8/10/2019 Review of Ni-Cu Based Front Side Metallization for C-Si Solar Cells

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Ni-Cu Based Front Side

Metallization for Crystallize SiliconSolar Cells

Name: Vo Ngoc Phuong Anh

Student ID number: 14110206

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Contents

Process of c-Si Solar Cell Fabrication

Methods for Pre-metallization

Ni and Cu Plating techniques

References

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Process of c-Si Solar Cell Fabricat ion

Solar Cell Manufacturing Process Flow Chart [1]Solar Cell Manufacturing Process [5]

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Process of c-Si Solar Cell Fabricat ion

Solar cell structures composed of metallization

scheme based on Ni/Cu/Ag plating [2], [4]

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Methods fo r Pre-metall izat ion

There are a number of method forPatterning the ARC [3]:

Etch Resist and Wet Etching BasedMethods.

Direct Etching Based Methods.

Laser-Assisted Methods.

Mechanical Method for Patterning.

Schematic mask and etch sequence. Mask

patterning is done initially to open ARC followed by

a process of photoresist removal [2]

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Ni and Cu Plat ing techniques

The metallization technique involves two main steps [2]:

1. Ni Seed layer Formation.

2. Cu Electroplating technique.

Steps involved in

formation of the

metallization scheme

based on Ni/Cu/Sn or

Ag metallization

scheme [2]

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Ni Seed layer formation

Electroless plating [2]:The chemical reaction:

Step 1: (anodic reactrion)

Step 2: (cathodic reaction)

Sum:

Schematic of electroless plating

setup [3]

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Ni Seed layer formation

Light Induced Plating (LIP):

Schematic image of LIP system [6]

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Ni Seed layer formation

Laser Assisted Ni Deposition:

Schematic image of LIP system [6]

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Cu Electroplating technique

Cu electroplating is usually done by the LIPtechnique.

Reactions taking place at anode (Cu), electrolyte solution

(H2SO4/CuSO4) and cathode (substrate)

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Cu Electroplating technique

Schematic diagram of the light induced plating (LIP) based Cu

electroplating process

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References

[1].Annual Report on Form 10-K of Amtech Systems, Inc.(2007)

[2]. Atteq ur Rehman and Soo Hong Lee, Review of the Potential of the Ni/Cu

Plating Technique for Crystalline Silicon Solar Cells, Materials (2014), 7,

1318-1341.

[3]. Mehul C. Raval and Chetan S. Solanki, Review of Ni-Cu Based Front

Side Metallization for c-Si Solar Cells,Journal of Solar Energy (2013), Article

ID 183812, 20 pages.

[4]. Hariklia (Lili) Deligianni, Shafaat Ahmed, and Lubomyr T. Romankiw,The

Next Frontier: Electrodeposition for Solar Cell Fabrication, The

Electrochemical Society Interface (2011), 47-53.

[5]. http://www.think-solar-power.com/Photovoltaic-Solar-Power.html

[6]. J. Bartsch, A. Mondon, B.-J. Godejohann, M. Horteis, S.W. Glunz,

Advanced Front Side Metallization for Crystalline Silicon Solar Cells Basedon a Fully Planted Contact, Presentated at the 25th European PV Solar

Energy Conference and Exhibition (2010).

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