Tare da haɓaka nunin LED, ƙarin fasaha da aikace-aikacen nunin LED an gano su.
Anan ina so in yi magana da wasu sabbin fasahohinLED nuni.Za mu iya koyon yanayin nunin LED daga waɗannan sabbin fasahohin.Wannan zai taimaka mana mu yanke shawara mafi kyau.
An sami babban ci gaba a fagen bincike na OLED kunkuntar
A ranar 14 ga Oktoba, Nature Photonics ta buga kan layi sabbin nasarorin da ƙungiyar Farfesa Yang Chuluo na Jami'ar Shenzhen ta samu a fannin binciken OLED.
Kayayyakin jinkirin da aka kunna ta thermally (TADF) sun zama wurin bincike a cikin kayan samar da hasken wutan lantarki (OLED) a cikin shekaru goma da suka gabata saboda ikonsu na cimma ingantaccen ƙididdige ƙididdigewa 100% na ciki.A cikin 'yan shekarun nan, abubuwa da yawa da aka kunna jinkirin haske mai haske (MR-TADF) suna da babban yuwuwar aikace-aikacen a cikin nunin ma'ana mai girma saboda halayen kunkuntar hayakin su.
Koyaya, juzu'in tsalle-tsalle na tsaka-tsaki (kRISC) na kayan TADF da yawa yana jinkirin gabaɗaya, yana haifar da haɓakar ingancin na'urorin da ke fitar da haske a babban haske, wanda ya sa ya yi wahala ga na'urorin OLED masu dacewa su sami babban inganci. da tsabta mai launi.da ƙananan juzu'i.Domin warware mahimmin matsalar ƙaddamar da ingantaccen aiki, ƙungiyar Farfesa Yang Chuluo na Jami'ar Shenzhen sun haɗa BNSSeSe ta hanyar shigar da sinadarin selenium mai nauyi wanda ba na ƙarfe ba a cikin tsarin sauti da yawa, kuma sun yi amfani da tasirin atom mai nauyi don haɓaka haɗin gwiwa. tsakanin maɗaukaki ɗaya da uku (S1 da T1) na kayan., yana haifar da babban kRISC (2.0 ×106 s-1) da ingancin ƙima na photoluminescence (100%).
Ingantacciyar ƙididdiga ta waje na na'urar OLED mai tururi wanda aka shirya ta amfani da BNSeSe azaman kayan baƙo na Layer mai fitar da haske ya kai 36.8%, kuma ana danne ingantaccen aikin sa.Ƙimar ƙididdiga ta waje har yanzu tana da girma kamar 21.9% a m-² haske, wanda yayi daidai da kayan phosphorescent kamar iridium da platinum.Bugu da ƙari, a karon farko, sun ƙirƙira na'urorin OLED superfluorescent ta amfani da nau'ikan nau'in TADF da yawa a matsayin masu faɗakarwa.Na'urorin LED masu haske.Na'urar tana da matsakaicin ƙarfin jimla na waje na 40.5% da ƙarfin jimla na waje na 32.4% a 1000 cd m-² haske.Ko da a 10,000 cd m-² haske, ƙimar ƙididdigewa na waje har yanzu yana da girma kamar 23.3%, iyakar ƙarfin ƙarfin aiki ya wuce 200 lm W-1, kuma matsakaicin haske yana kusa da 200,000 cd m-².
Wannan aikin yana ba da sabon ra'ayi da ingantacciyar hanya don magance matsalar jujjuyawar aiki na na'urorin lantarki na MR-TADF, wanda ke da babban buƙatun aikace-aikacen a cikin babban nuni.An buga sakamakon da ke da alaƙa a cikin sanannen mujallar Nature Photonics na duniya a ƙarƙashin taken "Ingantacciyar hanyar haɗin gwiwar selenium ta TADF OLEDs tare da rage juzu'i" ("Nature Photonics", tasirin tasirin 39.728, gundumar JCR 1 na Kwalejin Kimiyya ta kasar Sin, matsayi. na farko a fagen gani).
USTC ta sami ci gaba mai mahimmanci a fagen binciken perovskite LED da na'urar bincike mai haske
Abubuwan Perovskite suna da mahimman buƙatun aikace-aikacen a cikin filayen hasken rana, LEDs, da masu gano hoto saboda kyawawan kaddarorin su na optoelectronic.Ingancin samuwar fina-finai da microstructure na fina-finai na perovskite suna taka muhimmiyar rawa wajen aiwatar da na'urorin optoelectronic.Nanostructure da aka kafa a saman perovskite yana ƙara watsawa na photons a saman fim din na bakin ciki, yana samun nasara a cikin iyakar ingancin na'urorin LED na perovskite.An buga sakamakon da ke da alaƙa a cikin Manyan Materials a ƙarƙashin taken "Cin Cire Ƙirar Ƙarfafawar Perovskite Light-Emitting Diodes tare da Nanostructures Formed Artificially".
LEDs Perovskite suna da fa'idodin tsayin raƙuman fitar da iska, kunkuntar watsawar rabin-ƙoli, da shiri mai sauƙi.Ingancin na'urar na LEDs perovskite a halin yanzu an iyakance shi ta hanyar haɓakar haɓakar haske.Don haka, haɓaka haɓakar haɓakar hasken na'urar hanya ce mai mahimmancin bincike.A cikiLEDs na Organic da LEDs dige ƙididdiga, Ana buƙatar ƙarin yadudduka na hakar haske gabaɗaya don haɓaka haɓakar photon, kamar yin amfani da tsararrun ruwan tabarau na tashi-ido, nanostructures na asu-ido na biomimetic, da ƙananan yadudduka haɗaɗɗen haɗin gwiwa.Koyaya, waɗannan hanyoyin suna sa tsarin ƙirƙira na'urar ya fi rikitarwa kuma yana haɓaka farashin masana'anta.
Kungiyar bincike ta Xiao Zhengguo ta ba da rahoton wata hanyar da za ta iya samar da wani tsari da aka zayyana ba tare da bata lokaci ba a saman fina-finan siraren perovskite.da inganta haɓakar haskeingancin perovskite
LEDs ta hanyar ƙara photon watsawa a saman fim din bakin ciki.A lokacin shirye-shiryen fim, ta hanyar sarrafa lokacin zama na anti-solvent a kan fuskar fim, ana iya sarrafa tsarin crystallization na perovskite, wanda ya haifar da wani abu mai laushi.Don fina-finai tare da matsakaicin kauri na 1.5 μm, ana iya ci gaba da sarrafa ƙarancin saman daga 15.3 nm zuwa 241 nm, kuma hazo yana daidai da haɓaka daga 6% zuwa fiye da 90%.
Amfana daga karuwa a cikin watsawa na photon a kan fuskar fim, ingantaccen haɓakar hasken wutar lantarki na LEDs perovskite tare da tsarin da aka tsara ya karu daga 11.7% zuwa 26.5% na LEDs perovskite na planar, da kuma daidaitattun na'urori masu dacewa.LEDskuma ya karu daga kashi 10%.% ya karu sosai zuwa 20.5%.Ayyukan da ke sama suna ba da sabuwar hanya don ƙirƙirar nanostructures masu fitar da haske don na'urorin optoelectronic perovskite.Fim ɗin perovskite tare da tsarin micro-nano yayi kama da yanayin da aka ƙera a cikin ƙwayoyin hasken rana na silicon crystalline, wanda ake sa ran inganta haɓakar haɓakar haske da aikin ƙwayoyin rana na perovskite.
Lokacin aikawa: Nuwamba-07-2022