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Zinc oxide layer have been prepared by spray pyrolysis technique. The effect of substrate temperature on structural and optical properties of the prepared layer has been investigated. XRD patterns show that ZnO layers are polycrystalline with (002) plane as preferential orientation. FESM images show that ZnO layeres consist of nanorods. Semi-conducting MEH-PPV polymer, which prepared in our lab, was dissolved in THF and sprayed on glass and KBr substrates at 150 oC with two different carrier gases. Organic-inorganic solar cell from MEH-PPV with ZnO nanorods layers was constructed, characterized and its efficiency was calculated.

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