@article{8889, author = {V.V. Medvedev and N.N. Novikova and E. Zoethout}, title = {Salisbury screen with lossy nonconducting materials: Way to increase spectral selectivity of absorption}, abstract = {We present a modified Salisbury screen design in which the thin absorbing metal layer is replaced with a layer of nonconducting lossy material. The conditions for total absorption in such a structure are explained using a simplified analytical model and rigorous numerical calculations. For the proof-of-principle experiments, germanium/silicon bilayers deposited on aluminium substrates are designed and manufactured. The structures demonstrate nearly perfect absorption in the near-IR spectral range. Compared to conventional Salisbury screens, a lossy semiconductor top layer exhibits increased spectral selectivity of absorption. The wavelength of nearly perfect absorption remains tunable by optimizing the thicknesses of the lossy and transparent layers. }, year = {2022}, journal = {Thin Solid Films}, volume = {751}, pages = {139232}, month = {06/2022}, doi = {10.1016/j.tsf.2022.139232}, language = {eng}, }