Annealing effect on the structural and optical behavior of ZnO:Eu

Autor:	Francis, Otieno, Mildred, Airo, Rudolph M, Erasmus, Alexander, Quandt, David G, Billing, Daniel, Wamwangi
Rok vydání:	2020
Předmět:	Nanoscience and technology Physics Article Materials science
Zdroj:	Scientific Reports
ISSN:	2045-2322
Popis:	Eu-doped ZnO (ZnO:Eu3+) thin films deposited by RF magnetron sputtering have been investigated to establish the effect of annealing on the red photoluminescence. PL spectra analysis reveal a correlation between the characteristics of the red photoluminescence and the annealing temperature, suggesting efficient energy transfer from the ZnO host to the Eu3+ ions as enhanced by the intrinsic defects levels. Five peaks corresponding to 5D0–7FJ transitions were observed and attributed to Eu3+ occupancy in the lattice sites of ZnO thin films. As a proof of concept a dye sensitized solar cell with ZnO:Eu3+ thin films of high optical transparency was fabricated and tested yielding a PCE of 1.33% compared to 1.19% obtained from dye sensitized solar cells (DSSC) with pristine ZnO without Eu produced indicating 11.1% efficiency enhancement which could be attributed to spectral conversion by the ZnO:Eu3+.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid________::da9d681ba3c0897182ce5a3c0b239a81 https://pubmed.ncbi.nlm.nih.gov/32444663 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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