225 results about "Electroluminescence spectra" patented technology

A sandwich device was prepared by electrodeposition of an insoluble layer of oligomerized tris(4-(2-thienyl)phenyl)amine onto conducting indium-tin oxide coated glass, spin coating the stacked platinum compound, tetrakis(p-decylphenylisocyano)platinum tetranitroplatinate, from toluene onto the oligomer layer, and then coating the platinum complex with aluminum by vapor deposition. This device showed rectification of current and gave electroluminescence. The electroluminescence spectrum (mumax=545 nm) corresponded to the photoluminescence spectrum of the platinum complex. Exposure of the device to acetone vapor caused the electroemission to shift to 575 nm. Exposure to toluene vapor caused a return to the original spectrum. These results demonstrate a new type of sensor that reports the arrival of organic vapors with an electroluminescent signal. The sensor comprises (a) a first electrode; (b) a hole transport layer formed on the first electrode; (c) a sensing / emitting layer formed on the hole transport layer, the sensing / emitting layer comprising a material that changes color upon exposure to the analyte vapors; (d) an electron conductor layer formed on the sensing layer; and (e) a second electrode formed on the electron conductor layer. The hole transport layer emits light at a shorter wavelength than the sensing / emitting layer and at least the first electrode comprises an optically transparent material.

An organic light-emitting display (OLED) device is disclosed that includes: a red organic light-emitting diode comprising a red organic emission layer; a green organic light-emitting diode comprising a green organic emission layer; and a blue organic light-emitting diode comprising a blue organic emission layer. The difference between a peak of a photoluminescence spectrum of the red organic emission layer and a peak of an electroluminescence spectrum of the red organic light-emitting diode is less than 2 nm, the difference between a peak of a PL spectrum of the green organic emission layer and a peak of an EL spectrum of the green organic light-emitting diode is less than 2 nm, and the difference between a peak of a PL spectrum of the blue organic emission layer and a peak of an EL spectrum of the blue organic light-emitting diode is 4 nm or greater.

An organic light-emitting element includes a first electrode, a second electrode, and at least one organic compound layer disposed between the first electrode and the second electrode. The organic compound layer includes a light-emitting layer containing a light-emitting material and being configured to emit light toward the first electrode and the second electrode. The light emitted toward the first electrode is reflected from a reflection plane located at the first electrode to cause interference with the light emitted toward the second electrode. The interference provides an interference intensity distribution having a maximum peak at a wavelength λ1. The light-emitting material of the light-emitting layer exhibits a photoluminescence spectrum having a maximum peak at a wavelength λ2. The organic light-emitting element produces an electroluminescence spectrum having a maximum peak at a wavelength λ3. These wavelengths satisfy the relationships: λ2≠λ3 and |λ2−λ3|<|λ2−λ1|.