High-efficiency dye-sensitized solar cell based on a nitrogen-doped nanostructured titania electrode.
A highly efficient dye-sensitized solar cell (DSC) was fabricated using a nanocrystalline nitrogen-doped titania electrode. The properties of the nitrogen-doped titania powder, film, and solar cell were investigated. The substitution of oxygen sites with nitrogen atoms in the titania structure was confirmed by X-ray photoemission spectroscopy (XPS). The UV-vis spectrum of the nitrogen-doped powder and film showed a visible light absorption in the wavelength range from 400 to 535 nm. An enhancement of the incident photon-to-current conversion efficiency (IPCE) in the range of 380-520 nm and 550-750 nm was observed. An 8% overall conversion efficiency has been achieved. The results of the stability test indicated that the solar cell fabricated by the nitrogen-doped titania exhibited great stability.
Ma
Tingli
T
National Institute of Advanced Industrial Science and Technology (AIST), AIST Kyushu, Shuku 807-1, Tosu, Saga 841-0052, Japan. tingli-ma@chem.rc.kyushu-u.ac.jp
Akiyama
Morito
M
Abe
Eiichi
E
Imai
Isao
I
D004396:Coloring Agents / Q000737:chemistry; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008839:Microelectrodes; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods; D009584:Nitrogen / Q000737:chemistry*; D010777:Photochemistry / Q000295:instrumentation* / Q000379:methods; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
D004396:Coloring Agents; C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen