This symposium is dedicated to contributions in the development of novel materials and devices applied to the conversion of solar energy into electrical and chemical energy, i.e., new generation solar cells and the development of efficient solar driven routes to synthesize relevant solar fuels from molecules and CO2. Special emphasis in nanomaterials and devices applied for water splitting process assisted by photoelectrochemical cells (PEC), production of H2, alcohols or hydrocarbons from CO2 and water. The symposium is also dedicated to the development of novel (nano)materials, new architectures, interfaces and contacts in new generation solar cells (perovskite, organic and hybrid and dye sensitized solar cells and modules and Tandem) and fundamental investigations on the physical-chemical properties of this important class of semiconductors.