摘要:
An electroluminescence (EL) device containing a number of layers, including two electrodes and positioned between the electrodes a mixed region, a hole transport region, and an electron transport region, wherein the mixed region contains, for example, biphenyl TPD, an electron transport compound and a luminescent compound.
摘要:
An organic light emitting device containing (i) an anode or a first electrode; (ii) a hole transport layer containing, for example, a mixture of a porphyrin and a hole transport material (iii) a mixed region containing a mixture of (1) a hole transport material, and (2) an electron transport material; (iv) a cathode or second electrode, and wherein the organic light emitting device may further contain at least one of (v) an electron transport region interposed between the mixed region and the cathode; and (vi) a thermal protective element coated on one of the anode and cathode.
摘要:
An organic fight emitting device (OLED) will have multiple capping layers on an electrode to provide a passivation region to prevent formation of dark spots. The passivation capping layers are, in sequence from the electrode, a first dielectric material layer, a metal or metal alloy layer with a work function of less than 4 eV, and a second dielectric protective layer.
摘要:
A device includes: an anode; a cathode; and a luminescent region between the cathode and the anode, wherein the luminescent region includes an anthracene derivative compound and a triazine derivative compound.
摘要:
An electroluminescent device containing a number of layers with a mixed region of a hole transport compound, and an electron transport compound, and hole and electron transport regions.
摘要:
An organic light emitting device (OLED) has a thick (100 to 250 nanometers) porphyrin buffer layer between the anode and the luminescent region. The thick porphyrin buffer layer in the OLED results in a small increase in device operating voltage, reduces the possibility of OLED shorting and can improve color purity in blue emitting OLEDs due to its significant optical absorption in the red range.
摘要:
An electroluminescent device including a first electrode, a second electrode, and situated between the electrodes a carbazole layer of the formula wherein R1, R2, R3, and R4 are independently selected from the group consisting of a hydrocarbyl, and wherein Ar is an aryl.