Active layer spin coating speed dependence of inverted organic solar cell based on Eosin-Y-coated ZnO nanorod arrays

R. T. Ginting, Chi Chin Yap, Muhammad Yahaya, V. Fauzia, Muhamad Mat Salleh

Research output: Contribution to journalArticle

Abstract

The active layer spin coating speed dependence of the performance of inverted organic solar cells (OSCs) based on Eosin-Y-coated ZnOnanorods has been investigated. An active layer consisted of poly(2-methoxy-5-(2′-ethyl)- hexyloxy-p-phenylenevinylene) (MEH-PPV) as donor and phenyl-c61-butyric acid methyl ester (PCBM) as acceptor was employed, whereas ZnO nanorods were utilized as electron transporting layer. The active layer was deposited on top of Eosin-Y-coated ZnO nanorods with various spin coating speeds (1000-4000 rpm). Inverted OSCs with a structure of FTO/Eosin-Y-coated ZnO nanorods/MEH-PPV:PCBM /Ag were characterized through the current density-voltage (J-V) measurement under illumination intensity of 100 mW/cm2. Based on the investigation, the short circuit current density (Jsc) and the power conversion efficiency (PCE) enhanced significantly, where as fill factor slightly increased with spin coating speed. The two-diode equivalent model was found to fit the experimental J-V curves very well. The optimum PCE of 1.18 ± 0.07% was achieved at the highest spin coating speed of 4000 rpm, as a result of the decrement of diffusion current density (Jdiff), recombination current density (Jrec), and ideality factor, thus further confirms the strong built-in electric field in thinner photoactive layer.

Original languageEnglish
Article number012016
JournalJournal of Physics: Conference Series
Volume431
Issue number1
DOIs
Publication statusPublished - 2013

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nanorods
coating
solar cells
current density
butyric acid
esters
short circuit currents
illumination
diodes
electric fields
electric potential
curves
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Active layer spin coating speed dependence of inverted organic solar cell based on Eosin-Y-coated ZnO nanorod arrays. / Ginting, R. T.; Yap, Chi Chin; Yahaya, Muhammad; Fauzia, V.; Mat Salleh, Muhamad.

In: Journal of Physics: Conference Series, Vol. 431, No. 1, 012016, 2013.

Research output: Contribution to journalArticle

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