Photovoltaic effect of nanostructured TiO2 layers in dye sensitized solar cells
Küçük Resim Yok
Tarih
2012
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Natl Inst Optoelectronics
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Metal-free organic sensitizer comprising donor, electron-conducting, and anchoring groups is engineered at a molecular level and synthesized for sensitization of mesoscopic titanium dioxide injection solar cells. The organic sensitizer anchored onto TiO2 and is tested in dye sensitized solar cell with a volatile electrolyte system. In order to see the TiO2 thickness dependence study of the triphenylene diamine based sensitizer on photovoltaic properties, we have fabricated dye sensitized solar cells having TiO2 films of various thicknesses. The efficiency increased with the thickness of TiO2 nanocrystalline layer; on the other hand, the photovoltage remained the same with increasing thickness. The increased surface area due to higher thickness of TiO2 film allows for better light harvesting, which however enhances the possibility for injected electrons to recombine with the oxidized redox species triiodide. TPD-sensitized solar cell devices using a 10 (transparent) + 4 (scattering) mu m thin TiO2 layer yielded a short-circuit photocurrent density of 7.70 mA/cm(2), an open-circuit voltage of 800 mV, and a fill factor of 0.54, corresponding to an overall conversion efficiency of 3.34 % under standard AM 1.5 sun light.
Açıklama
Anahtar Kelimeler
Dye sensitized solar cells, Photovoltaics, Renewable energy, Nanoporous TiO2
Kaynak
Journal of Optoelectronics and Advanced Materials
WoS Q Değeri
Q4
Scopus Q Değeri
N/A
Cilt
14
Sayı
09.Oct
