2011/12/06 by Matthew P. Genovese, Ian V. Lightcap, Prashant V. Kamat · 4 citations
Energy · Materials Science · #TiO2 Photocatalysis and Solar Cells #Quantum Dots Synthesis And Properties #Advanced Photocatalysis Techniques
paper · doi:10.1021/nn204381g
openalex publication_date 2011/12/06 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/02
A transformative approach is required to meet the demand of economically viable solar cell technology. By making use of recent advances in semiconductor nanocrystal research, we have now developed a one-coat solar paint for designing quantum dot solar cells. A binder-free paste consisting of CdS, CdSe, and TiO(2) semiconductor nanoparticles was prepared and applied to conducting glass surface and annealed at 473 K. The photoconversion behavior of these semiconductor film electrodes was evaluated in a photoelectrochemical cell consisting of graphene-Cu(2)S counter electrode and sulfide/polysulfide redox couple. Open-circuit voltage as high as 600 mV and short circuit current of 3.1 mA/cm(2) were obtained with CdS/TiO(2)-CdSe/TiO(2) electrodes. A power conversion efficiency exceeding 1% has been obtained for solar cells constructed using the simple conventional paint brush approach under ambient conditions. Whereas further improvements are necessary to develop strategies for large area, all solid state devices, this initial effort to prepare solar paint offers the advantages of simple design and economically viable next generation solar cells.