Laser-induced metal deposition on semiconductors from liquid electrolytes

Abstract
Maskless deposition of gold and copper from electrolytesolutions onto n‐doped semiconductors(GaAs, Si) is investigated. The metaldeposits are found to have lateral dimensions of about 1 μm and are in barrier contact with the semiconductor. The proposed deposition mechanism is governed by the electric fields resulting from the Dember effect, the p‐n junction, and the thermal emf.