Photophysical and electrical properties of organic waveguide nanorods of perylene-3, 4, 9, 10-tetracarboxylic dianhydride
),
Mingliang Tian1,3,4(
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The single crystalline nanostructure of organic semiconductors provides a very promising class of materials for applications in modern optoelectronic devices. However, morphology control and optoelectronic property modulation of high quality single crystalline samples remain a challenge. Here, we report the morphology-controlled growth of single crystalline nanorod arrays of perylene-3, 4, 9, 10-tetracarboxylic dianhydride (PTCDA). We demonstrate that, unlike PTCDA film, PTCDA nanorods exhibits optical waveguide features, enhanced absorption, and Frenkel excitation emission in the visible region. Additionally, we measured the electrical properties of PTCDA nanorods, including the conductivity along the growth direction of the nanorod, which is roughly 0.61 S·m–1 (much higher than that of pure crystalline PTCDA films).
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Photophysical and electrical properties of organic waveguide nanorods of perylene-3, 4, 9, 10-tetracarboxylic dianhydride
), Mingliang Tian1,3,4(
)
Abstract
The single crystalline nanostructure of organic semiconductors provides a very promising class of materials for applications in modern optoelectronic devices. However, morphology control and optoelectronic property modulation of high quality single crystalline samples remain a challenge. Here, we report the morphology-controlled growth of single crystalline nanorod arrays of perylene-3, 4, 9, 10-tetracarboxylic dianhydride (PTCDA). We demonstrate that, unlike PTCDA film, PTCDA nanorods exhibits optical waveguide features, enhanced absorption, and Frenkel excitation emission in the visible region. Additionally, we measured the electrical properties of PTCDA nanorods, including the conductivity along the growth direction of the nanorod, which is roughly 0.61 S·m–1 (much higher than that of pure crystalline PTCDA films).
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Acknowledgements
The authors thank Professor Lei Zhang for kind help in X-ray diffraction measurement, Mr. Fadi Li for assitance with the PL measurement, and Chiming Jin, Yan Liu and Wenshuai Gao for assitance with the device fabrication by FIB techniques. This work was supported by the National Natural Science Foundation of China (Nos. 11174294, 11374302, U1432251, 11574320, U1332139, 11575187 and 11574317), and the program of Users with Excellence, the Hefei Science Center of CAS and the CAS/SAFEA international partnership program for creative research teams of China.
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