Akram A. Khosroabadi, Palash Gangopadhyay, Binh Duong, Jayan Thomas, Ajaya K. Sigdel, Joseph J. Berry, Thomas Gennett, N. Peyghambarian, Robert A. Norwood, Phys. Status Solidi A, 2013, early view. "Fabrication, Electrical and Optical Properties of Silver, Indium Tin Oxide (ITO), and Indium Zinc Oxide (IZO) Nanostructure Arrays."
Talia S. Gershon, Ajaya K. Sigdel, Andrew T. Marin, Maikel F.A.M. van Hest, David S. Ginley, Richard H. Friend, Judith L. MacManus-Driscoll, Joseph J. Berry. Thin Solid Films, 2013, In Press, Corrected Proof. "Improved Fill Factors in Solution-processed ZnO/Cu2O Photovoltaics."
Anuradha Bulusu, Sergio A Paniagua, Bradley A. MacLeod, Ajaya K Sigdel, Joseph J Berry, Dana C. Olson, Seth R. Marder, Samuel Graham, 2013, Langmuir, 2013, 29(12), 3935–3942. "Efficient Modification of Metal Oxide Surfaces With Phosphonic Acids, By Spray Coating."
Erin L. Ratcliff, Andres Garcia, Sergio A. Paniagua, Sarah R. Cowan, Anthony J. Giordano, David S. Ginley, Seth R. Marder, Joseph J. Berry, Dana C. Olson, Adv. Energy Mater., Early View, 2013. "Investigating the Influence of Interfacial Contact Properties on Open Circuit Voltages in Organic Photovoltaic Performance: Work Function Versus Selectivity."
Matthew Gliboff, Lingzi Sang, Kristina M Knesting, Matthew C Schalnat, Anoma Mudalige, Erin L Ratcliff, Hong Li, Ajaya K Sigdel, Anthony J Giordano, Joseph J Berry, Dennis Nordlund, Gerald T. Seidler, Jean-Luc Bredas, Seth R. Marder, Jeanne E Pemberton, David S Ginger, Langmuir, 2013, 29(7), 2166-2174. “Orientation of Phenylphosphonic Acid Self-assembled Monolayers on a Transparent Conductive Oxide: A Combined NEXAFS, PM-IRRAS and DFT Study.”
Paul F. Ndione, Andres Garcia, N. Edwin Widjonarko, Ajaya K. Sigdel, K. Xerxes Steirer, Dana C. Olson, Philip A. Parilla, David S. Ginley, Neal R. Armstrong, Robin E. Richards, Erin L. Ratcliff, Joseph J. Berry, Adv. Energy Mater., 2013, 3(4), 524–531. "Highly-Tunable Nickel Cobalt Oxide as a Low-Temperature P-Type Contact in Organic Photovoltaic Devices."
Ajaya K. Sigdel, Paul F. Ndione, John D. Perkins, Thomas Gennett, Maikel F. A. M. van Hest, Sean E. Shaheen, David S. Ginley, Joseph J. Berry, J. Appl. Phys., 2012, 111, 093718. "Radio-frequency superimposed direct current magnetron sputtered Ga:ZnO transparent conducting thin films."
Erin L. Ratcliff, Ajaya K. Sigdel, Mariola R. Macech, Kenneth Nebesny, Paul A. Lee, David S. Ginley, Neal R. Armstrong, Joseph J. Berry, Thin Solid Films, 2012, 520(17), 5652–5663. "Surface composition, work function, and electrochemical characteristics of gallium-doped zinc oxide."
Hyeunseok Cheun, Canek Fuentes-Hernandez, Jaewon Shim, Yunnan Fang, Ye Cai, Hong Li, Ajaya K. Sigdel, Jens Meyer, Julia Maibach, Amir Dindar, Yinhua Zhou, Joseph J. Berry, Jean-Luc Bredas, Antoine Kahn, Kenneth H. Sandhage, Bernard Kippelen, Advanced Functional Materials, 2012, 22(7), 1531–1538. “Oriented Growth of Al2O3:ZnO Nanolaminates for Use as Electron-Selective Electrodes in Inverted Polymer Solar Cells.”
