*A New Generation of Energy Harvesting Devices DOI: http://dx.doi.org/10.5772/intechopen.94291*

and photovoltaic properties are summarized in **Table 8**. The internal resistance (*R*IR,) can be calculated by the sum obtained from each resistance, *R*IR = *R*<sup>0</sup> + *R*<sup>1</sup> + *R*<sup>2</sup> + *R*3. Although LPAH counter electrode has somewhat lower catalytic property compared with the Pt counter electrode, *V*oc, fill factor is close to Pt based DSSC electrode due to relatively similar *R*IR values. Finally, LPAH based DSSC show an overall energy conversion efficiency of 9.3% without mask, which is higher than the 7.5% achieved for CB counter electrode devices reported recently [169]. Therefore, we believe LPAH is a good candidate as a next catalytic material.
