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Citation: Yao Su-Wei, Zhang Guo-Qing, Guo He-Tong, ng Zheng-Lie. An Investigation on the Process of Laser Induced Electrodeposition of Copper on ρ-type Silicon[J]. Acta Physico-Chimica Sinica, ;1995, 11(08): 730-733. doi: 10.3866/PKU.WHXB19950812 shu

An Investigation on the Process of Laser Induced Electrodeposition of Copper on ρ-type Silicon

1.
Department of Applied Chemistry,Tianjin University,Tianjin 300072

Received Date: 4 July 1994
Available Online: 15 August 1995

Pretreatment of the substrate has obvious influence on the deposition. Both valence and conduction band reactions which cause the electrodeposition of Cu2+ can take place. Since ECu2+, the most probable energy level of Cu2+ is higher than the Ev of p-Si, a process including thermal excitation of electron from Ev to surface states level, and then to Cu2+ may be the probable charge transfer mechanism. During the laser induced selective deposition process, Iph ~ t curves are used to monitor the nuclei formation and growth. Besides an exponential decline in Iph, which is due to an increase in thickness of the deposits, some discontinuous current peaks owing to new nuclei formation on bare substrate are observed.
- ρ-type silicon,
- Laser,
- Electrodepostion,
- Copper
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