This document summarizes the patents and publications of Serdar Aksu. It lists 12 issued patents, 21 journal publications, 25 published patent applications, and 21 conference publications. The patents and publications relate primarily to thin film solar cell materials and electrodeposition techniques for manufacturing compound semiconductor absorber layers.

1. Serdar Aksu
Patents and Publications
• 12 issued patents
• 21 journal publications
• 25 published patent applications
• 21 conference publications
Updated in April, 2012
1

2. PATENTS-1:
1. Serdar Aksu, Yuriy Matus, Rasmi Das, Mustafa Pinarbasi
Reaction Methods to Form Group IBIIIAVIA Thin Film Solar Cell Absorbers
US Patent, No: 8,153,469, published on April 10, 2012
2. Serdar Aksu, Jiaxiong Wang, Bulent M. Basol
Electroplating Method for Depositing Continuous Thin Layers of Indium or
Gallium Rich Materials
US Patent, No: 8,092,667, published on January 10, 2012.
3. Jiaxiong Wang, Serdar Aksu and Bulent M. Basol
Electroplating Methods and Chemistries for Deposition of Group IIIA-Group VIa
Thin Films
US Patent, No: 8,066,865, published on November 29, 2011.
4. Yongbong Han, Serdar Aksu, and Bulent M. Basol
Electrodeposition Technique and Apparatus to Form Selenium Containing Layers
US Patent, No: 8,066,863, published on November 29, 2011.
2

3. PATENTS-2:
5. Jiaxiong Wang, Serdar Aksu and Bulent M. Basol
Gallium Electroplating Methods and Electrolytes Employing Mixed Solvents
US Patent, No: 7,951,280, published on May 31, 2011.
6. Bulent M. Basol and Serdar Aksu
Composition Control for Photovoltaic Thin Film Manufacturing
US Patent, No: 7,897,416, published on March 1, 2011.
7. Serdar Aksu, Jiaxiong Wang, Bulent M. Basol
Electroplating Methods and Chemistries for Deposition of Copper-Indium-Gallium
Containing Thin Films
US Patent, No: 7,892,413, published on February 22, 2011.
8. Mustafa Pinarbasi, Serdar Aksu, Bulent M. Basol
Method to Improve Flexible Foil Substrate for Thin Film Solar Cell Applications
US Patent, No: 7,824,947, published on November 2, 2010.
3

4. PATENTS-3:
9. Bulent M. Basol and Serdar Aksu
Composition Control for Photovoltaic Thin Film Manufacturing
US Patent, No: 7,736,913, published on June 15, 2010.
10. Serdar Aksu, and Bulent M. Basol
Contact Layers for Thin Film Solar Cells Employing Group IBIIIAVIA Compound
Absorbers
US Patent, No: 7,713,773, published on May 10, 2010.
11. Serdar Aksu, Jiaxiong Wang, and Bulent M. Basol
Efficient Gallium Thin Film Electroplating Methods and Chemistries
US Patent, No: 7,507,321, published on March 24, 2009.
12. Cyprian Uzoh, Serdar Aksu and Bulent Basol
Method of Electroplating Copper Layers with Flat Topography
US Patent, No: 7,195,700, published on March 27, 2007.
4

5. JOURNAL PUBLICATIONS-1:
1. Serdar Aksu, Emin Bacaksiz, Salih Yilmaz, Ismail Polat, Mustafa Altunbas, Melek
Turksoy, Ramazan Topkaya and Kemal Ozdogan
Influence of the annealing atmosphere on structural, optical and magnetic properties of
Co-doped ZnO microrods
Physica E, http://dx.doi.org/10.1016/j.bbr.2011.03.031 2012.
2. Ismail Polat, Serdar Aksu, Mustafa Altunbas, and Emin Bacaksız
The Influence of Diffusion Temperature on the Structural, Optical, and Magnetic
Properties of Nickel-Doped Zinc Oxysulfide Thin Films
Physica Status Solidi A, Vol. 209, No:1, pp. 160–166, 2012.
3. Serdar Aksu, Sarah Lastella, Alan Kleiman-Shwarsctein, Mustafa Pinarbasi
Electrodeposition of Novel Precursor Structures for Efficient Copper Indium Gallium
Selenide (CIGS) Films
Electrochemical Society Transactions, Vol. 35 No: 21, pp. 33-38, 2011.
4. Ismail Polat, Serdar Aksu, Mustafa Altunbas, and Emin Bacaksız
Microstructural, Optical and Magnetic Properties of Cobalt-Doped Zinc Oxysulfide
Thin Films
Materials Chemistry and Physics, Vol. 130, No: 1-2, pp. 800-805, 2011.
5

