Okwu mmalite: Chen Shuming na ndị ọzọ sitere na Mahadum Sayensị na Nkà na Ụzụ nke Ndịda ewepụtala usoro ejikọtara ọnụ ọgụgụ ọkụ na-emitting diode site na iji transperent conductive indium zinc oxide dị ka etiti electrode. Diode nwere ike ịrụ ọrụ n'okpuru okirikiri mgbanwe dị ugbu a na nke na-adịghị mma, yana arụmọrụ mpụta nke 20.09% na 21.15%, n'otu n'otu. Na mgbakwunye, site na ijikọ ọtụtụ usoro ejikọrọ ngwaọrụ, panel nwere ike na-anya ozugbo site n'ụlọ AC ike na-enweghị mkpa mgbagwoju backend sekit. N'okpuru draịva nke 220 V / 50 Hz, ike ịrụ ọrụ nke plọg na-acha uhie uhie na panel play bụ 15.70 lm W-1, na nchapụta na-agbanwe agbanwe nwere ike iru 25834 cd m-2.
Igwe ọkụ na-enwu ọkụ (LEDs) aghọwo teknụzụ ọkụ ọkụ na-emekarị n'ihi arụmọrụ dị elu ha, ogologo ndụ ha, uru nchekwa siri ike na gburugburu ebe obibi, na-egbo mkpa ụwa maka ịrụ ọrụ ike na nkwado gburugburu ebe obibi. Dị ka semiconductor pn diode, LED nwere ike ịrụ ọrụ naanị n'okpuru draịva nke isi iyi dị ugbu a dị ala (DC). N'ihi ịgbanye ụgwọ ịgba ụgwọ na-aga n'ihu na-aga n'ihu, ụgwọ na kpo oku Joule na-agbakọta n'ime ngwaọrụ ahụ, si otú a belata nkwụsi ike arụmọrụ nke LED. Tụkwasị na nke ahụ, ọkụ ọkụ zuru ụwa ọnụ na-adabere na elu-voltage alternating current, na ọtụtụ ngwa ụlọ dị ka ọkụ ọkụ LED enweghị ike iji elu voltaji alternating current. Ya mere, mgbe ọkụ ọkụ ụlọ na-ebugharị LED, a na-achọ ihe ntụgharị AC-DC ọzọ ka ọ bụrụ onye na-emekọrịta ihe iji gbanwee ike AC voltaji dị elu ka ọ bụrụ ike DC dị ala. Ihe ntụgharị AC-DC na-ahụkarị gụnyere ihe ngbanwe maka ibelata voltaji mains na sekit rectifier maka imezi ntinye AC (lee eserese 1a). Ọ bụ ezie na ntughari arụmọrụ nke ọtụtụ ndị ntụgharị AC-DC nwere ike iru ihe karịrị 90%, a ka nwere ọnwụ ike n'oge usoro ntụgharị. Na mgbakwunye, iji dozie nchapụta nke LED, a ga-eji sekit ịnya ụgbọ ala raara onwe ya nye iji dozie ọkụ ọkụ DC ma nye ihe dị mma ugbu a maka LED (lee foto mgbakwunye 1b).
Ịtụkwasị obi nke sekit ọkwọ ụgbọ ala ga-emetụta ịdịte aka nke ọkụ LED. Ya mere, iwebata ndị ntụgharị AC-DC na ndị ọkwọ ụgbọ ala DC ọ bụghị naanị na-ebute ụgwọ ndị ọzọ (na-agụta ihe dị ka 17% nke ọnụ ahịa oriọna LED zuru oke), mana na-abawanye oriri ike ma na-ebelata ịdịte aka nke oriọna LED. Ya mere, na-emepe emepe LED ma ọ bụ electroluminescent (EL) ngwaọrụ nwere ike na-anya ozugbo site ezinụlọ 110 V / 220 voltaji nke 50 Hz / 60 Hz na-enweghị mkpa mgbagwoju backend electronic ngwaọrụ bụ ukwuu na-achọsi ike.
N'ime iri afọ ole na ole gara aga, egosipụtala ọtụtụ ngwaọrụ AC chụpụrụ electroluminescent (AC-EL). Igwe eletrọnịkị AC nke a na-ahụkarị na-enwe oyi akwa fluorescent ntụ na-emitting sandwiched n'etiti akwa mkpuchi mkpuchi abụọ (Figure 2a). Ojiji nke mkpuchi mkpuchi na-egbochi injection nke ndị na-ebu ụgwọ mpụga, yabụ na ọ nweghị ugbu a na-agafe na ngwaọrụ ahụ. Ngwa ahụ nwere ọrụ nke capacitor, na n'okpuru ụgbọala nke ọkụ eletrik AC dị elu, eletrọn ndị a na-emepụta n'ime ya nwere ike ịdaba site na ebe a na-ejide ya ruo na oyi akwa ikuku. Mgbe ha nwetasịrị ike kinetic zuru oke, electrons na-adaba na etiti luminescent, na-emepụta excitons na ọkụ. N'ihi enweghị ike ịgbanye electrons site na mpụga electrodes, nchapụta na arụmọrụ nke ngwaọrụ ndị a dị ntakịrị ala, nke na-egbochi ngwa ha na mpaghara ọkụ na ngosi.
