Doping effects of transition metal elements to titanium dioxide for perovskite solar cells

Doping effects of transition metal elements to titanium dioxide for perovskite solar cells

Organic-inorganic hybrid heterojunction solar cells containing perovskite CH3NH3PbI3 using Nb, Ta, or V-doped TiO2 as electron-transporting layers were fabricated and characterized. By Nb doping, the conductivity and carrier density of the TiO2 increased, and its flat-band potential showed a positiv...

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Hauptverfasser: Saito, Jo, Suzuki, Atsushi, Akiyama, Tsuyoshi, Oku, Takeo
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Carrier density
Circuits
Doping
Electron transport
Energy conversion efficiency
Heterojunctions
Niobium
Perovskites
Photovoltaic cells
Short circuit currents
Solar cells
Tantalum
Titanium
Titanium dioxide
Transition metals
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Zusammenfassung:Organic-inorganic hybrid heterojunction solar cells containing perovskite CH3NH3PbI3 using Nb, Ta, or V-doped TiO2 as electron-transporting layers were fabricated and characterized. By Nb doping, the conductivity and carrier density of the TiO2 increased, and its flat-band potential showed a positive shift. The short-circuit current density and power conversion efficiency of perovskite solar cells were improved by using Ti0.95Nb0.05O2 compared to undoped TiO2.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4974792