6. JOURNAL PUBLICATIONS-2:
5. Serdar Aksu, Emin Bacaksiz, Mehmet Parlak, Salih Yılmaz, Ismail Polat, Mustafa
Altunbas, Melek Turksoy, Ramazan Topkaya and Kemal Ozdogan
Structural, Optical and Magnetic Properties of Mn Diffusion-Doped CdS Thin Films
Prepared by Vacuum Evaporation
Materials Chemistry and Physics, Vol. 130, No: 1-2, pp. 340– 345, 2011.
6. Ismail Polat, Serdar Aksu, Mustafa Altunbas, Salih Yılmaz and Emin Bacaksız
The Influence of Diffusion Temperature on the Structural, Optical and Magnetic
Properties of Manganese-Doped Zinc Oxysulfide Thin Films
Journal of Solid State Chemistry, Vol. 184, pp. 683–689, 2011.
7. Emin Bacaksiz, Serdar Aksu, Guven Cankaya, Salih Yilmaz, Ismail Polat, Tayfur
Kucukomeroglu, Ahmet Varilci
Fabrication of p-Type CuSCN/n-Type Micro-Structured ZnO Heterojunction Structures
Thin Solid Films, Vol. 519, pp. 3679–3685, 2011.
8. Emin Bacaksiz, Serdar Aksu, Salih Yilmaz, Mehmet Parlak, and Mustafa Altunbas
Structural, Optical and Electrical Properties of Al-doped ZnO Microrods Prepared by
Spray Pyrolysis
Thin Solid Films, Vol. 518, No: 15, pp. 4076-4080, 2010.
6

7. JOURNAL PUBLICATIONS-3:
9. Emin Bacaksiz, Serdar Aksu, Nilgun Ozer, Murat Tomakin, and Adem Ozcelik
The influence of Substrate Temperature on the Morphology, Optical and Electrical
Properties of Thermal-Evaporated ZnTe Thin Films
Applied Surface Science, Vol. 256, No: 5, pp. 1566-1572, 2009.
10. Emin Bacaksiz, Serdar Aksu, Ismail Polat, Salih Yılmaz, and Mustafa Altunbas
The Influence of Substrate Temperature on the Morphology, Optical and Electrical
Properties of Thermal-Evaporated ZnSe Thin Films
Journal of Alloys and Compounds, Vol. 487, pp. 280-285, 2009.
11. Serdar Aksu
Electrochemical Equilibria of Copper in Aqueous Phosphoric Acid Solutions
Journal of the Electrochemical Society, Vol.156, No: 11 pp. C387-C394, 2009.
12. Serdar Aksu
Potential-pH Diagrams of Copper for the Planarization Slurries with Different
Complexing Agents
The Electrochemical Society Transactions, Vol. 19 No: 7, pp.15-24, 2009.
7

8. JOURNAL PUBLICATIONS-4:
13. Serdar Aksu, Jiaxiong Wang, and Bulent M. Basol
Electrodeposition of In–Se and Ga–Se Thin Films for Preparation of CIGS Solar Cells
Electrochemical Solid-State Letters, Vol. 12, No:5, pp. D33-D35, 2009.
14. Emin Bacaksiz, Serdar Aksu, Bulent Basol, Mustafa Altunbas, Mehmet Parlak, Ekrem
Yanmaz
Structural, Optical and Magnetic Properties of Zn1-xCoxO Thin Films Prepared by
Spray Pyrolysis
Thin Solid Films, Vol. 516, No. 21, pp. 7899-7902, 2008.
15. Serdar Aksu, Ismail Emesh, Cyprian Uzoh, and Bulent Basol
Electrochemical Mechanical Planarization (eCMP) of Copper Thin Films
The Electrochemical Society Transactions, Vol. 2, No. 6, pp. 417- 425, 2007.
16. Udaya Patri, Serdar Aksu, and S. V. Babu
Role of the Functional Groups of Complexing Agents in Copper Slurries
Journal of the Electrochemical Society, Vol. 153, No. 7, pp. G650-G659, 2006.
8

