All-solution processed polymer light-emitting diodes with air stable metal-oxide electrodes

Abstract

Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. We present an all-solution processed polymer light-emitting diode (PLED) using spincoated zinc oxide (ZnO) and vanadium pentoxide (V 2 O 5 ) as electron and hole injecting contact, respectively. We compare the performance of these devices to the standard PLED design using PEDOT:PSS as anode and Ba/Al as cathode. We show that the all-solution processed PLEDs have an equal performance as compared to the standard design directly after fabrication. However, the ambient stability of the PLEDs with spincoated transition metal oxide electrodes is exceptionally good in comparison to the standard design.

Efficient and stable single-layer organic light-emitting diodes based on thermally activated delayed fluorescence

“…These black spots are usually associated with oxidation or delamination of the cathode [34][35][36]. The black spots are still comparatively small, considering that complete device failure after a day of storage in air has been reported for some OLEDs [36,37]. After 5 days of storage in air, the black spots have grown in size, although 95% of the area still emits light.…”

Triangular-shaped zinc oxide nanoparticles enhance the device performances of inverted OLEDs

“…The luminous efficiency-current density characteristics show an efficient charge injection for this specific combination of emissive polymer and contacts. In a recent study [59], holes that are injected from the anode get trapped at the ZnO/polymer interface. The resulting electric field enhances the injection of electrons from the ZnO in the polymer, explaining the decrease in turn-on voltage.…”

Cost, energy and emissions assessment of organic polymer light-emitting device architectures

“…Additionally, comparisons are made with the more ubiquitous, commercial-scale, blue inorganic LED device. As discussed earlier, the inverted P-OLED architectures increase the operational lifetime and the top-emitting P-OLED architectures increase the electrical-to-optical power conversion efficiency (i.e., luminous efficacy) [3,8,23].…”

“…thatare primarilycomposed of carbon and hydrogen). However, current small-molecule OLEDs on the market are fabricated under high vacuum using thermal deposition, thus making the fabrication process expensive [1][2][3][4][5][6][7][8][9]. Therefore, low-cost, large-scale fabrication options are needed to make OLED technologies more marketable.P-OLEDs are an emerging sub-section of OLED technologies that are more amenable to solution-based processing which may enable more straight-forward, vacuum-free fabricationof the devices and, hence, lower cost and lower process energy consumption [2,[10][11][12][13].…”