Why graphene-TiO2 giving high efficiency compare to bare TiO2 in DSSC? Is there graphene playing important role in energy level in DSSC?
Yes, Sudhakar, absolutely.
Not only in DSSC but in many technologies there are several benefits from using Graphene. It'a an incredible material!
Please see, in example: http://www.iflscience.com/technology/tweaked-graphene-could-double-electricity-generated-solar
http://www.renewableenergyworld.com/articles/2015/06/strengthening-solar-cell-performance-with-graphene.html
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