9. JOURNAL PUBLICATIONS-5:
17. Serdar Aksu
Electrochemistry of Copper in Aqueous Oxalic Acid Solutions
Journal of the Electrochemical Society, Vol. 152, No, 12, pp. G938-G943, 2005.
18. Serdar Aksu, Ling Wang, and Fiona M. Doyle
Effect of Hydrogen Peroxide on the Oxidation of Copper in CMP Slurries containing
Glycine
Journal of the Electrochemical Society, Vol. 150, No. 11, G718-G723, 2003.
19. Serdar Aksu and Fiona M. Doyle
Role of Glycine in the Chemical Mechanical Planarization (CMP) of Copper
Journal of the Electrochemical Society, Vol. 149, No.1, pp. G352-G361, 2002.
20. Serdar Aksu and Fiona M. Doyle
Electrochemistry of Copper in Aqueous Ethylenediamine Solutions
Journal of the Electrochemical Society, Vol. 149, No.1, pp. B340-B347, 2002.
21. Serdar Aksu and Fiona M. Doyle
Electrochemistry of Copper in Aqueous Glycine Solutions
Journal of the Electrochemical Society, Vol. 148, No.1, pp. B51-B57, 2001.
9

10. PUBLISHED PATENT APPLICATIONS-1:
1. Serdar Aksu, and Mustafa Pinarbasi
Electroplating Methods and Chemistries for CIGS Precursor Stacks with Conductive
Selenide Bottom Layer
U.S. Patent Application, No: 20120003786, published on January 5, 2012.
2. Jiaxiong Wang, Serdar Aksu, Bulent M. Basol
Gallium Electroplating Methods and Electrolytes Employing Mixed Solvents
U.S. Patent Application, No: 20110226630, published on September 22, 2011.
3. Serdar Aksu, Jiaxiong Wang, Bulent M. Basol
Electroplating Methods and Chemistries for Deposition of Copper-Indium-Gallium
Containing Thin Films
U.S. Patent Application, No: 20110180414, published on July 28, 2011.
4. Serdar Aksu, Yuriy Matus, Rasmi Das, and Mustafa Pinarbasi
Reaction Methods to Form Group IBIIIAVIA Thin Film Solar Cell Absorbers
U.S. Patent Application, No: 20110136293, published on June 9, 2011.
10

11. PUBLISHED PATENT APPLICATIONS-2:
5. Serdar Aksu, Jiaxiong Wang, Bulent M. Basol
Electrochemical Deposition Methods for Fabricating Group IBIIIAVIA Compound
Absorber Based Solar Cells
US Patent Application, No: 20110005586, published on January 13, 2011.
6. Bulent M. Basol and Serdar Aksu
Composition Control for Photovoltaic Thin film manufacturing
US Patent Application, No: 20100317129, published on December 16, 2010.
7. Serdar Aksu, Jiaxiong Wang, Mustafa Pinarbasi
Electroplating Methods and Chemistries for Deposition of Copper-Indium-Gallium
Containing Thin Films
US Patent Application, No: 20100200050, published on August 12, 2010.
8. Serdar Aksu, Jiaxiong Wang, Mustafa Pinarbasi
Electroplating Methods and Chemistries for Deposition of Copper-Indium-Gallium
Containing Thin Films
US Patent Application, No: 20100140101, published on June 10, 2010.
11

12. PUBLISHED PATENT APPLICATIONS-3:
9. Cyprian E. Uzoh, Serdar Aksu
Selenium Containing Electrodeposition Solution and Methods
US Patent Application, No: 20100140098, published on June 10, 2010.
10. Jiaxiong Wang, Serdar Aksu, Bulent M. Basol
Gallium Electroplating Methods and Electrolytes Employing Mixed Solvents
US Patent Application, No: 20100116678, published on May 13, 2010.
11. Serdar Aksu, Jiaxiong Wang, Bulent M. Basol
Electroplating Method for Depositing Continuous Thin Layers of Indium or Gallium
Rich Materials
US Patent Application, No: US Pat 20090315148, published on December 24, 2009.
12. Serdar Aksu, Jiaxiong Wang, Bulent M. Basol
Electroplating Methods and Chemistries for Deposition of Copper-Indium-Gallium
Containing Thin Films
US Patent Application, No: 20090283415, published on November 19, 2009.
12

13. PUBLISHED PATENT APPLICATIONS-4:
13. Jiaxiong Wang, Serdar Aksu, Bulent M. Basol
Electroplating Methods and Chemistries for Deposition of Group IIIB-Group VIA Thin
Films
US Patent Application, No: 20090283414, published on November 19, 2009.
14. Serdar Aksu, Yongbong Han, Bulent M. Basol
Selenium Electroplating Chemistries and Methods
US Patent Application, No: 20090283411, published on November 19, 2009.
15. Mustafa M. Pinarbasi, Serdar Aksu and Bulent M. Basol
Method to Improve Flexible Foil Substrate for Thin Film Solar Cell Applications
US Patent Application, No: 20090203165, published on August 13, 2009.
16. Jiaxiong Wang, Serdar Aksu and Bulent M. Basol
Indium Electroplating Baths for Thin Layer Deposition
US Patent Application, No: 20090188808, published on July 30, 2009.
13

