Enhancement of incident photon-to-current conversion efficiency for phthalocyanine-sensitized solar cells by 3D molecular structuralization.
Enlarging the molecular size of zinc phthalocyanine (Pc) dyes three dimensionally with 2,6-diphenylphenoxy substituents significantly reduced the aggregation of the dyes on a TiO(2) surface. As a result, the incident photon-to-current conversion efficiency was improved not only in the Q band but over the whole absorption range, achieving 4.6% energy conversion efficiency under one-sun conditions. Electron lifetime measurements indicated that these Pc dyes do not enhance charge recombination, encouraging further development of Pc.
Mori
Shogo
S
Division of Chemistry and Materials, Faculty of Textile Science and Technology, and Collaborative Innovation Center of Nanotech FIBER (nanoFIC), Shinshu University, Ueda 386-8567, Japan. shogmori@shinshu-u.ac.jp
Nagata
Morio
M
Nakahata
Yuki
Y
Yasuta
Kazumasa
K
Goto
Ryota
R
Kimura
Mutsumi
M
Taya
Minoru
M