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Title: Communication—Light-Induced Plating of Aluminum on Silicon in a Lewis Acidic Chloroaluminate Ionic Liquid

Journal Article · · Journal of the Electrochemical Society
 [1];  [2];  [2];  [2];  [3]; ORCiD logo [3]
  1. Arizona State Univ., Tempe, AZ (United States); Arizona State Univ., Tempe, AZ (United States)
  2. Arizona State Univ., Tempe, AZ (United States)
  3. Wuhan Univ. (China)
+ Show Author Affiliations

Conventional electroplating of aluminum on silicon often requires a seed layer to overcome the high resistivity of the substrate. In this paper, light-induced plating of aluminum directly on a silicon substrate in an ionic liquid is reported. Without any seed layer, the deposited aluminum has good adhesion to the silicon surface. The resistivity of the aluminum deposits is as low as 4 × 10-6 Ω-cm, which is only about 1.5 times that of bulk aluminum. The suitable wavelength for the light source is 600 nm to 1,000 nm. The effect of plating temperature on morphology of the aluminum deposits is analyzed.

Research Organization:
Arizona State Univ., Tempe, AZ (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Grant/Contract Number:
EE0008150
OSTI ID:
1509874
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 9 Vol. 165; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (9)

Evolution of metal plating for silicon solar cell metallisation: Silicon solar cell metallisation journal May 2012
Electrochemical methods to analyse the light-induced plating process journal December 2009
Electrodeposition of aluminium in aluminium chloride/1-methyl-3-ethylimidazolium chloride journal July 1988
Ni/Cu metallization for low-cost high-efficiency PERC cells journal October 2002
Electrodeposition of aluminium from ionic liquids: Part I—electrodeposition and surface morphology of aluminium from aluminium chloride (AlCl3)–1-ethyl-3-methylimidazolium chloride ([EMIm]Cl) ionic liquids journal September 2006
Electrodeposition of Aluminum from the Aluminum Chloride-1-Methyl-3-ethylimidazolium Chloride Room Temperature Molten Salt + Benzene journal January 1997
Nucleation and Morphology Studies of Aluminum Deposited from an Ambient‐Temperature Chloroaluminate Molten Salt journal January 1992
The Electrodeposition of Aluminum from Nonaqueous Solutions at Room Temperature journal January 1951
Electroplating of Aluminium on Silicon in an Ionic Liquid journal January 2015

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Aluminum
Ionic liquid
Light-induced plating