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Title of Journal: Sci China Phys Mech Astron

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Abbravation: Science China Physics, Mechanics and Astronomy

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SP Science China Press

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DOI

10.1016/0009-5907(70)80006-0

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1869-1927

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The effect of modified layers on the performance o

Authors: Yue Yan SuLing Zhao Zheng Xu Gong Wei LiHui Wang
Publish Date: 2011/01/22
Volume: 54, Issue: 3, Pages: 453-458
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Abstract

We fabricate inverted organic/inorganic hybrid solar cells based on vertically oriented ZnO nanorods and polymer MEHPPV The morphology of ZnO nanorods and ZnO nanorods/MEHPPV hybrid structure is depicted by using scanning electron microscopy SEM Xray diffraction XRD and atomic force microscope AFM respectively It is observed that ZnO nanorods array grows primarily aligned along the perpendicular direction of the ITO substrate The MEHPPV molecule does not enter the interspace between ZnO nanorods completely according to SEM picture It results in the small and bad contact area between ZnO nanorods and MEHPPV To improve the photovoltaic performance we also fabricate another kind of photovoltaic PV device modified by N719 dye and exploit the effect of N719 After the modification of ZnO nanorods by N719 not only J sc increases from 0257 mA/cm2 to 042 mA/cm2 but also V oc enhances from 037 V to 042 V Insert LiF buffer layer between MEHPPV and anode J sc of 105 mA/cm2 is obtained and it is 25 times that the device without LiF


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