Mhute nemvura zvinogara zvichiitika. Mumamiriro ezvinhu aya asingaonekwe zvakanaka, kutyaira kana kufamba mumugwagwa kunogona kuomera vatyairi nevanofamba netsoka, asi tekinoroji yemazuva ano yemwenje ye LED iri kupa vafambi kufamba kwakachengeteka.
Chiedza chemugwagwa che LEDitsime remwenje inotonhora ine simba rakasimba, ine hunhu hwekuchengetedza nharaunda, isina kusvibiswa, simba shoma rinoshandiswa, inoshanda zvakanyanya, uye inogara kwenguva refu. Naizvozvo, mwenje wemugwagwa we LED uchava sarudzo yakanakisa yekugadzirisa magetsi emugwagwa nenzira inochengetedza simba. Mwenje wemugwagwa we LED itsime remwenje rine simba rakasimba rakavakirwa pa semiconductor pn junction, iro rinogona kuburitsa chiedza nesimba remagetsi risina simba. Pasi pe voltage yakati positive bias uye injection current, maburi anopinzwa mu p-region uye maerekitironi anopinzwa mu n-region anopararira kunzvimbo inoshanda mushure me radiative recombination uye anoburitsa ma photon, achishandura simba remagetsi kuita simba rechiedza zvakananga. Mwenje wemugwagwa we LED itsime remwenje rine simba rakasimba rakavakirwa pa semiconductor pn junction, iro rinogona kuburitsa chiedza nesimba remagetsi risina simba. Pasi pe voltage yakati positive bias uye injection current, maburi anopinzwa mu p-region uye maerekitironi anopinzwa mu n-region anopararira kunzvimbo inoshanda mushure me radiative recombination uye anoburitsa ma photon, achishandura zvakananga simba remagetsi kuita simba rechiedza.
Mabhenefiti emwenje we LED mumhute nemvura anogona kuratidzwa muzvikamu zvitatu:
1. Kutungamira kwechiedza chinoburitswa;
2. Hunhu hwema LED machena eWavelength;
3. Kuwanda kwewavelength iyi zvichienzaniswa nezvimwe zvinhu zvinopa chiedza.
Musiyano uripo pakati pemwenje ye LED nedzimwe nzira dzese dzechiedza ihukuru hwemafungu ayo anoburitsa simba, uye kuti madonhwe emvura anopindirana sei kana kukanganisa mwenje pahurefu hwemafungu iwayo, kunyanya sezvo saizi yemadonhwe emvura ichichinja.
Masosi echiedza anonyanya kuburitsa simba rechiedza mumafungu ebhuruu espectrum inooneka, akadai sema LED, anoshanda zviri nani kupfuura mamwe masosi echiedza mumamiriro ezvinhu asingaonekwe zvakanyanya.
Chiedza chiri munzvimbo yeruvara rwepepuru yespectral range chine mawavelength mapfupi pane chiedza chiri munzvimbo tsvuku. Zvidimbu zvemvura mumhepo zvinowanzopfuura chiedza chiri munzvimbo yero-orenji-tsvuku, asi zvinowanzo kuparadzira chiedza chebhuruu. Izvi zvinogona kunge zvichikonzerwa nekuti zvidimbu zvemvura zvinowanzofanana nemawavelength ebhuruu. Nokudaro, kana denga rakajeka mushure memvura kana mhepo yakachena mumatsutso (pane zvidimbu zvishoma zvakaoma mumhepo, kunyanya mamorekuru anopararira), pasi pesimba guru rekupararira kwemamorekuru emumhepo, chiedza chebhuruu chinopararira kuti chizadze denga, uye denga rinoita sebhuruu. Chiitiko ichi chinozivikanwa seRayleigh scattering.
Mumamiriro ezvinhu asingaonekwe zvakanaka, zvidimbu zvemvura zvinowedzera kukura kusvika pazvinenge zvisisina kufanana nehukuru hwemafungu echiedza chebhuruu. Panguva iyi, zvinoenzana nehukuru hwemafungu eruvara rweyero-orenji-tsvuku. Zvikamu zvemvura zvinowanzo pararira nekudzvinyirira chiedza mumabhandi aya, asi zvichipfuura nechiedza chebhuruu. Ndokusaka chiedza chezuva dzimwe nguva chichigona kuita sebhuruu kana girini nekuda kwemhute.
Kubva pahukuru hwezvimedu zvemvura kusvika pakureba kwehurefu hwemwenje, marambi emumugwagwa e LED ndiwo akanakisa kana paine mamiriro ekunze asingaonekwe zvakanaka. Kupisa kwemavara uye dhizaini yemwenje zvinogadzira mamiriro ekunze akanaka emugwagwa panguva yekunaya kwemvura nemhute. Nekuvandudza kuoneka kwemwenje, marambi emumugwagwa e LED anochengetedza migwagwa yakachengeteka mumvura ine mhute nenzvimbo dzine mhute.
Kana uchifarira mwenje wemugwagwa we LED, gamuchira kuti ubate mugadziri wemwenje wemugwagwa we LED TIANXIANG kuti akubatsire.verenga zvakawanda.
Nguva yekutumira: Nyamavhuvhu-02-2023