Electrochemical Studies of One-Step Electrodeposition of Cu-Sn-Zn Layers from Aqueous Electrolytes for Photovoltaic Applications

被引：43

作者：

Gougaud, Corentin ^{[1
]}

Rai, Deepesh ^{[1
]}

Delbos, Sebastien ^{[1
]}

Chassaing, Elisabeth ^{[1
]}

Lincot, Daniel ^{[1
]}

机构：

[1] Chim ParisTech, IRDEP, CNRS, EDF,UMR 7174, F-78400 Chatou, France

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2013年 / 160卷 / 10期

关键词：

FILM SOLAR-CELLS; THIN-FILM; CITRATE; MICROBALANCE; ALLOYS;

D O I：

10.1149/2.105310jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

Copper, tin and zinc have been co-electrodeposited on Mo-coated glass substrates from an aqueous acid sulfate solution at room temperature with the aim of preparing kesterite absorber layers for solar devices. The solution contains copper, tin and zinc sulfate, potassium sulfate and sodium citrate at pH = 4.75. The effect of two complexing agents (sodium citrate and tartaric acid) is characterized by solution chemistry analysis, by voltammetry using a rotating disk electrode and an electrochemical quartz crystal microbalance. A deposition process is developed to co-deposit the three metals with the appropriate composition (copper poor and zinc rich). Deposition kinetics has been investigated. The composition can be tuned by mass transport control and by deposition potential. Composition, morphology and structure are characterized by Inductively Coupled Plasma analysis, Energy Dispersive X-ray Spectrometry coupled to Field Emission Scanning Electron Microscopy and X-ray Diffraction. The co-deposited layers are porous due to dendritic growth. After annealing at 530 degrees C during 15 min in a selenium atmosphere, a 5.8% solar cell efficiency has been obtained. (C) 2013 The Electrochemical Society. All rights reserved.

引用

页码：D485 / D494

页数：10

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