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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes >Simple Accurate System for Measuring Absolute Photoluminescence Quantum Efficiency in Organic Solid-State Thin Films
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Simple Accurate System for Measuring Absolute Photoluminescence Quantum Efficiency in Organic Solid-State Thin Films

机译:用于测量有机固态薄膜中绝对光致发光量子效率的简单精确系统

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摘要

We accurately measured the absolute photoluminescence (PL) quantum efficiency (η_(PL)) of organic solid-state thin films using an integrating sphere. We particularly measured the η_(PL) of conventional organic materials used in organic light emitting diodes, such as a tris(8-quinolionolato)aluminum(III) complex (Alq_3), and a 2 wt%-fac-tris(2-phenylpyridyl)iridium(III): 4,4′-bis(carbazol-9-yl)-2,2′-biphenyl [Ir(ppy)_3:CBP] co-deposited film. Alq_3 and Ir(ppy)_3:CBP showed a η_(PL) = 20 ± 1% and 97 ± 2%, which corresponded well to external electroluminescence efficiency using these materials. We also measured their transient PL decay and determined the radiative rate constants with their η_(PL).
机译:我们使用积分球精确测量了有机固态薄膜的绝对光致发光(PL)量子效率(η_(PL))。我们特别测量了有机发光二极管中使用的常规有机材料的η_(PL),例如三(8-喹啉并酮)铝(III)配合物(Alq_3)和2 wt%的fac-三(2-苯基吡啶基) )铱(III):4,4'-双(咔唑-9-基)-2,2'-联苯[Ir(ppy)_3:CBP]共沉积膜。 Alq_3和Ir(ppy)_3:CBP显示η_(PL)= 20±1%和97±2%,这与使用这些材料的外部电致发光效率非常吻合。我们还测量了它们的瞬态PL衰减,并用η_(PL)确定了辐射速率常数。

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