Hydrogen-induced electrical and optical switching in Pd capped Pr nanoparticle layers
- 45 Downloads
In this study, modification in the properties of hydrogen-induced switchable mirror based on Pr nanoparticle layers is reported. The reversible changes in hydrogen-induced electrical and optical properties of Pd capped Pr nanoparticle layers have been studied as a function of hydrogenation time and compared with the conventional device based on Pd capped Pr thin films. Faster electrical and optical response, higher optical contrast and presence of single absorption edge corresponding to Pr trihydride state in hydrogen loaded state have been observed in the case of nanoparticle layers. The improvement in the electrical and optical properties have been explained in terms of blue shift in the absorption edge due to quantum confinement effect, larger number of interparticle boundaries, presence of defects, loose adhesion to the substrate and enhanced surface to volume atom ratio at nanodimension.
KeywordsPraseodymium nanoparticles switchable mirror electrical and optical properties
Unable to display preview. Download preview PDF.
- Aruna I, Malhotra L K and Mehta B R 2006 Handbook on the phys. and chem. of rare earths (eds) K A Gschneidner et al (The Netherlands: North-Holland) 36 pp 83, 228Google Scholar
- Giebels I A M E, Isidorsson J and Griessen R 2004 Phys. Rev. B69 205111Google Scholar
- Griessen R 2001 Europhys. News 32 Google Scholar
- Kala S and Mehta B R 2007b J. Appl. Phys. 101 124312Google Scholar
- Maissel L I and Glang R 1970 Handbook of thin film technology (New York: McGraw-Hill Book Company)Google Scholar
- Ng K K, Zhang F C, Anisimov V I and Rice T M 1999 Phys. Rev. B59 5398Google Scholar
- Peterman D J, Waver J H and Peterson D T 1981 Phys. Rev. B3 3903Google Scholar
- Waver J H, Rosei R and Peterson D T 1979 Phys. Rev. B19 4855Google Scholar