On the Possibility of Enhanced Efficiency in (Zn, Cd)S Dye Sensitized Solar Cell

Author(s) M. Ragam1 , N. Sankar1 , K. Ramachandran2

1 Yadava College, Govindarajan Campus, Madurai, Tamilnadu, India

2 School of Physics, Madurai Kamaraj University, Madurai, Tamilnadu, India

Е-mail ragamyc1983@yahoo.com
Issue Volume 3, Year 2011, Number 1, Part 4
Dates Received 04 February 2011, in final form 14 October 2011, published online 17 October 2011
Citation M. Ragam, N. Sankar, K. Ramachandran, J. Nano- Electron. Phys. 3 No1, 823 (2011)
PACS Number(s) 68.37.Hk, 42.70.Qs, 81.07.b, 81.16.Be
Key words Nano zinc sulphide, Nano cadmium sulphide, Photo-luminescence (2) , Dyes (2) , Solar cell (37) , Efficiency (15) .
Nanoparticles of zinc sulphide and cadmium sulphide are synthesized by aqueous chemical method. XRD data show cubic phase for both the systems. UV-Vis absorption spectra of nano ZnS and nano CdS are blue shifted from the respective bulk. The PL spectra of the above dye sensitized nanomaterials show two broad emission at 402 nm and 510 nm (absent in nano ZnS) which are compared with earlier investigations and discussed. The efficiency of dye sensitized nanocrystalline ZnS solar cell was found to be 0.09 % (Eosin Yellowish Dye) and 0.016 % (Methyl Blue dye). The efficiency of dye sensitized CdS was found to be 0.06 % and this makes it possible for improved efficiency.