In PubMed’s research article, “Hermetic Seal of Organic Light Emitting Diode with Glass Frit,” advanced hermetic sealing techniques are presented as a powerful method for enhancing the lifespan and efficiency of Organic Light Emitting Diodes (OLEDs). This specific study achieved an impressive 1026-day OLED lifetime using hermetic encapsulation, with performance measured by PXI-1033 instrumentation.
The study highlighted the optimal characteristics for OLED performance, including a TPBi layer thickness of 20 nm, which contributed to a maximum luminance of 25,849 cd/m² at a current density of 1242 mA/cm². Key efficiency metrics included an external quantum efficiency (EQE) of 2.28%, a current efficiency (CE) of 7.20 cd/A, and a power efficiency (PE) of 5.28 lm/W, showing substantial performance enhancements of 17.2% in luminance, 0.89% in EQE, 42.1% in CE, and 41.9% in PE.
Further tests verified the robustness of this encapsulated OLED. The CIE color coordinates (0.32, 0.54) indicated a green OLED element with a wavelength of 532 nm. Reliability measures included a shear strain of 16 kgf and an impressive leakage rate of 8.92 × 10⁻⁹ mbar/s, meeting the rigorous MIL-STD-883 standard for durability.
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Article with all rights reserved, courtesy of pubmed