Enhanced photoelectrochemical cell performance of Co doped ZnO nanoparticles sensitized by affordable mixed dyes as sensitizer

Autor:	N.S. Harale, Rekha Nalawade, Sarita Kumbhar, Avinash Nalawade, Deepak Kumbhar, Sagar D. Delekar, Anant Dhodamani
Rok vydání:	2020
Předmět:	Diffraction Chemistry Hexagonal crystal system Photoelectrochemical cell Inorganic Chemistry symbols.namesake Chemical engineering Zno nanoparticles symbols Physical and Theoretical Chemistry Raman spectroscopy Co doped Sol-gel Wurtzite crystal structure
Zdroj:	Inorganic and Nano-Metal Chemistry. :1-14
ISSN:	2470-1564 2470-1556
DOI:	10.1080/24701556.2020.1835963
Popis:	In the present investigation, a simple sol-gel approach has been employed for the synthesis of hexagonal wurtzite ZnO nanoparticles (NPs). X-ray diffraction (XRD) rietveld study and Raman analysis reveal the mislaid of the mixed phases of ZnO NPs after doping. The scanning electron micrographs and transmission electron microscopy confirm the formation of hexagonal disk-shaped NPs. FTIR, PL, EDX, XPS validate optical and stoichiometric concentration of Co in ZnO lattice. UV-visible DRS study shows absorption edge with humps to the red region of the spectrum with increasing the absorption strength and shortening of band gap as the content of Co (II) increases. Finally, the prepared samples were coated on the surface of cleaned FTO substrate through a simple doctor blade technique and sensitized with prepared dye. The ZnO photoanode shows 0.036% of efficiency (η%) while the photoanodes of Co doped samples expose the enhanced efficiencies of 0.29%, 0.389%, 0.089%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57a8452152ce5b1d05b26671e67ade9a https://doi.org/10.1080/24701556.2020.1835963 Zobrazit plný text záznamu