PCBM-doped electro-optic materials: investigation of dielectric, optical and electro-optic properties for highly efficient poling
PCBM-doped electro-optic materials: investigation of dielectric, optical and electro-optic properties for highly efficient poling
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PCBM 掺杂电光材料：研究介电、光学和电光特性以实现高效极化
DOI：
10.1039/c6tc03932d
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发表时间：
2016-11
影响因子：
6.4
通讯作者：
Jen Alex K. -Y.
中科院分区：
文献类型：
--
作者：
Wu Jieyun;Luo Jingdong;Cernetic Nathan;Chen Kaixin;Chiang Kin-Seng;Jen Alex K. -Y.
富勒烯在有机电子材料和器件中普遍流行。PCBM等富勒烯衍生物具有较高的电子亲和力、电子迁移率和电子传输的渗流网络，使其成为有机太阳能电池和电子器件中优良的电子受体和传输材料。利用这些电子性质和分子三维网络来探索它们在新的电子或光学器件中的潜在应用是很有趣的。本工作将PCBM掺杂到有机电光材料中，系统地研究了其表面形貌、光物理性质、介电性质以及光学性质(折射率)。结果表明，掺杂后材料的介电常数和折射率均有显著提高。基于介电常数随温度变化的测量，建立了相对微观偶极矩与介电性能之间的关系。结果表明，在极化温度下，掺杂PCBM的薄膜P1/PCBM的发色团的偶极矩大于常规EO薄膜P1的偶极矩。P1/PCBM中生色团微观性质的增强很好地解释了电场诱导极化的改善效果。掺杂PCBM的薄膜具有较大的电光系数(197Pm V−1比133 pV−1)和优值系数n3r33(1002.9比632.2)，以及更高的阶数(15.7%比10.6%)和双折射，显示出PCBM在有机电光材料和器件中的巨大潜力。
Fullerenes are ubiquitously popular in organic electronic materials and devices. The high electron affinity, electron mobility and percolated networks for electron transport of fullerene derivatives, such as PCBM, have established them as excellent electron acceptors and transport materials in organic solar cells and electronic devices. It is intriguing to utilize these electronic properties and molecular three-dimensional networks to explore their potential applications in new electronic or optical devices. In this work, PCBM was doped into organic electro-optic (EO) materials and their surface morphology, photophysical properties, dielectric properties as well as optical properties (refractive index) were systematically investigated. It was found that the dielectric constant and refractive index of the doped materials were significantly enhanced. Based on temperature-dependent dielectric constant measurements, the relation between relative microscopic dipole moment and dielectric properties was established. It revealed that, at the poling temperature, the dipole moment of chromophores in the PCBM-doped film P1/PCBM was higher than that of the conventional EO film P1. This enhanced microscopic property of chromophores in P1/PCBM well accounted for the improved poling results in electric field induced poling. A larger EO coefficient (197 pm V−1versus 133 pm V−1) and figure-of-merit n3r33 (1002.9 versus 632.2), as well as a higher order parameter (15.7% versus 10.6%) and birefringence were achieved for the PCBM-doped film P1/PCBM, demonstrating the significant potential of PCBM to be used in organic EO materials and devices.
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影响因子：
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作者：
Xing‐Hua Zhou;Jingdong Luo;J. Davies;Su Huang;A. Jen
通讯作者：
Xing‐Hua Zhou;Jingdong Luo;J. Davies;Su Huang;A. Jen
影响因子：
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影响因子：
3.7
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通讯作者：
Tae‐Dong Kim;Jingdong Luo;Yen‐Ju Cheng;Z. Shi;S. Hau;Sei-Hum Jang;Xing‐Hua Zhou;Yanqing Tian;Brent M. Polishak;Su Huang;Hong Ma;L. Dalton;A. Jen
影响因子：
15
作者：
Kim, Tae-Dong;Kang, Jae-Wook;Jen, Alex K. -Y.
通讯作者：
Jen, Alex K. -Y.
影响因子：
8.6
作者：
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通讯作者：
P. Sullivan;A. Akelaitis;Sang Kyu Lee;Genette I. McGrew;Susan K. Lee;Dong Hoon Choi;L. Dalton