Photoelectrochemical cells based on emeraldine base form of polyaniline

Journal of the Brazilian Chemical Society

Assefa Sergawie²  Teketel Yohannes¹  Serap Günes²  Helmut Neugebauer²  Niyazi S. Sariciftci² 

[1] ,Johannes Kepler University Linz Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry Linz,Austria

关键词: emeraldine base form of polyaniline;    nanocrystalline TiO2;    Eu2+/Eu3+ redox couple;    photoelectrochemical cell;   

DOI  :  10.1590/S0103-50532007000600013

来源: SciELO

【 摘 要 】

Photoelectrochemical cells (PECs) have been fabricated using the emeraldine base form of polyaniline (EB) as a photoactive material and Eu2+/Eu3+ redox couple in methanol as an electrolyte. A PEC with a structure: Glass/ITO/EB/electrolyte/Pt produces an open-circuit voltage (V OC) of -0.132 V and a short-circuit current (I SC) of 0.64 µA cm-2 under 50 mW cm-2 white light illumination from Xe lamp. In an effort to increase the photoresponse, a PEC with a structure: Glass/ITO/EB:Nc-TiO2/Electrolyte/Pt has been devised in which a composite film of EB and nanocrystalline TiO2 (Nc-TiO2) is used as a photoactive material. The cell shows a V OC of -0.205 V and an I SC of 105 µA cm-2 when illuminated under the same conditions.

【 授权许可】

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