Diode-yada iftiimiya iftiinka waxaa si fudud loogu tilmaamaa LEDs.Waxay ka samaysan tahay iskudhisyo ay ku jiraan gallium (Ga), arsenic (As), fosfooraska (P), nitrogen (N), iwm.
Marka electrons iyo godadka dib isu yimaadaan, waxay soo saari karaan iftiin muuqda, sidaas darteed waxaa loo isticmaali karaa in la sameeyo diodes iftiin leh.Loo isticmaalo sida nalalka tilmaame ee wareegyada iyo qalabka, ama ka kooban qoraal ama bandhigyo dhijitaal ah.Gallium arsenides diodes namoota guddaa guddaa qabu, gallium phosphide kan ta’u, silikoon carrabide ta’uusaa ibsaniiruSababo la xiriira sifooyinka kiimikaad, waxay u kala qaybsantay diode iftiin-bixiya OLED iyo diode iftiin-bixiya inorganic.
Diode-ka iftiinku waa aalad caadi ahaan la isticmaalo oo soo saarta tamarta isku dhafka elektarooniga iyo godadka si ay u iftiimiyaan iftiinka.Waxaa si weyn loogu isticmaalaa goobta iftiinka.[1] Diodeyaasha iftiimiya waxay si wax ku ool ah ugu badali karaan tamarta korantada tamar iftiin, waxayna leeyihiin adeegsiyo kala duwan oo bulshada casriga ah, sida nalalka, bandhigyada fidsan, iyo aaladaha caafimaadka.[2]
Qaybaha elektaroonigga ah ee noocan ah waxay soo shaac baxeen horaantii 1962. Maalmihii hore, waxay kaliya sii dayn karaan iftiin yar oo casaan ah.Ka dib, noocyo kale oo monochromatic ah ayaa la sameeyay.Iftiinka maanta la sii dayn karo wuxuu ku faafay iftiinka muuqda, infrared iyo ultraviolet, iftiinka ayaa sidoo kale kor u kacay ilaa xad.Iftiinka.Isticmaalka ayaa sidoo kale loo isticmaalay sida nalalka tilmaamayaasha, muraayadaha bandhiga, iwm.;Iyada oo horumarka joogtada ah ee tignoolajiyada, diode-yada iftiimiya ayaa si weyn loogu isticmaalay bandhigyada iyo iftiinka.
Si la mid ah daloodhka caadiga ah, diodhyada iftiimiya waxay ka kooban yihiin isgoysyada PN, waxayna sidoo kale leeyihiin conductivity aan jiho lahayn.Marka danabka hore ee loo isticmaalo diode-ka iftiimiya, godadka laga duray aagga P ilaa aagga N iyo elektaroonnada laga duraa aagga N ilaa aagga P ayaa siday u kala horreeyaan ula xiriiraan elektaroonnada aagga N iyo bannaannada. ee aagga P ee dhowr mikron oo isgoysyada PN ah.Daloollada ayaa dib isu soo celiya oo soo saara fluorescence-ka sii daaya.Dawladaha tamarta ee elektarooniga iyo godadka agabka semiconductor ee kala duwan way kala duwan yihiin.Marka electrons iyo godadka dib isu yimaadaan, tamarta la sii daayay xoogaa way ka duwan tahay.Tamar badan oo la sii daayo, waa yaraanta hirarka iftiinka iftiinka.Sida caadiga ah loo isticmaalo waa diode-yada soo daaya casaan, cagaar ama huruud ah.Korontada burburka rogaal celiska ah ee diode iftiin-bixiya ayaa ka weyn 5 volts.Qalooca dabeecadeeda volt-ampere ee hore waa mid aad u kacsan, iyo iska caabin xaddidaya hadda waa in lagu xidhaa si taxane ah si loo xakameeyo hadda iyada oo loo marayo diode.
Qaybta xudunta u ah diode-ka ifaysa waa wafer ka kooban nooca P-semiconductor iyo nooca N-semiconductor.Waxaa jira lakabka kala-guurka ah ee u dhexeeya nooca P-semiconductor-ka iyo semiconductor-ka N-nooca, kaas oo loo yaqaan isgoyska PN.Isku xirka PN ee qaar ka mid ah qalabka semiconductor-ka, marka sidayaasha laga tirada badan yahay ee la isku duray iyo inta badan sidayaal ay dib isugu noqdaan, tamarta xad-dhaafka ah waxaa lagu sii daayaa qaab iftiin ah, si toos ah tamarta korontada ugu beddeleysa tamarta iftiinka.Iyada oo danab gadaale ah lagu rakibay isgoysyada PN, way adag tahay in la isku duro sidayaasha laga tirada badan yahay, markaa ma sii daayo iftiin.Marka ay ku jirto xaalad shaqo oo togan (taas oo ah, koronto togan ayaa lagu dabaqaa labada daraf), marka socodka hadda ka soo qulqulo LED anode ilaa cathode, crystal semiconductor wuxuu soo saaraa iftiin midabyo kala duwan oo ka soo jeeda ultraviolet ilaa infrared.Xoogga iftiinka iftiinka wuxuu la xiriiraa hadda.


Waqtiga boostada: Seb-10-2021