Aging of nano-morphology, resistivity, and far-infrared absorption in gold-black

Gold black is a highly porous, extremely fragile, infrared-absorbing film used primarily as a coating for bolometers. Long term stability of its absorbance is a significant practical concern. This paper reports on the aging of morphological, electrical, and optical properties of gold black samples prepared with different initial porosities. An observed two-fold decrease in electrical resistance after 90 days at room-temperature is correlated with an increase in nano-crystalline grain size. Much larger resistance drops were observed after isothermal annealing at temperatures up to 100 °C. Aging and annealing tended to improve the far-infrared absorption. Samples with the highest initial porosity have the fastest structural relaxation.

[1]  J. Cox,et al.  Deposition and characterization of far-infrared absorbing gold black films. , 1993, Applied optics.

[2]  Shlomo Magdassi,et al.  Triggering the sintering of silver nanoparticles at room temperature. , 2010, ACS nano.

[3]  Wolfgang Ruppel,et al.  Black gold deposits as absorbers for far infrared radiation , 1996 .

[4]  N. Nelms,et al.  Focal plane array for the GERB instrument , 2004, SPIE Optical Systems Design.

[5]  M. Harmer,et al.  Electron microscopy studies of the thermal stability of gold nanoparticle arrays , 2009 .

[6]  R. Tilley,et al.  Real-time TEM and kinetic Monte Carlo studies of the coalescence of decahedral gold nanoparticles. , 2009, ACS nano.

[7]  David J. Bergman,et al.  The dielectric constant of a composite material—A problem in classical physics , 1978 .

[8]  N. Schell,et al.  The nanostructure evolution during and after magnetron deposition of Au films , 2003 .

[9]  W. Theiß,et al.  Determination of the effective dielectric function of silver powders produced by inert gas evaporation , 1992 .

[10]  M. Toney,et al.  How Nanoparticles Coalesce: An in Situ Study of Au Nanoparticle Aggregation and Grain Growth , 2011 .

[11]  J. Gardea-Torresdey,et al.  Structure shape and stability of nanometric sized particles , 2001 .

[12]  Jorge A. Ascencio,et al.  Melting behavior of nanometer sized gold isomers , 2001 .

[13]  O. Mazurin.  Relaxation phenomena in glass , 1977 .

[14]  Robert E. Peale,et al.  Stencil lithography of gold-black IR absorption coatings , 2014 .

[15]  Louis Harris,et al.  The Infrared Properties of Gold Smoke Deposits , 1952 .

[16]  Wolfgang Ruppel,et al.  Optical and electrical properties of black gold layers in the far infrared , 1999 .

[17]  J Dowson,et al.  Laser micromachining of goldblack coatings. , 2006, Applied optics.

[18]  Laszlo B. Kish,et al.  In situ electrical transport during isothermal annealing of nanocrystalline gold films , 2002 .

[19]  Benjamin M. Siegel,et al.  The Preparation and Optical Properties of Gold Blacks , 1948 .

[20]  M. Toney,et al.  Dominant role of grain boundary scattering in the resistivity of nanometric Cu films , 2009 .

[21]  Jeong Yong Lee,et al.  In situ atomic imaging of coalescence of Au nanoparticles on graphene: rotation and grain boundary migration. , 2013, Chemical communications.

[22]  J. D. Vries,et al.  CORRIGENDUM: Resistivity of thin Au films as a function of grain diameter and temperature , 1987 .

[23]  T. Kuan,et al.  Alteration of Cu conductivity in the size effect regime , 2004 .

[24]  C. Shek,et al.  An analysis of the grain growth kinetics in Mn2O3 nanocrystals , 2005 .

[25]  Louis Harris,et al.  The Transmittance and Reflectance of Gold Black Deposits in the 15- to 100-Micron Region , 1961 .

[26]  S. Kuebler,et al.  Nanoscale characterization of gold nanoparticles created by in situ reduction at a polymeric surface , 2013, Journal of microscopy.

[27]  Robert E. Peale,et al.  Patterning of oxide-hardened gold black by photolithography and metal lift-off , 2014 .

[28]  K. Suganuma,et al.  Room temperature sintering of Ag nanoparticles by drying solvent , 2008 .