Health & Environmental Research Online (HERO)


Print Feedback Export to File
1586232 
Journal Article 
Organic Bulk Heterojunction Solar Cell Based on Rosebengal: ncTiO(2) and Parameter Extraction by Simulation 
Sreekala, CO; Saneesh, PF; Sreelatha, KS; Kishnashree, A; Roy, MS 
2012 
Yes 
Advanced Materials Research
ISSN: 1022-6680 
Advanced Materials Research 
403-408 
4304-4310 
WOS:000310764702114 
In bulk heteroj unction solar cells, the donor and acceptor
materials are intimately blended throughout the bulk, so that the excitons generated will reach
the interface within their lifetime. In this work, Rosebengal (RB) is used as the donor material
and nanocrystalline Titanium dioxide (nc TiO2) as the acceptor material. Devices with device
structure ITO/RB:TiO2/Ag are prepared and their optical and electrical properties are compared at
different temperatures. Optical absorption spectroscopic analysis shows that the absorption of
Rose bengal ranges from 650-800 nm corresponding to a band gap of 1.98 eV. Cyclic voltametric
analysis, and photo voltaic properties are analysed. Using simulation, the dark current
parameters such as ideality factor (n), mobility (mu) potential barrier (phi(b)) and carrier
concentration are extracted and tabulated. 
Exciton; bulk heterojunction; Cyclic voltametry; ideality factor; mobility