14. PUBLISHED PATENT APPLICATIONS-5:
17. Serdar Aksu, Jiaxiong Wang, and Bulent M. Basol
Efficient Gallium Thin Film Electroplating Methods and Chemistries
US Patent Application No: 20090173634, published on July 9, 2009.
18. Bulent M. Basol, Serdar Aksu, and Yuriy Matus
Doping Techniques for Group IBIIIAVIA Compound Layers
US Patent Application, No: 20080169025, published on July 17, 2008.
19. Yongbong Han, Serdar Aksu, and Bulent M. Basol
Electrodeposition Technique and Apparatus to Form Selenium Containing Layers
US Patent Application, No: 20080135415, published on June 12, 2008.
20. Serdar Aksu, Jiaxiong Wang, and Bulent M. Basol
Efficient Gallium Thin Film Electroplating Methods and Chemistries
US Patent Application No: 20070272558, published on November 29, 2007.
14

15. PUBLISHED PATENT APPLICATIONS-6:
21. Bulent M. Basol and Serdar Aksu
Composition Control for Roll-to-Roll Processed Photovoltaic Films
US Patent Application, No: 20070227633, published on October 4, 2007.
22. Serdar Aksu and Bulent M. Basol
Composition Control for Photovoltaic Thin Film Manufacturing
US Patent Application, No: 20070232065, published on October 4, 2007.
23. David Boyers and Serdar Aksu
Copper Processing Using an Ozone-Solvent Solution
US Patent Application No: 20060084260, published on April 20, 2006.
24. Cyprian Uzoh, Serdar Aksu and Bulent Basol
Method of Electroplating Copper Layers with Flat Topography
US Patent Application No: 20040265562, published on December 30, 2004.
25. Jeffrey Bogart, Hung-Ming Wang, Serkan Erdemli, Serdar Aksu, Erol C. Basol, Manuel
R. Cornejo, Bulent M. Basol
Process and Apparatus for Air Bubble Removal during Electrochemical Processing
US Patent Application No: 20040182715, published on September 23, 2004.
15

16. CONFERENCE PUBLICATIONS-1:
1. Serdar Aksu and Mustafa Pinarbasi
An Overview of the Roll-to-Roll Electrodeposition-Based CIGS Technology
Proc. SolarCon CPTIC Conference, Shanghai, China, March 2012, In Press.
2. Serdar Aksu and Mustafa Pinarbasi
Electrodeposition Methods and Chemistries for Deposition of CIGS Precursor Thin
Films
Proc. 37th IEEE PVSC, Seattle, WA June 2011, In Press.
3. Mustafa Pinarbasi, Serdar Aksu, Deepak Nayak, Eric Lee, Burak Metin, Sankaran
Jayanarayanan, Norbert Staud, James Freitag, Thomas Boone, Howard Zolla, and Jorge
Vasquez
Indoor and Outdoor Testing of Low Weight Flexible CIGS Modules
Proc. 37th IEEE PVSC, Seattle, WA June 2011, In Press.
4. A. Kleiman-Shwarsctein, S. Aksu, T. Cetiner, S. Lastella, and M. Pinarbasi
Analysis and Control of Plating Baths in the Electrodeposition of Copper Indium
Gallium Selenide (CIGS) Films with Ion Chromatography
MRS Meeting, San Francisco, CA, April 2011, in press.
16

17. CONFERENCE PUBLICATIONS-2:
5. M. Pinarbasi, S. Aksu, J. Freitag, T. Boone, H. Zolla, J. Vasquez, D. Nayak, E. Lee, T.
Wang, J. Abushama, B. Metin
Roll-to-Roll Manufacturing of Flexible CIGS Cells and Panels
Proc. 25th European PVSEC, Valencia, Spain 2010, 2818.
6. S. Aksu and M. Pinarbasi
Electrodeposition of Cu-In-Ga Films for the Preparation of CIGS Solar Cells
Proc. 35th IEEE PVSC, Honolulu, HI (2010) 794.
7. M. Pinarbasi, S. Aksu, J. Freitag, T. Boone, H. Zolla, J. Vasquez, D. Nayak, E. Lee, T.
Wang, J. Abushama, B. Metin
Flexible Cells and Modules Produced Using Roll-to-Roll Electroplating Approach
Proc. 35th IEEE PVSC, Honolulu, HI (2010) 169.
8. Serdar Aksu, Jiaxiong Wang, Mustafa Pinarbasi
Electrodeposition of CIGS Precursor Layers from Alkaline Electrolytes
MRS Meeting, San Francisco, April 2010
17

