Fe doped TiO2 thin film as electron selective layer for inverted solar cells. (July 2016)

• Record Type: Journal Article
• Authors: Kösemen, Arif; Alpaslan Kösemen, Zühal; Canimkubey, Betül; Erkovan, Mustafa; Başarir, Fevzihan; San, Sait Eren; Örnek, Osman; Tunç, Ali Veysel
• Is Part Of: Solar energy. Volume 132(2016)
• Page Start: 511
• Page End: 517
• Publication Date: 2016-07
• Subjects: Inverted type solar cells -- TiO2 thin film -- Fe doped TiO2 thin film -- Doped metal oxide semiconductors; Solar energy -- Periodicals; Solar engines -- Periodicals; 621.47
• DOI: 10.1016/j.solener.2016.03.049
• Languages: English
• ISSNs: 0038-092X

Abstract

Highlights: Fe doped and undoped TiO2 thin films fabricated by sol–gel method. Inverted type solar cells were fabricated with Fe doped TiO2 thin films. A dramatic increase was observed in the J SC with the 1% Fe doped TiO2 solar cells. I sc and V oc showed maximum values at 1% Fe 2+ concentration. Solar cell efficiency of 2.78% was obtained at 1% Fe 2+ concentration. Abstract: Inverted P3HT:PCBM based organic solar cells were fabricated by using Fe 2+ doped TiO2 films as electron selective layer. Pure and Fe 2+ doped TiO2 films were prepared by sol–gel method and the optical as well as the structural properties of the thin films were characterized by UV–Vis spectrophotometer and SEM. The concentration of Fe 2+ was varied as 0.5%, 1%, 2% and 3% (w/w) in TiO2 layer and the influence of Fe 2+ doping on the solar cell parameters were systemically investigated. Photocurrent density of the solar cells as increased from 8.75 to 13.8 mA/cm 2, whereas the solar cell efficiency changed from 1.7% to 2.79% by using Fe 2+ doped TiO2 electron selective layer. It was experimentally found and demonstrated that charge injection and selection in the TiO2 interlayer was improved by doping of Fe 2+ atoms in the TiO2 .