Photoelectrochemical cells based on emeraldine base form of polyaniline

Journal of the Brazilian Chemical Society

Johannes Kepler University Linz, Linz, Austria¹  Sergawie, Assefa¹  Yohannes, Teketel¹  Günes, Serap¹  Neugebauer, Helmut¹  Addis Ababa University, Addis Ababa, Ethiopia¹  Sariciftci, Niyazi S.¹ 

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

DOI  :  10.1590/S0103-50532007000600013

学科分类：化学（综合）

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 (VOC) of –0.132 V and a short-circuit current (ISC) 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 VOC of –0.205 V and an ISC of 105 µA cm-2 when illuminated under the same conditions.

【 授权许可】

Unknown