More facts about the dye-TiO2 Gr?tzel cell.
A green dye has a lab efficiency of 7.1% in a liquid cell (71 Wm-2)
(11% in Am 1,5 - sunlight concentration ?).
No cell life-time data yet.
Australian company Dyesol sells all needed to build a test cell.

http://www.dyesol.com/index.php?page=intro

1:14 in this video to see what colloidal silver in looks like, it's just silver particals in water. This stuff is easy to make, and settles into a fine silver dust on the bottom of the glass, if left for awhile. Maybe this will make HHO in the cell, if it's in water, and the electrodes are connected.

would Silver particals aid the coloured dye?

Read this : www.keelynet.com/energy/tricksol.htm    ,
probably somebody search for more L.I. Belenyessy info
and about O.Barker
http://v3.espacenet.com/textdoc?DB=EPODOC&IDX=US5009243&F=0

S
  dL

http://www.google.com/patents?id=K-EbAAAAEBAJ&printsec=abstract&zoom=4&dq=5,009,243#PPP1,M1

oddly the pictures are screwed through google - I downloaded the PDF from here: http://www.pat2pdf.org/patents/pat5009243.pdf