The unique optical, electrical and mechanical properties as well as solution processability of carbon nanotubes render it a promising candidate for the next generation electronic devices. The development of technologies that can simultaneously optimize several key and, in some cases orthogonal, parameters such as conductivity, transparency, morphology and mechanical properties is very challenging yet of vital importance. We have developed a superacid slide casting method to achieve that goal. In addition, studies that combine carbon nanotube with silicon, a well-characterized semiconductor, could provide valuable insight into how photo-generation, transport, and dissociation of excitons and charge carriers function in large ensembles of CNTs. Optimizing this interface could serve as a platform for many next generation solar cell devices including CNT/polymer, carbon/polymer, and all carbon solar cells.