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Resonant cavity effect optimization of III-nitride thin-film flip-chip light-emitting diodes with microsphere arrays

机译：具有微球阵列的III族氮化物薄膜倒装芯片发光二极管的谐振腔效应优化

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摘要

Comprehensive studies were carried out to investigate the light extraction efficiency of thin-film flip-chip (TFFC) light-emitting diodes (LEDs) with anatase TiO2 microsphere arrays by employing the finite-difference time-domain method. The quantum well position and the resonant cavity effect were studied to obtain optimum light extraction for the planar TFFC LED. Further enhancement in light extraction was achieved by depositing microsphere arrays on the TFFC LED. The calculation results showed that the sphere diameter, packing density, and packing configuration have significant effects on the light extraction efficiency. A maximum light extraction efficiency of 75% in TFFC LEDs with microsphere arrays has been achieved. This study demonstrates the importance of optimizing the quantum well position, cavity thickness, sphere diameter, sphere packing density, and packing configuration for enhancing the light extraction efficiency of TFFC LEDs with microsphere arrays. (C) 2015 Optical Society of America
机译：采用有限差分时域方法，对锐钛矿型TiO2微球阵列薄膜倒装芯片（TFFC）发光二极管（LED）的光提取效率进行了综合研究。研究了量子阱位置和谐振腔效应，以获得平面TFFC LED的最佳光提取。通过在TFFC LED上沉积微球阵列，可以进一步提高光提取效率。计算结果表明，球体直径，堆积密度和堆积形状对光提取效率有显着影响。具有微球阵列的TFFC LED的最大光提取效率达到了75％。这项研究表明优化量子阱位置，腔体厚度，球体直径，球体堆积密度和堆积配置对于提高微球阵列TFFC LED的光提取效率的重要性。 （C）2015年美国眼镜学会

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