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首页> 外文期刊>Applied optics >Waveguide Analysis of Organic Light-emitting Diodes Fabricated on Surfaces with Wavelength-scale Periodic Gratings
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Waveguide Analysis of Organic Light-emitting Diodes Fabricated on Surfaces with Wavelength-scale Periodic Gratings

机译：具有波长尺度周期性光栅的表面上制造的有机发光二极管的波导分析

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Numerical techniques for the analysis of multilayer waveguide structures were used to study the modes that exist in organic light-emitting diode (OLED) devices. The analysis revealed that waveguide modes of the OLED structure could be grouped, according to the behavior of modal-field profiles in the air cover and the glass substrate, into one of four different "families": (i) bound mode, (n) semibound modes, (iii) leaky modes, and (tv) nonphysical modes. Four different OLED samples were fabricated on glass substrates on which photoresist gratings had been previously formed. The theory was used to compute the angles at which light from these devices should exit into the air. Theory and data agreed well for the semibound modes for all samples, however, they did not agree so well for the leaky modes. Further investigation revealed that better agreement between theory and data could be obtained with thesemodes being analyzed as Fabry--Perot cavity modes. The theoretical relation betWeen leaky waveguide modes and Fabry--Perot cavity modes is discussed.
机译：用于分析多层波导结构的数值技术被用于研究有机发光二极管（OLED）器件中存在的模式。分析表明，根据气罩和玻璃基板中模态场分布的行为，可以将OLED结构的波导模式分为四个不同的“族”之一：（i）束缚模式，（n）半绑定模式，（iii）泄漏模式和（tv）非物理模式。在先前已在其上形成光刻胶光栅的玻璃基板上制造了四个不同的OLED样品。该理论用于计算这些设备发出的光应向空中出射的角度。理论和数据对于所有样品的半键合模式非常吻合，但是，对于泄漏模式它们并不太一致。进一步的研究表明，通过将这些模式作为法布里-珀罗腔模式进行分析，可以在理论和数据之间获得更好的一致性。讨论了泄漏波导模和法布里－珀罗腔模之间的理论关系。

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