Photoelectrochemical characteristics and behavior of a surfactant

J . Phys. Chem. 1984, 88, 4288-4295

4288

Photoelectrochemlcal Characteristics and Behavior of a Surfactant Aluminum Phthalocyanine Cell D. BBlanger, J. P. Dodelet,* L. H. Dao, INRS- Energie, Varennes, QuBbec, Canada JOL 2PO

and B. A. Lombos Concordia University, MontrZal, Qudbec, Canada H3G 1 M8 (Received: March 5, 1984)

Solid-liquid junction cells were prepared by joining the surfactant aluminum phthalocyanine (SAlPc) with various redox systems. SAlPc is electrodeposited onto NESA glass, onto Sb-doped SnO, with two kinds of resistivities, and also onto gold electrodes. Good quality organic films were obtained for thicknesses ranging from 270 to 4000 A. Concentration and pH conditions were optimized for the best redox systems: Fe(CN):-/', BQ/HQ, and I6 mW cm-2 is due to q (%)

-

i forward

1 I

0.6

,

0.4

reverse

.

I

0.2 APPLIED

0.0 BIAS

0.2

,

,

0.4

(V)

Figure 8. Redox system: I