Cetyltrimethyl ammonium bromide stabilized lanthanum doped SrSnO3 nanoparticle photoanode for dye sensitized solar cell application

In present investigation, cetyltrimethyl ammonium bromide stabilized La3+ doped SrSnO3 nanoparticles have been synthesized via wet chemical route with lanthanum content of 0-6 at.%. X-ray diffraction and transmission electron microscopic analysis has indicated that doping of lanthanum has no effect on morphology and crystal structure of SrSnO3. A slight shift of Bragg diffraction peaks towards higher angle has been noticed, indicating the lattice contraction on substitution of Sr2+ lattice sites by La3+ ions. The optimum efficiency of 4.7% was obtained for 6 at.% La doped SrSnO3 photoanode based dye sensitized solar cell, which is more than 100% increase in efficiency as compared to pristine SrSnO3 (2.3%) photoanode based cell.