A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode and including an emission layer, wherein the interlayer includes a heterocyclic compound of Formula 1:

A.sub.1B.sub.1].sub.n1  Formula 1

wherein, in Formula 1, the variables are defined herein.

Structures and methods for manufacturing photovoltaic devices by forming perovskite layers and perovskite precursor layers using vapor transport deposition (VTD) are described.

The present invention provides an organic thin film light-emitting element having improved light-emitting efficiency and durable service life. The compound of the present invention has the structure represented by general formula (1) below. In general formula (1), Ar.sup.1 is an aromatic group having a specific structure, and Ar.sup.2 is a separate aromatic group having a specific structure. n is an integer of 1 or 2, and p is an integer of 1 or 2. However, n+p=3. When n is 2, each Ar.sup.1 may be the same or different, and when p is 2, each Ar.sup.2 may be the same or different. However, Ar.sup.1 and Ar.sup.2 are not the same group. ##STR00001##

An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a polycyclic compound represented by Formula 1 and shows high emission efficiency and excellent color reproducibility. ##STR00001##

A composition of materials including a first compound having a structure according to Formula I

##STR00001##

An organometallic compound represented by Formula 1A:

##STR00001## wherein, in Formula 1A, groups and variables are the same as described in the specification.

An organic light-emitting device including a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a host, a dopant, and a sensitizer, the host does not include a metal atom, the dopant emits light, and the light has a decay time of about 100 nanoseconds or less, and the sensitizer includes an organometallic compound represented by one selected from Formulae 1 and 2 described in the specification.

The present invention relates to an organic electronic device comprising an anode layer, a cathode layer and a hole injection layer, wherein the hole injection layer is arranged between the anode layer and the cathode layer and wherein the hole injection layer comprises a hole transport compound and a metal complex.

The present invention relates to an organic electronic device comprising an anode layer, a cathode layer and a hole injection layer, wherein the hole injection layer is arranged between the anode layer and the cathode layer and wherein the hole injection layer comprises a hole transport compound and a metal complex.

An organic molecule (in, e.g., optoelectronic devices) has a structure of Formula I:

##STR00001##

wherein:
R.sup.I, R.sup.II, R.sup.III, R.sup.IV, R.sup.V, R.sup.VI, R.sup.VII, R.sup.VIII, R.sup.IX, R.sup.X, R.sup.XI, R.sup.A, R.sup.B, R.sup.C and R.sup.D are each independently selected from the group consisting of:
hydrogen, deuterium, halogen,
C.sub.1-C.sub.12-alkyl,
wherein optionally one or more hydrogen atoms are independently substituted by R.sup.5; C.sub.6-C.sub.18-aryl,
wherein optionally one or more hydrogen atoms are independently substituted R.sup.5; and C.sub.3-C.sub.15-heteroaryl,
wherein optionally one or more hydrogen atoms are independently substituted R.sup.5; any adjacent two from among R.sup.I, R.sup.II, R.sup.III, R.sup.IV, R.sup.V, R.sup.VI, R.sup.VII, R.sup.VIII, R.sup.IX, R.sup.X, R.sup.XI, R.sup.A, R.sup.B, R.sup.C, R.sup.D may form a monocyclic ring system with 5 to 8 C-atoms, and
wherein, optionally, each hydrogen can independently from each other be substituted by R.sup.6; and
at least R.sup.A and R.sup.B together form a monocyclic ring system with 5 to 8 C-atoms.