An organometallic compound is represented by Formula 1. A light-emitting device includes a first electrode, a second electrode facing the first electrode, an interlayer disposed between the first electrode and the second electrode and including an emission layer, and at least one organometallic compound represented by Formula 1. An electronic apparatus includes the light-emitting device.

Disclosed herein are a novel organometallic compound and an organic light-emitting diode including same. More specifically, an organometallic compound represented by [Chemical Formula 1] and an organic light-emitting diode including same are provided.

Disclosed herein are a novel organometallic compound and an organic light-emitting diode including same. More specifically, an organometallic compound represented by [Chemical Formula 1] and an organic light-emitting diode including same are provided.

Provided is an organometallic compound of Chemical Formula 1: ##STR00001## wherein, in Chemical Formula 1: X is O, S, NH, or Se; R.sub.1 is —Si(R.sub.a)(R.sub.b)(R.sub.c), where R.sub.a, R.sub.b, and R.sub.c are hydrogen, deuterium, or a substituted or unsubstituted C.sub.1-10 alkyl; R.sub.2, R.sub.3 and R.sub.4 are each independently hydrogen, deuterium, halogen, cyano, amino, a substituted or unsubstituted C.sub.1-60 alkyl, a substituted or unsubstituted C.sub.1-60 haloalkyl, a substituted or unsubstituted C.sub.1-60 alkoxy, a substituted or unsubstituted C.sub.1-60 haloalkoxy, a substituted or unsubstituted C.sub.3-60 cycloalkyl, a substituted or unsubstituted c.sub.2-60 alkenyl, a substituted or unsubstituted C.sub.6-60 aryl, a substituted or unsubstituted C.sub.6-60 aryloxy, or a substituted or unsubstituted C.sub.2-60 heterocyclic group containing one or more heteroatoms selected from the group consisting of N, O and S; a and b are each 0 and 1, or 1 and 0, respectively; and n is 1 or 2,
and an organic light emitting device including the same.

Provided is an organometallic compound of Chemical Formula 1: ##STR00001## wherein, in Chemical Formula 1: X is O, S, NH, or Se; R.sub.1 is —Si(R.sub.a)(R.sub.b)(R.sub.c), where R.sub.a, R.sub.b, and R.sub.c are hydrogen, deuterium, or a substituted or unsubstituted C.sub.1-10 alkyl; R.sub.2, R.sub.3 and R.sub.4 are each independently hydrogen, deuterium, halogen, cyano, amino, a substituted or unsubstituted C.sub.1-60 alkyl, a substituted or unsubstituted C.sub.1-60 haloalkyl, a substituted or unsubstituted C.sub.1-60 alkoxy, a substituted or unsubstituted C.sub.1-60 haloalkoxy, a substituted or unsubstituted C.sub.3-60 cycloalkyl, a substituted or unsubstituted c.sub.2-60 alkenyl, a substituted or unsubstituted C.sub.6-60 aryl, a substituted or unsubstituted C.sub.6-60 aryloxy, or a substituted or unsubstituted C.sub.2-60 heterocyclic group containing one or more heteroatoms selected from the group consisting of N, O and S; a and b are each 0 and 1, or 1 and 0, respectively; and n is 1 or 2,
and an organic light emitting device including the same.

A process for detecting oil or lubricant contamination in the production of an article by adding a Stokes-shifting taggant to an oil or lubricant of a machine utilized to produce the article or a component thereof, irradiating the articles produced with a first wavelength of radiation, and monitoring the articles for emission of radiation at a second wavelength. The taggant can be in the form of a composition containing a Stokes-shifting taggant, which absorbs radiation at a first wavelength and emits radiation at a second wavelength, different from said first wavelength, dissolved or dispersed in an oil or lubricant.

A process for detecting oil or lubricant contamination in the production of an article by adding a Stokes-shifting taggant to an oil or lubricant of a machine utilized to produce the article or a component thereof, irradiating the articles produced with a first wavelength of radiation, and monitoring the articles for emission of radiation at a second wavelength. The taggant can be in the form of a composition containing a Stokes-shifting taggant, which absorbs radiation at a first wavelength and emits radiation at a second wavelength, different from said first wavelength, dissolved or dispersed in an oil or lubricant.

An organic electroluminescence device comprising: a cathode, an anode, and at least one organic layer disposed between the cathode and the anode, wherein at least one layer of the at least one organic layer comprises a compound represented by the following formulas (1-1) and (1-3) or a compound represented by the following formulas (1-2) and (1-3). ##STR00001##

An organic electroluminescence device comprising: a cathode, an anode, and at least one organic layer disposed between the cathode and the anode, wherein at least one layer of the at least one organic layer comprises a compound represented by the following formulas (1-1) and (1-3) or a compound represented by the following formulas (1-2) and (1-3). ##STR00001##

The present disclosure provides an organic light emitting diode comprising a first electrode; a second electrode facing the first electrode; and an emitting material layer. The emitting material layer includes a p-type host, a n-type host and a phosphorescent dopant and positioned between the first electrode and the second electrode, wherein a first energy level of a HOMO of the p-type host is equal to or lower than a second energy level of a HOMO of the n-type host, and a difference between an energy level of a singlet state of the n-type host and an energy level of a triplet state of the n-type host is greater than 0.3 eV and smaller than 0.5 eV.