100% fluorescence efficiency of 4,4′-bis[(N-carbazole)styryl]biphenyl in a solid film and the very low amplified spontaneous emission threshold -: art. no. 071110
100% fluorescence efficiency of 4,4′-bis[(N-carbazole)styryl]biphenyl in a solid film and the very low amplified spontaneous emission threshold -: art. no. 071110
复制标题
DOI：
10.1063/1.1867555
复制
发表时间：
2005-02-14
影响因子：
4
通讯作者：
Adachi, C
中科院分区：
文献类型：
--
作者：
Aimono, T;Kawamura, Y;Adachi, C
我们研究了在4,4'-二（n -咔唑基）联苯（CBP）宿主中掺杂的荧光苯基苯衍生物的放大自发发射（ASE）特性。特别是4,4′-双[（n -咔唑）苯基]联苯（BSB-Cz）表现出极低的ASE阈值，E-th = 0.32 +/- 0.05 muJ/cm(2)。我们观察到6 wt %- bsb - cz:CBP薄膜的最终光致发光（PL）量子效率为Phi(PL) = 100%，瞬态寿命为tau(f) = 1.0 +/- 0.1 ns，辐射衰减率为k(r) = 1 × 10(9) s（-1）。我们证明了极低的ASE阈值源于BSB-Cz的大辐射衰减率。(C) 2005美国物理研究所。
We examined the amplified spontaneous emission (ASE) characteristics of fluorescent styryl benzene derivatives doped into a 4,4'-di(N-carbazolyl)biphenyl (CBP) host. In particular, 4,4'-bis[(N-carbazole)styryl]biphenyl (BSB-Cz) demonstrated an extremely low ASE threshold of E-th = 0.32 +/- 0.05 muJ/cm(2). We observed that the 6 wt %-BSB-Cz:CBP film has an ultimate photoluminescence (PL) quantum efficiency of Phi(PL) = 100% and a short transient lifetime of tau(f) = 1.0 +/- 0.1 ns, leading to a large radiative decay rate of k(r) = 1 x 10(9) s(-1). We demonstrated that the extremely low ASE threshold originated from the large radiative decay rate of BSB-Cz. (C) 2005 American Institute of Physics.