The last few years have seen a tremendous progress in the research and development of high-efficiency silicon photovoltaics, evidenced by the establishment of the new world record at 26.33% by Kaneka, Japan (September 2016). Key enabling factors have been (i) the increasing quality of absorber materials, (ii) the development of carrier-selective passivating contacts and (iii) the design of device architectures towards maximal current generation. This symposium is focused on these three factors, and especially welcomes scientific and technological contributions aimed at increasing the conversion efficiency and/or lowering the material and fabrication costs by using silicon or silicon-enabled photovoltaic materials.
In greater detail:
Absorber materials: Wire-sawn Cz-grown monocrystalline silicon is currently the substrate of choice for high-efficiency silicon photovoltaics. Here we are especially interested in the development of new silicon-enabled absorbers (e.g. BaSi2, new allotropes of Si, etc.) and in alternative substrate fabrication methods such as layer separation/transfer or laser-/metal-induced crystallization aimed at the fabrication of kerfless and ultra-thin silicon substrates.
Carrier-selective passivating contacts: Contacts aimed at the selective collection of one type of carrier and avoidance of recombination of the opposite carrier type have been shown to be instrumental for high performance devices. Here we welcome contributions discussing their fundamental underlying principles (i.e. surface passivation, band structure, Fermi-level pinning at interfaces), deposition methods, new materials (including transparent electrodes and doping-free approaches) and new functionalities (temperature stability, transparency, local depositions).
Photon management: Micro-scale front texturing and dielectric spacer / metallic rear reflector constitute state-of-the-art light management techniques. Here we also look forward to contributions aimed at improved utilization of the solar spectrum, by novel optical designs, surface texturing, development of back-contacted architectures, and especially silicon-based tandem solar cells, combined with perovskite, III-V groups materials or alternative top cells.
Submissions are encouraged on the materials science, fabrication, device application, theory, simulation, and characterization in these emerging areas.