Iji kwalite arụmọrụ ya, ndị mmadụ ewepụtala AC ballasts eletrọnịkị nwere otu mkpuchi mkpuchi (lee foto mgbakwunye 2b). Na usoro a, n'oge mma ọkara okirikiri nke AC mbanye, a na-ebu ibu na-injected ozugbo n'ime emission oyi akwa si mpụga electrode; Enwere ike ịhụ nchapụta ọkụ nke ọma site na ijikọ ya na ụdị ọzọ nke na-ebu ụgwọ ewepụtara n'ime. Otú ọ dị, n'oge na-adịghị mma ọkara okirikiri nke AC mbanye, ndị injected ụgwọ na-ebu ga-ahapụ na ngwaọrụ na ya mere na-agaghị eme ka ìhè. dị ala karịa nke ngwaọrụ DC. Na mgbakwunye, n'ihi njirimara capacitance nke ngwaọrụ ahụ, arụmọrụ electroluminescence nke ngwaọrụ AC abụọ na-adabere ugboro ugboro, yana arụmọrụ kachasị mma na-enwetakarị n'ogo dị elu nke ọtụtụ kilohertz, nke na-eme ka ha sie ike dakọtara na ike ụlọ AC ọkọlọtọ na ala dị ala. ugboro ugboro (50 hertz / 60 hertz).
N'oge na-adịbeghị anya, mmadụ tụpụtara ngwaọrụ eletrọnịkị AC nke nwere ike ịrụ ọrụ na ugboro 50 Hz/60 Hz. Ngwaọrụ a nwere ngwaọrụ DC abụọ yiri ya (lee foto 2c). Site na mkpirisi eletriki ịgbanye elu electrodes nke ngwaọrụ abụọ ahụ na ijikọ electrodes coplanar ala na isi iyi ike AC, enwere ike ịgbanye ngwaọrụ abụọ ahụ ọzọ. Site na nlele sekit, a na-enweta ngwaọrụ AC-DC a site na ijikọ ngwaọrụ mbugharị na ngwaọrụ azụ n'usoro. Mgbe agbanwuru ngwaọrụ mbugharị, a na-agbanyụ ngwaọrụ azụ, na-eme dị ka resistor. N'ihi ọnụnọ nke nguzogide, arụmọrụ electroluminescence dị ntakịrị. Na mgbakwunye, ngwaọrụ AC na-enye ọkụ nwere ike ịrụ ọrụ na obere voltaji na enweghị ike ijikọ ya na ọkụ eletrik ụlọ 110 V/220 V ozugbo. Dịka egosiri na eserese 3 na mgbakwunye mgbakwunye 1, arụmọrụ (ịcha ọkụ na arụmọrụ ike) nke ngwaọrụ ike AC-DC nke a na-ebugharị voltaji AC dị elu dị ala karịa nke ngwaọrụ DC. Ka ọ dị ugbu a, ọ nweghị ngwaọrụ AC-DC nke ọkụ eletrik nwere ike ịkwọ ya ozugbo na 110 V/220 V, 50 Hz/60 Hz, ma nwee nnukwu arụmọrụ na ogologo ndụ.
Chen Shuming na ndị otu ya sitere na Mahadum Sayensị na Nkà na Ụzụ nke Ndịda ewepụtala usoro ejikọtara ọnụ ọgụgụ ọkụ na-emitting diode site na iji indium zinc oxide transperent dị ka electrode etiti. Diode nwere ike ịrụ ọrụ n'okpuru okirikiri mgbanwe dị ugbu a na nke na-adịghị mma, yana arụmọrụ mpụta nke 20.09% na 21.15%, n'otu n'otu. Na mgbakwunye, site na ijikọ multiple usoro ejikọrọ ngwaọrụ, panel nwere ike ozugbo chụpụrụ site ezinụlọ AC ike na-enweghị mkpa mgbagwoju backend sekit.N'okpuru mbanye nke 220 V / 50 Hz, ike arụmọrụ nke red plọg na play panel bụ 15.70. lm W-1, na nchapụta agbanwe agbanwe nwere ike iru 25834 cd m-2. Plọg emepụtara na egwuregwu quantum dot LED panel nwere ike iwepụta isi mmalite ọkụ, kọmpat, rụọ ọrụ nke ọma na kwụsiri ike nke ọkụ eletrik ụlọ AC nwere ike ịkwado ozugbo.
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Oge nzipu: Jan-14-2025