title: Note: A variable temperature cell for spectroscopy of thin films.
abstract: We report the design and construction of a cell that enables precisely controlled measurement of UV∕Vis spectra of thin films on transparent substrates at temperatures up to 800 K. The dimensions of the setup are accommodated by a standard Varian Cary 5E spectrophotometer allowing for widespread use in standard laboratory settings. The cell also fits in a Bio-Rad IR-spectrometer. The cell is constructed with an outer water cooled heat shield of aluminum and an inner sample holder with heating element, thermo-resistor and windows, made from nickel coated copper. The cell can operate both in air, and with an inert gas filling. We illustrate the utility of the cell by characterization of three commercially available near infrared absorbers that are commonly used for laser welding of plastics and are known to possess high thermal stability.
authors: Department of Chemistry, University of Copenhagen, Copenhagen Ø, Denmark. theisn@kiku.dk
authors: T
authors: T
authors: Brock-Nannestad
authors: C B
authors: CB
authors: Nielsen
authors: H Ø
authors: HØ
authors: Bak
authors: M
authors: M
authors: Pittelkow