The Electronic Role of the TiO2 Light-Scattering Layer in Dye-Sensitized Solar Cells

Autor:	Brian C. O’Regan, Peter Pechy, Takaki Mizuno, Paul Liska, Pascal Comte, Michael Grätzel, Raphaël Charvet, Tsuguo Koyanagi, Zhipan Zhang, Shaik M. Zakeeruddin, Mohammad Khaja Nazeeruddin, Seigo Ito, Dai-Bin Kuang, Robin Humphry-Baker
Rok vydání:	2007
Předmět:	Dye-sensitized solar cell Materials science Web of science business.industry Solar energy conversion Optoelectronics Physical and Theoretical Chemistry business Layer (electronics) Light scattering
Zdroj:	Zeitschrift für Physikalische Chemie. 221:319-327
ISSN:	2196-7156 0942-9352
DOI:	10.1524/zpch.2007.221.3.319
Popis:	Dye-sensitized solar cells have been fabricated with different kinds of TiO2 films including SiO2 coated and bare TiO2 microparticles as light-scattering layer (LSL). Results show that the LSL barely affects the cell's dark current, whereas under illumination, it made a significant contribution to the total photocurrent. Photo-voltage decay measurements performed under bias illumination show the density of electronic states (DOS) of the LSL to be two times smaller than that of a transparent nanoparticle layer (TNL). Strikingly, DSCs fabricated from a 4.5μm thick LSL alone showed a conversion efficiency of 5% despite of being pale pink in color. This impressive performance is attributed to light containment in the LSL and a low density of defect electronic states.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5b769d1e1d6ff42ddafb95f1d59b0b45 https://doi.org/10.1524/zpch.2007.221.3.319 Zobrazit plný text záznamu