Enhancing the photoelectrical performance of dye-sensitized solar cells using TiO₂:Eu^{3 +}nanorods

Abstract

TiO(2):Eu(3+) nanorods are hydrothermally grown and used to fabricate a bilayer film electrode in a dye-sensitized solar cell. A light-to-electrical energy conversion efficiency of 8.0% and a quantum efficiency of 93.7% (at 575 nm) is achieved in this solar cell. The high efficiency is due to the improvement of ultraviolet light harvesting via a down-conversion luminescence process by the Eu(3+) ion and the increase of light scattering by one-dimensional TiO(2).

Enhancement of the Photovoltaic Performance of Dye‐Sensitized Solar Cells by Doping Y0.78Yb0.20Er0.02F3 in the Photoanode

“…Compared to the doping with rare-earth oxides, [7][8][9] doping. This finding demonstrates the feasibility of the conversion luminescence with p-type doping in the DSSC and shows a better impact by doping with rare-earth fluorides than that by doping with rare-earth oxides.…”

“…However, little significant research on conversion luminescence and/or p-type doping by rare-earth ions in DSSC has been attempted. [7][8][9] Different from other methods, we show a novel device created by introducing a rare-earth fluoride Y 0.78 Yb 0.20 Er 0.02 F 3 in the TiO 2 photoanode in a DSSC. The incident light harvesting and the photocurrent of the DSSC are enhanced via up-conversion by the rare-earth fluoride.…”

Influence of niobium doping on phase composition and defect-mediated photoluminescence properties of Eu3+-doped TiO2 nanopowders synthesized in Ar/O2 thermal plasma

“…Titania (TiO 2 ) semiconductor exhibiting excellent thermal, chemical, and mechanical properties has been reported to be a promising candidate as a host material for the Eu 3+ activator [14][15][16][17][18][19][20]. Since the direct excitation of the parityforbidden intra-f-shell lanthanide ion crystal-field transitions is inefficient, most photoluminescence (PL) phosphors have primarily been targeted at the bright emission in the visible range under indirect excitation by ultraviolet (UV) light [21][22][23][24][25][26][27].…”

Dual functions of YF3:Eu3+ for improving photovoltaic performance of dye-sensitized solar cells

“…The introduction of doped rare-earth compound not only increases the photocurrent via conversion luminescence, but also improves the photovoltage by p-type doping effect, this double functions is very significant for enhancing the photovoltaic performance of the DSSC. Unfortunately, little significant research on conversion luminescence and/or p-type doping effect by rare-earth ions in the DSSC has been attempted151617.…”