High barrier properties of transparent thin-film encapsulations for top-emission organic light-emitting diodes

Hui-Ying Li; Yu Duan

doi:10.1117/12.2062525

8 October 2014 High barrier properties of transparent thin-film encapsulations for top-emission organic light-emitting diodes

Hui-Ying Li, Yu Duan

Author Affiliations +

Proceedings Volume 9183, Organic Light Emitting Materials and Devices XVIII; 918325 (2014) https://doi.org/10.1117/12.2062525
Event: SPIE Organic Photonics + Electronics, 2014, San Diego, California, United States

Abstract

This paper reports a low-temperature thin-film encapsulation (TFE) process based on a low temperature atomic layer deposition ZrO₂ layer for top-emission organic light-emitting devices (TEOLEDs). The barrier characteristics of TFE showed a lower water vapor transmission rate (WVTR) of 2.3 × 10⁻³ g/m²/day and a longer continuous operation lifetime of 6-folds compared to the device without TFE under identical environmental and driving conditions. Furthermore, the emitting light extraction of the device with barrier layers was improved compared to the bare device. The theoretical calculation data were consistent with the experimental results and showed the potential for designing optimized TFE structures for improving light transmission.

Citation Download Citation

Hui-Ying Li and Yu Duan "High barrier properties of transparent thin-film encapsulations for top-emission organic light-emitting diodes", Proc. SPIE 9183, Organic Light Emitting Materials and Devices XVIII, 918325 (8 October 2014); https://doi.org/10.1117/12.2062525

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