15-02-2018 дата публикации
Номер: US20180047928A1
Принадлежит:
A light-emitting device is provided. The light emitting device includes a first electrode, second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode. The emission layer includes at least one perovskite compound, a first quantum dot, and a second quantum dot. The first quantum dot and the second quantum dot may be different from each other. 1. A light-emitting device comprising:a first electrode;a second electrode facing the first electrode; andan emission layer between the first electrode and the second electrode,wherein the emission layer comprises at least one perovskite compound represented by Formula 1, a first quantum dot, and a second quantum dot, and {'br': None, 'sub': '3', '[A][B][X]\u2003\u2003Formula 1'}, 'the first quantum dot and the second quantum dot are different from each otherwherein, in Formula 1,A is at least one monovalent organic cation, at least one monovalent inorganic cation, or any combination thereof,B is at least one divalent inorganic cation, andX is at least one monovalent anion.2. The light-emitting device of claim 1 , wherein:{'sub': 1', '2', '3', '4', '1', '2', '3', '4', '1', '2', '3', '4', '1', '2', '3', '4', '1', '2', '3', '4', '5, 'sup': +', '+', '+', '+', '+', '+', '+', '+', '+', '+', '+, 'A is (RRRRN), (RRRRP), (RRRRAs), (RRRRSb), (RRN═C(R)—NRR), a monovalent cation of a substituted or unsubstituted nitrogen-containing 5-membered ring, a monovalent cation of a substituted or unsubstituted nitrogen-containing 6-membered ring, Li, Na, K, Rb, Cs, Fr, or any combination thereof, and'}{'sub': 1', '5', '1', '60', '2', '60', '2', '60', '1', '60', '6', '60', '1', '2', '3, 'Rto R, a substituent of the monovalent cation of the substituted nitrogen-containing 5-membered ring, and a substituent of the monovalent cation of the substituted nitrogen-containing 6-membered ring are each independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a substituted ...
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