18. CONFERENCE PUBLICATIONS-3:
9. Serdar Aksu
Role of Phosphoric Acid in Copper Electrochemical Mechanical Planarization Slurries
MRS Proceedings Volume 1157 pp. 1157-E12-03, 2009.
10. Bulent M. Basol, Mustafa Pinarbasi, Serdar Aksu, James Freitag, Pedro Gonzalez, Todd
Johnson, Yuriy Matus, Burak Metin, Mux Narasimhan, Depaak Nayak, G. Norsworthy,
David Soltz, John Wang, Tony Wang, and Howie Zolla
Status of Electroplating based CIGS Technology Development
Proc. 34th IEEE, Photovoltaic Specialists Conference, Philadelphia, May 2009, page
2310-2315
11. Serdar Aksu, Jiaxiong Wang and Bulent Basol
Electrochemical Deposition of (In,Ga)-Se Thin Films
MRS 2008 Fall Meeting, Boston MA, December 2-4, 2008.
12. Bulent M. Basol, Mustafa Pinarbasi, Serdar Aksu, Todd Johnson and Jiaxiong Wang
Electroplating Based CIGS Technology for Roll-to-Roll Manufacturing
Proc. 23rd European Photovoltaic Solar Energy Conference, Valencia, Spain, September
2008.
18

19. CONFERENCE PUBLICATIONS-4:
13. Serdar Aksu, Ismail Emesh, and Bulent Basol
Electrochemical Mechanical Planarization (eCMP) of Copper Overburden
11th International Conference on Chemical-Mechanical Polish (CMP) Planarization for
ULSI Multilevel Interconnection (CMP-MIC), Fremont, CA, Feb. 21-23, 2006.
14. Serdar Aksu
Potential-pH Diagrams of Interest to Chemical Mechanical Planarization of Copper
Thin Films
MRS Spring 2005 Meeting, MRS Symposium Proceedings, No 867, San Francisco, CA,
March 28-April 1, 2005.
15. Jianfeng J. Luo, Serdar Aksu, and David A. Dornfeld
Material Removal Regions in Chemical Mechanical Planarization (CMP): Coupling
Effects of Slurry Chemicals, Abrasive Size Distribution and Wafer-Pad Contact area
7th International Conference on Chemical-Mechanical Polish (CMP) Planarization for
ULSI Multilevel Interconnection (CMP-MIC), Santa Clara, CA, Feb. 25- March 1, 2002.
16. Serdar Aksu and Fiona M. Doyle
Chemical Mechanical Planarization (CMP) of Copper Using Glycine Hydrogen
Peroxide Slurries
201st Meeting of Electrochemical Society, Philadelphia, PA, pp. 12-17, May, 2002. 19

20. CONFERENCE PUBLICATIONS-5:
17. Serdar Aksu and Fiona M. Doyle
Electrochemistry of Copper in Chemical Mechanical Planarization Slurries Containing
Glycine
18th Int. IEEE VLSI Multilevel Interconnection Conference (VMIC), Santa Clara, CA,
Sept. 24-26, 2001.
18. Serdar Aksu and Fiona M. Doyle
The Role of EDTA and Glycine in the Chemical Mechanical Planarization (CMP) of
Copper In Proc. 2nd International Conference on Processing Materials for Properties
Editors: B. Mishra and C. Yamauchi, pp. 217-222, San Francisco, November 5-8, 2000.
19. Serdar Aksu and Fiona M. Doyle
Potential-pH Diagrams for Copper in Aqueous Solutions of Various Organic
Complexing Agents
In Proc. 197th Meeting of Electrochemical Society; Electrochemistry and Metal
Processing Editors: R. Woods and F. M. Doyle, pp. 258-269, Toronto, Canada May 14-
18, 2000.
20

21. CONFERENCE PUBLICATIONS-6:
20. Baki Yarar and Serdar Aksu
Quantification of the Roles of Surface Heterogeneity and Roughness in the
Establishment of the Critical Surface Tension of Wetting of Hydrophobic Solids
In Proc. XX International Mineral Processing CongressEditors: Heinz Hoberg and Harro
von Blottnitz, Vol. 3, pp. 41-51, Aachen, Germany, 1997.
21. Meftuni Yekeler, Serdar Aksu, and Baki Yarar
Model for the Prediction of the Critical Surface Tension of Wetting of Low Surface
Energy Minerals
In Proc. 1st UBC-McGill Bi-Annual International Symposium on Fundamentals of
Mineral Processing Editors: J.S. Laskowski and G.W. Poling, pp. 17-27, Vancouver,
British Colombia, 1995.
21