwa lwe-P-Type), izimbobo nama-elektroni wamahhala azulazula ezungeze omunye nomunye, edala insimu yangaphakathi kagesi. Izimbobo ezintsha ezisanda kufakwa ziphinde zibuke nge-elektroni yamahhala, kwesinye isikhathi zikhulula amandla ngokweqile ngendlela ye-Photons, okungukukhanya esikubona kukhishwe yi-LEDs. I-spectrum enjalo iyincithakalo enjalo, futhi njengoba impahla ngayinye inegebe elihlukile le-band, ama-wavelength ama-photon akhishwe ahlukile, ngakho-ke imibala ye-LEDS inqunywa ngezinto eziyisisekelo ezisetshenzisiwe.