Optical Design that Increases Light-Extraction Efficiencies of Organic Light-Emitting Devices through Finite-Difference-Time-Domain Method
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概要
- 論文の詳細を見る
The efficiency of light extraction in organic light-emitting devices is insufficient for practical use. This low efficiency is mainly attributed to the refractive index of the light-emitting layer. As the source of an organic light-emitting device is the sum of the point sources, and the wavelength of the emitted light and the scale of the optical structure are comparable, the near-field from the source plays an important role in determining the efficiency with which light is extracted in organic light-emitting devices. Finite-difference time-domain (FDTD) calculations were used to simulate conditions that could not be illustrated with ray optics. We found that the spherical Poynting vector of a point source becomes normal to the high index-ratio interface situated in the near field of the source, and this transformation of the Poynting vector results in the light-extraction efficiency being increased.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-10-15
著者
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WATARI Noriko
NEC Scientific Information Systems Development Co., Ltd.
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Tsuge Hisanao
Jisso And Production Technologies Research Laboratories Nec Corporation
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Gotoh Tomohisa
Fundamental And Environmental Research Laboratories Nec Corporation
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Kamijo Atsushi
Fundamental Research Laboratories Nec Corp.
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Watari Noriko
NEC System Technologies, Ltd., in NEC Jisso and Production Technologies Research Labs., 1120, Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan
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Tsuge Hisanao
Jisso and Production Technologies Research Laboratories, NEC Corporation, 1120, Shimokuzawa, Sagamihara, Kanagawa 229-1198, Japan
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Kamijo Atsushi
Fundamental and Environmental Research Laboratories, NEC Corporation, 34, Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan
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Gotoh Tomohisa
Fundamental and Environmental Research Laboratories, NEC Corporation, 34, Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan
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