Nanocrystalline ZnO Flakes for Photovoltaic Device Applications
Authors: Al-Heniti, S.; Umar, Ahmad; Singh, Pragya; Sayari, A.; Al-Hajry, A.; Al-Ghamdi, A. A.
Source: Advanced Science Letters, Volume 3, Number 4, December 2010 , pp. 543-547(5)
Publisher: American Scientific Publishers
Abstract:Nanocrystalline ZnO flakes were synthesized via solution process using zinc acetate and diethylamine under refluxing at 85 °C for 4 hrs. The crystalline and wurtzite hexagonal phase of the synthesized ZnO flakes were characterized by UV-visible, FTIR and Raman-scattering. For the photovoltaic device applications, the ZnO flakes were used as photo-anode materials to fabricate dye-sensitized solar cells (DSSCs). The fabricated DSSC exhibited an overall light to electricity conversion efficiency (η) of 0.99%. A short-circuit current (J SC) of 2.33 mA/cm2, open-circuit voltage (V OC) of 0.670 V and fill factor (FF) of 0.59, was achieved from the fabricated nanocrystalline ZnO flakes based DSSCs.
Document Type: Research Article
Publication date: December 1, 2010
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