A study of the optical band gap of lithium tungsten trioxide thin films

Conference · Mon Jan 01 00:00:00 EST 1990

OSTI ID:6226280

Berera, G; Goldner, R B; Arntz, F O; Wong, K K; Ciaccia, A; Welch, M; Haas, T E; Jauniskis, L

The insertion of lithium (lithiation) into tungsten trioxide results in the formation of the tungsten bronze Li{sub x}WO{sub 3}. Polycrystalline, rf sputter deposited thin films of Li{sub x}WO{sub 3} were investigated for their application in Smart Window Devices. The optical band gap studies of these films revealed the narrowing of the intrinsic band gap as a consequence of lithium insertion. The results suggest that the rigid band model, which is generally adopted in interpreting the electronic structure of the tungsten bronzes may not be applicable in Li{sub x}WO{sub 3}. 14 refs., 2 tabs.

• Research Organization: Tufts Univ., Medford, MA (USA). Electro-Optics Technology Center
• Sponsoring Organization: DOE/CE
• DOE Contract Number: FG03-85SF15927
• OSTI ID: 6226280
• Report Number(s): CONF-901273-2; ON: DE91006808
• Resource Relation: Conference: Materials Research Society meeting, Boston, MA (USA), Dec 1990
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
LITHIUM TUNGSTATES
ELECTRONIC STRUCTURE
ELECTROCHROMISM
FERMI LEVEL
POLYCRYSTALS
SPUTTERING
THIN FILMS
ALKALI METAL COMPOUNDS
CRYSTALS
ELECTRO-OPTICAL EFFECTS
ENERGY LEVELS
FILMS
LITHIUM COMPOUNDS
TUNGSTATES
656002* - Condensed Matter Physics- General Techniques in Condensed Matter- (1987-)
360603 - Materials- Properties