2 December 1985 Thermochromic Materials Research For Optical Switching Films
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A dual-ion-beam-sputtering (DIBS) deposition system is used to deposit doped vanadium dioxide (V1-xMx02), where M is a dopant that decreases the transition temperature (Tt) from that of stoichiometric V02. The objective is to synthesize a material that will passively switch between a heat- transmitting-and a heat-reflecting-state at specific design temperatures. The technique is reactive ion beam sputtering of vanadium and a dopant (separate beams) in a well controlled atmosphere of Ar with a partial pressure of O2. The films are deposited at elevated temperature (>700K) onto glass and sapphire substrates for spectrophotometric evaluation above and below Tt. The longer range goals of this research are to develop the material for: (1) thin film application to building glazings and (2) pigments for opaque wall coatings. The glazings will transmit and the walls will absorb solar energy when the V1-xMxO2 temperature (T) is low (T<Tt). At T>Tt, both glazings and walls will reflect the solar infrared.
© (1985) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
G. V. Jorgenson, G. V. Jorgenson, J. C. Lee, J. C. Lee, } "Thermochromic Materials Research For Optical Switching Films", Proc. SPIE 0562, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion IV, (2 December 1985); doi: 10.1117/12.966280; https://doi.org/10.1117/12.966280


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