Gẹgẹbi ofin Stokes, awọn ohun elo le ni itara nikan nipasẹ ina agbara giga ati ki o tan ina agbara kekere.Ni awọn ọrọ miiran, awọn ohun elo le ṣe itusilẹ gigun gigun ati ina igbohunsafẹfẹ kekere nigbati itara nipasẹ gigun kukuru ati ina igbohunsafẹfẹ giga.
Ni ilodi si, luminescence upconversion ntokasi si awọn ohun elo ti wa ni yiya nipasẹ ina pẹlu kekere agbara ati ki o tan imọlẹ pẹlu ga agbara.Ni awọn ọrọ miiran, ohun elo naa n tan ina pẹlu gigun kukuru ati igbohunsafẹfẹ giga nigbati itara nipasẹ ina pẹlu gigun gigun ati igbohunsafẹfẹ kekere.
Titi di isisiyi, imupadabọ luminescence ti waye ninu awọn agbo ogun doped pẹlu awọn ions aiye toje, nipataki fluoride, oxide, sulfur compounds, fluorine oxides, halides, ati bẹbẹ lọ.
NaYF4 jẹ ohun elo sobusitireti pẹlu ṣiṣe luminescence iyipada ti o ga julọ.Fun apẹẹrẹ, nigbati NaYF4: Er, Yb, ie, ytterbium ati erbium jẹilopo-doped,Er n ṣiṣẹ bi oluṣeto ati Yb bi oluṣeto.
Akoko ifiweranṣẹ: Oṣu Kẹrin Ọjọ 21-2021