Quantum dots uye encapsulation
Sechinyorwa nano zvinhu, iyo quantum dots (QDs) ine hunyanzvi hwekuita nekuda kwehukuru hwayo.Chimiro chechinyorwa ichi chine denderedzwa kana quasi-spherical, uye dhayamita yaro inotangira pa2nm kusvika 20nm.QDs ine zvakawanda zvakanakira, zvakadai seyakakura excitation spectrum, nhete emission spectrum, yakakura Stokes kufamba, refu fluorescent lifetime uye yakanaka biocompatibility, kunyanya emission spectrum yeQDs inogona kuvhara iyo yese inooneka mwenje siyana kuburikidza nekuchinja saizi yayo.
Pakati peakasiyana maQDs luminescent zvinhu, iwo Ⅱ~Ⅵ QDs aisanganisira CdSe akaiswa kune akawanda maapplication nekuda kwekukurumidza kwavo kukura.Iyo hafu-yepamusoro upamhi hweiyo Ⅱ~Ⅵ QDs inotangira pa30nm kusvika 50nm, inogona kunge yakaderera kupfuura 30nm mumamiriro akakodzera ekugadzirisa, uye fluorescence quantum goho ravo rinosvika ku100%.Nekudaro, kuvepo kweCd kwakaganhurira kuvandudzwa kweQDs.Iyo Ⅲ~Ⅴ QDs dzisina Cd dzakagadzirwa zvakanyanya, iyo fluorescence quantum goho rechinhu ichi chinenge 70%.Iyo hafu-yepamusoro upamhi hwegirini chiedza InP/ZnS i40~50 nm, uye dzvuku InP/ZnS ingangoita 55 nm.Iyo pfuma yechinhu ichi inoda kuvandudzwa.Munguva pfupi yapfuura, iyo ABX3 perovskites iyo isingade kuvhara iyo shell chimiro yakakwezva kutarisisa kwakawanda.Iyo emission wavelength yavo inogona kugadziriswa muchiedza chinooneka nyore.Iyo fluorescence quantum goho ye perovskite inopfuura 90%, uye hafu-peak width inenge 15nm.Nekuda kweruvara gamut yeQDs luminescent zvinhu zvinogona kusvika 140% NTSC, rudzi urwu rwezvishandiso rune maapplication makuru muine luminescent mudziyo.Iwo maapplications makuru aisanganisira kuti pane isingawanzo pasi phosphor kuburitsa mwenje ine mavara mazhinji uye mwenje mutete-firimu maelectrodes.
QDs inoratidza iyo yakazara mwenje ruvara nekuda kwechinhu ichi inogona kuwana iyo spectrum nechero wave kureba mumunda wekuvhenekesa, iyo hafu yehupamhi hwehurefu hwemafungu yakadzikira kupfuura 20nm.Iwo maQD ane akawanda maitiro, ayo aisanganisira anochinjika emitting ruvara, nhete emission spectrum, yakakwira fluorescence quantum goho.Iwo anogona kushandiswa kukwirisa spectrum muLCD backlights uye kuvandudza ruvara rwekuratidzira simba uye gamut yeLCD.
Encapsulation nzira dzeQDs ndedzinotevera:
1）Pa-chip: iyo yechinyakare fluorescent poda inotsiviwa neQDs luminescent zvinhu, inova ndiyo huru encapsulation nzira dzeQDs mumunda wekuvhenekesa.Kubatsira kweichi pane chip ishoma huwandu hwezvinhu, uye iyo yakashata zvinhu zvinofanirwa kuve nekugadzikana kwakanyanya.
2）Pamusoro-pamusoro: chimiro chinonyanya kushandiswa mune backlight.Iyo firimu yemaziso inogadzirwa neQDs, iri pamusoro pe LGP muBLU.Zvisinei, mari yakakwirira yenzvimbo huru yefirimu yemaziso inoderedza kushandiswa kwakawanda kweiyi nzira.
3) Pa-kumucheto: iyo QDs zvinhu zvakavharirwa kuti zvibvise, uye zvinoiswa padivi pe LED strip uye LGP.Iyi nzira yakaderedza mhedzisiro yekupisa uye optical radiation iyo inokonzerwa neblue LED uye QDs luminescent zvinhu.Zvakare, kushandiswa kwezvinhu zveQDs kwakadzikira zvakare.
