An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer. The organic layer includes a first compound represented by Formula 1 and a second compound represented by Formula 2. The first compound may be included in an emission layer, and the second compound may be included in an electron transport region. ##STR00001##

The present invention relates to a multifunctional optoelectronic device (10) comprising at least one photo-responsive perovskite light-emitting diode (LED, 1) arranged to alternatingly operate in emission mode and sensing mode. The at least one perovskite LED (1) comprises a cathode (2), an electron transport layer (ETL, 3) having a lowest unoccupied molecular orbital (LUMO) level and a highest occupied molecular orbital (HOMO) level, a perovskite layer (4) having a conduction band (CB) and a valence band (VB), a hole transport layer (HTL, 5) having a LUMO level and a HOMO level, and an anode (6). The LUMO level of the ETL (3) is lower than the CB bottom of the perovskite layer, and the HOMO level of the HTL (5) is higher than the VB top of the perovskite layer (4).

Provided are a perovskite optoelectronic device containing an exciton buffer layer, and a method for manufacturing the same. The optoelectronic device of the present inventive concept comprises: an exciton buffer layer in which a first electrode, a conductive layer disposed on the first electrode and comprising a conductive material, and a surface buffer layer containing fluorine-based material having lower surface energy than the conductive material are sequentially deposited; a photoactive layer disposed on the exciton buffer layer and containing a perovskite photoactive layer; and a second electrode disposed on the photoactive layer. Accordingly, a perovskite is formed with a combined FCC and BSS crystal structure in a nanoparticle photoactive layer. The present inventive concept can also form a lamellar or layered structure in which an organic plane and an inorganic plane are alternatively deposited; and an exciton can be bound by the inorganic plane, thereby being capable of expressing high color purity.