TY - JOUR
T1 - The 2,2,6,6-tetramethyl-l-piperidinyloxy radical
T2 - An efficient, iodine-free redox mediator for dye-sensitized solar cells
AU - Zhang, Zhipan
AU - Chen, Peter
AU - Murakami, Takurou N.
AU - Zakeeruddin, Shaik M.
AU - Grätzel, Michael
PY - 2008/1/24
Y1 - 2008/1/24
N2 - A promising redox system, offering an alternative to the widely used iodide/triiodide couple, based on the stable organic radical 2,2,6,6-tetramethyl-1-piperidinytoxy (TEMPO) has been employed in dye-sensitized solar cells. The photovoltaic performance of this new redox couple has been evaluated by employing nanocrystalline TiO2 films with different thickness. Judicious selections of a 5.0 μm photoanode made from TiO 2 mesoscopic particles and an organic sensitizer with a high molar extinction coefficient yield an overall sokr-to-electric power conversion efficiency of 5.4 % under AM 1.5 illumination at 100 mW cm-2, which is unprecedented for an iodine-free mediator system.
AB - A promising redox system, offering an alternative to the widely used iodide/triiodide couple, based on the stable organic radical 2,2,6,6-tetramethyl-1-piperidinytoxy (TEMPO) has been employed in dye-sensitized solar cells. The photovoltaic performance of this new redox couple has been evaluated by employing nanocrystalline TiO2 films with different thickness. Judicious selections of a 5.0 μm photoanode made from TiO 2 mesoscopic particles and an organic sensitizer with a high molar extinction coefficient yield an overall sokr-to-electric power conversion efficiency of 5.4 % under AM 1.5 illumination at 100 mW cm-2, which is unprecedented for an iodine-free mediator system.
UR - http://www.scopus.com/inward/record.url?scp=38949213343&partnerID=8YFLogxK
U2 - 10.1002/adfm.200701041
DO - 10.1002/adfm.200701041
M3 - Article
AN - SCOPUS:38949213343
SN - 1616-301X
VL - 18
SP - 341
EP - 346
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 2
ER -
