The far-field optical distribution profiles and properties of a planar white organic light-emitting diode

Henglong Yang; Yu-Chen Lian; Lih-Jeih Chen; Wei-Sheng Li

doi:10.1117/12.2022969

27 September 2013 The far-field optical distribution profiles and properties of a planar white organic light-emitting diode

Henglong Yang, Yu-Chen Lian, Lih-Jeih Chen, Wei-Sheng Li

Author Affiliations +

Proceedings Volume 8829, Organic Light Emitting Materials and Devices XVII; 88291V (2013) https://doi.org/10.1117/12.2022969
Event: SPIE Organic Photonics + Electronics, 2013, San Diego, California, United States

Abstract

The far-field optical distribution characteristics of a planar white organic light-emitting diode (WOLED) source with 10x10mm² emissive area were experimentally investigated and compared to that of a near point-source white light-emitting diode (WLED) as control by using an automatic 2-axis optical measuring system in hemi-spherical space. WOLED has become a potential planar lighting source due to its single device structure consisted of multiple organic layers sandwiched by cathode and anode electrodes on glass substrate. The far-field optical distribution profiles and characteristics of a planar lighting source are crucial for optical design work in specific application. The far-field optical distribution characteristics of a planar WOLED source is expected to be unique and different compared to that of a near point source WLED. Our experimental result indicates that the far-field optical distribution function measured from near point-source WLED is close to that predicted by an ideal Lambertian source. The far-field optical distribution function measured from the planar WOLED source with 10x10 mm² emissive area reveals slightly different characteristics around normal direction from that of the near point-source WLED.

Citation Download Citation

Henglong Yang, Yu-Chen Lian, Lih-Jeih Chen, and Wei-Sheng Li "The far-field optical distribution profiles and properties of a planar white organic light-emitting diode", Proc. SPIE 8829, Organic Light Emitting Materials and Devices XVII, 88291V (27 September 2013); https://doi.org/10.1117/12.2022969

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