Te rangahau hou a te tīma o Te Whare Wānanga o Wuhan: kua piki ake te whai huatanga o te rama LED iti whero mā te 30%

Nō nā tata nei, i whakawhanakehia e te tīma a Zhou Shengjun i Te Whare Wānanga o Wuhan tētahi paparanga aukati au hou (SCBL) Schottky-contact, ka taea te whakarei ake i te horapa o te au i roto i te rohe hohe. Ā, ka whakapai ake i te whai huatanga o te tango mārama o te AlGaInP whero. Iti LED(LEE).

E whakaatu ana te hoahoa i runga ake nei i (a) te hanganga o te taputapu, me (b) te tukanga hangahanga i runga i te hanganga poutū rama whero a AlGaInP. Iti Arataki me te SCBL. (c) SCBL me te (d) hanganga poutū rama whero e hangai ana ki te AlGaInP Mini LED tirohanga whatukaruāraingā whakaahua

I kī te kaiārahi rangahau a Shengjun Zhou i whakamahia e te tīma ngā āhuatanga whakapā Schottky i waenga i te indium tin oxide (ITO) me te p-GaP, tae atu ki ngā āhuatanga whakapā ohmic i waenga i te ITO me te p-GaP+ hei hanga i te SCBL, i whakaaturia mā te tikanga roa whakawhiti.

I kī a Zhou Shengjun ka taea e te SCBL te whakaiti i te piri o te iahiko huri noa i te irahiko p, me te whakatairanga i te horapa o te iahiko ōrite, ā, ka whakapai ake i te whai huatanga o te tango mārama o te AlGaInP whero Mini LED. Nā te whakanui ake i te horapa o te iahiko me te tango mārama, ka whakaatuhia e ngā Mini LED me te SCBL he tohatoha ōrite ake o te kaha o te mārama, he kaha ake te putanga whatu, me te pai ake o te pai o te irahiko o waho (EQE).

He whānuitia te whakamahinga o te AlGaInP whero Mini LED hei wāhanga nui o te rama tae-katoa. ngā whakaaturanga nā te mea he kanapa teitei, he iti te whakapaunga hiko, he roa hoki te ora ratonga.

Heoi, ko te kapi o te iahiko i te hiko p ka hua ake te tohatoha iahiko kāore i te ōrite i roto i te rohe hohe. Hei tāpiri, nā te mea ko te nuinga o ngā photon e hangaia ana i roto i te rohe hohe ka mimitihia, ka whakaatahia rānei e te hiko p whakarewa koretake, he iti te pai o te tango māramatanga (LEE) o te Mini LED e hangai ana ki te AlgainP.

Hei whakaoti i tēnei raruraru, i whakaurua e ngā kairangahau te SCBL hei whakapai ake i te horapa o te iahiko me te tango māramatanga o ngā Mini LED e ahu mai ana i te AlgainP. Mā te whakamahi i ngā hononga Schottky i waenga i te ITO me te P-gap, ka taea e te SCBL te aukati i te piri o te iahiko ki te hiko p. Ka akiakihia te iahiko ki roto i te rohe hohe mā te paparanga whakapā P-GAP + ohmic hei karo i te mimiti me te whakaata o te māramatanga e te hiko p whakarewa koretake.

I whakaatuhia e ngā hua ka taea te whakanui ake i te whai huatanga matū ā-waho (EQE) o tētahi Mini LED e ahu mai ana i te AlGaInP mā te whakamahi i te SCBL tae atu ki te 31.8% i te iahiko o te 20mA ki te whakataurite ki tētahi Mini LED e ahu mai ana i te AlGaInP kāore he SCBL. Nō reira, e matapaetia ana ka whakamahia te hangarau SCBL ki te whakaputa papatipu o tētahi Mini LED whero whai hua e ahu mai ana i te AlgainP a muri ake nei.

He mea tika kia mōhiotia kua tukuna hoki e te tīma Zhou Shengjun o Te Whare Wānanga o Wuhan ētahi hua rangahau LED hou. Hei tauira, i roto i te mara o ngā LED ultraviolet hōhonu, i whakauruhia e te tīma te hononga kauhanga tino angiangi e ahu mai ana i te Algan (26 nm) i roto i te LED ultraviolet hōhonu, i whakanui ake i te whai huatanga o te hurihanga hiko-whatu o te LED ultraviolet hōhonu mā te 5.5%.

I roto i te mara o te Mini LED, i whakapai ake te tīma i te mahi a ngā maramara Mini LED hurihuri kikorangi me te kakariki mā te whakamahi i te Full-angle Distributed Bragg Reflector (DBR). I raro i te āhuatanga o te iahiko werohanga 10mA, ka piki ake te mana putanga whatu o te Mini LED kikorangi me te kakariki i runga i te ITO/DBR mā te 7.7% me te 7.3%, ia.