Preparation and Studies of ZnO:Al Films and Powders
2004 (English)In: Journal of Sol-Gel Science and Technology, Vol. 31, 283-286 p.Article in journal (Refereed) Published
ZnO:Al (0–10 at% Al) films and powders were produced using acac-modified methoxy-ethoxide precursors, obtained from Zn(C2H5)2 and Al4(OPri)12. The conversion to oxide powders was monitored with TGA and DSC, and the phase development was investigated with XRD, FT-IR spectroscopy, and TEM-EDS. The gels obtained by air-hydrolysis contained ca 0.5 acac/(Zn + Al) and a small amount of water and hydroxyls. All residual groups were removed to yield ZnO:Al by heating to ca 400°C. The powders obtained at 400 and 500°C were elementally homogeneous, and consisted of hex-ZnO:Al as ca 3–5 (10 at% Al) or 20–30 (3 at% Al) nm sized crystalline particles. Spin-coating on quartz, Si/SiO2, and window glass, followed by heating to 500°C resulted in 150–200 nm thick films of hex-ZnO:Al. 500 nm thick films were obtained by repeating the deposition and heat-treatment twice. The films were visually very clear and the measured transmittance high over the 400–800 nm range (91–93% at 800 nm) for ca 300 nm thick films.
Place, publisher, year, edition, pages
2004. Vol. 31, 283-286 p.
ZnO:Al, film, powder, modified alkoxide route, gel to oxide conversion
IdentifiersURN: urn:nbn:se:uu:diva-67915DOI: doi:10.1023/B:JSST.0000048004.69033.1cOAI: oai:DiVA.org:uu-67915DiVA: diva2:95826