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Optimization of metal‐based multilayers for transparent heat mirrors
Author(s) -
Valkonen E.,
Karlsson B.
Publication year - 1987
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440110309
Subject(s) - transmittance , materials science , absorptance , visible spectrum , optics , optoelectronics , solar energy , transmission (telecommunications) , metal , wavelength , reflectivity , metallurgy , physics , electrical engineering , engineering , ecology , biology
Multilayer calculations by conventional matrix methods for dielectricum/noble metal/dielectricum systems on glass have been performed. The aim has been to maximize the integrated parameters for solar transmission, T sol , and transmission of visible light, T eye We have found that Ag is superior for maximizing the transmittance over the narrow visible wavelength range owing to the low internal absorptance. When solar energy transmission is considered multilayers based on Au are the best choice for metal film thicknesses above 15 nm. For thinner films, Ag is still to be preferred.