Naslov
Influence of Nd3+ doping on the structural and near-IR photoluminescence properties of nanostructured TiO2 films

Autori
Pandiyan, Rajesh ; Bartali, Ruben ; Micheli, Victor ; Gottardi, Gloria ; Luciu, Ioana ; Ristic Davor ; Alombert Goget, Guillaume ; Ferrari, Maurizio ; Laidani, Nadhira

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
European Materials Research Society Conference Symp. Advanced Inorganic Materials and Concepts for Photovoltaics / G. Conibeer ; Yongxiang Li ; J. Poortmans ; M. Kondo ; A. Slaoui ; M. Tao ; M. Topic - : Elsevier, 2011

Skup
European Materials Research Society Conference Symp. Advanced Inorganic Materials and Concepts for Photovoltaics

Mjesto i datum
Nica, Francuska, 14.05.2011. - 18.05.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Co-sputtering; rare earth doping; Neodymium; Titanium dioxide films; photoluminescence

Sažetak
Doping of TiO2 – a wide band gap material - with Neodymium (Nd3+) ions have been the focus of research interest for the solar spectrum downshifting, a process which can improve the efficiency of silicon based solar cells. This work presents the influence of varying Nd doping concentration in the range 1.17-25 at.% in the TiO2 host matrix. Thin films of thickness between 1 - 2μm were deposited by Radio-Frequency Co-Sputtering of TiO2 and Neodymium (Nd) target on quartz and silicon substrates at room temperature. The films are annealed in an air ambient after deposition. Film properties were studied from the structural and chemical composition point of view by means of X-ray diffraction (XRD), Auger Electron Spectroscopy (AES). Two distinct photoluminescence emission peaks were observed at 902 and 1080 nm in the doped films, pertaining to the transitions between the excited levels 4F3/2 to 4I9/2 and 4I11/2 levels of the Nd3+ ions by exciting at 514.5 and 355 nm.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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