Electrical properties of 1,4-bis(4-(phenylethynyl)phenylethynyl)benzene and its application for organic light emitting diodes
Electrical properties of 1,4-bis(4-(phenylethynyl)phenylethynyl)benzene and its application for organic light emitting diodes
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DOI：
10.1039/b700466d
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发表时间：
2007-06-14
影响因子：
4.9
通讯作者：
Adachi, Chihaya
中科院分区：
文献类型：
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作者：
Fenenko, Larysa;Shao, Guang;Adachi, Chihaya
我们发现一种亚苯基亚乙炔基衍生物，（4-（苯乙炔基）苯乙炔基）苯（BPPB）在溶液（Phi（PL）= 95 +/-3%）和薄膜（Phi（PL）= 71 +/-3%）中均提供非常高的光致发光效率;此外，本发明还我们观察到λ（EL（max））类似于470和510 nm的蓝色电致发光（EL），外部EL效率为η（EL）类似于0.53%在电流密度为2 A cm ~（-2）时，BPPB的最大发光强度为70000 cd·m ~（-2），同时还发现BPPB在有机发光二极管中起到空穴传输层的作用。
We found that a phenylene ethynylene derivative, 1,4-bis(4-(phenylethynyl)phenylethynyl)benzene (BPPB), provides very high photoluminescence efficiency both in solution (Phi(PL) = 95 +/- 3%) and thin films (Phi(PL) = 71 +/- 3%); further, we observed blue electroluminescence (EL) of lambda(EL (max)) similar to 470 and 510 nm with an external EL efficiency of eta(EL) similar to 0.53% and maximum luminance of similar to 70000 cd m(-2) at current density of similar to 2 A cm(-2) with BPPB as an emitter; also we identified that BPPB functions as a hole transport layer in organic light emitting diodes.