Scott R. Hammond, Jens Meyer, N. Edwin Widjonarko, Paul F. Ndione, Ajaya K. Sigdel, Andrés Garcia, Alexander Miedaner, Matthew T. Lloyd, Antoine Kahn, David S. Ginley, Joseph J. Berry, Dana C. Olson, J. Mater. Chem., 2012, 22, 3249-3254. "Low-temperature, solution-processed molybdenum oxide hole-collection layer for organic photovoltaics."
N. Edwin Widjonarko, Erin L. Ratcliff, Craig L. Perkins, Ajaya K. Sigdel, Andriy Zakutayev, Paul F. Ndione, Dane T. Gillaspie, David S. Ginley, Dana C. Olson, Joseph J. Berry, Thin Solid Films, 2012, 520(10), 3813-3818.
"Sputtered nickel oxide thin film for efficient hole transport layer in polymer-fullerene bulk-heterojunction organic solar cell."
Erin L. Ratcliff, Jens Meyer, K. Xerxes Steirer, Andres Garcia, Joseph J. Berry, David S. Ginley, Dana C. Olson, Antoine Kahn, Neal R. Armstrong, Chem. Mater., 2011, 23 (22), 4988–5000. "Evidence for near-Surface NiOOH Species in Solution-Processed NiOx Selective Interlayer Materials: Impact on Energetics and the Performance of Polymer Bulk Heterojunction Photovoltaics."
A. Zakutayev, J.D. Perkins, P.A. Parilla, N.E. Widjonarko, A.K. Sigdel, J.J. Berry and D.S. Ginley, MRS Communications, 2011, 1, 23-26. “Zn–Ni–Co–O wide-band-gap p-type conductive oxides with high work functions.”
K. Xerxes Steirer, Paul F. Ndione, N. Edwin Widjonarko, Matthew T. Lloyd, Jens Meyer, Erin L. Ratcliff, Antoine Kahn, Neal R. Armstrong, Calvin J. Curtis, David S. Ginley, Joseph J. Berry, Dana C. Olson, Adv. Energy. Mater., 2011, 1(5), 813-820. "Enhanced Efficiency in Plastic Solar Cells via Energy Matched Solution Processed NiOx Interlayers"
Joseph J. Berry, N. Edwin Widjonarko, Brian A. Bailey, Ajaya K. Sigdel, David S. Ginley, and Dana C. Olson, IEEE Journal of Selected Topics in Quantum Electronics, 2010, 16(6), 1649-1655. “Surface Treatment of NiO Hole Transport Layers for Organic Solar Cells.”
K. Xerxes Steirer, N. Edwin Widjonarko, Ajaya K. Sigdel, Matthew T. Lloyd, David S. Ginley, Dana C. Olson, and Joseph J. Berry, 35th IEEE Photovoltaic Specialists Conference (PVSC), 2010, 000102-000104. “Optimization of Organic Photovoltaic Devices Using Tuned Mixed Metal Oxide Contact Layers.”
Ajaya K. Sigdel, Paul F. Ndione, Yi Ke, N. Edwin Widjonarko, John D. Perkins, Maikel F.A.M. van Hest, Sean E. Shaheen, Thomas Gennett, David S. Ginley, and Joseph J. Berry, 35th IEEE Photovoltaic Specialists Conference (PVSC), 2010, 003270-003274. "Superimposed RF/DC magnetron sputtering of transparent Ga:ZnO with high conductivity for photovoltaic contacts applications."
K. Xerxes Steirer, Jordan P. Chesin, N. Edwin Widjonarko, Joseph J. Berry, Alex Miedaner, David S. Ginley, and Dana C. Olson, Organic Electronics, 2010, 11(8), 1414-1418. “Solution deposited NiO thin-films as hole transport layers in organic photovoltaics.”
