Modelling, Simulation and Control of Roll-to-Roll Physical Vapor Deposition Processes

Industrial vat orange dyes for organic field effect transistors

“…25,37 Both small molecules as well as polymeric semiconductors can be advantageously employed in large area R2R industrial production. 38 As has been demonstrated in the packaging industry, R2R processing is also compatible with vacuum deposition methods 39,40 for small organic molecules. While the vacuum processible molecules can be purified to a very high degree prior to the device fabrication, 41,42 solution-processed materials are more likely to present impurities.…”

Amorphous Silicon Thin-Film Solar Cells on Fabrics as Large-Scale Detectors for Textile Personal Protective Equipment in Active Laser Safety

“…Thin-film solar cells based on hydrated amorphous silicon (a-Si:H) [ 6 ] can be used as sensors on laser protection textiles and fabrics. Thin-film coatings on flexible substrates for solar cells [ 7 , 8 , 9 ] could be much cheaper than on solid substrates using mass production trough roll-to-roll technology [ 10 , 11 ], as demonstrated by the companies Uni-Solar (Auburn Hills, MN, USA) and Hyet Solar (Arnhem, The Netherlands). On DuPont™ Kapton ® HN (Dupont, Wilmington, DE, USA), an energy conversion efficiency of 11.2% has been achieved for a-Si:H/nanocrystalline-Si:H in a n-i-p substrate configuration by [ 12 ] and 8.7% for a-Si:H cells on polyethylene naphthalate (PEN) with low temperature processes [ 13 , 14 ].…”