Dr. Scott Darveau Dr. Darveau's Web Page email: Dr. Darveaus NCMN Homepage

Dr. Scott Darveau, Professor
Department Chair
Department of Chemistry-UNK
University of Nebraska - Kearney
417 Bruner Hall, 905 W. 25th St.
Kearney, Nebraska 66849-1150
office: (308) 865-8491
email: darveausa@unk.edu
Darveau's webpage

Current Research

Development and Characterization of Novel Thin Films for Use in Solar Cells
In collaboration with Christopher Exstrom from UNK, Natale Ianno and Rodney Soukup from the Electrical Engineering department at UNL, we are studying the optical characteristics of thin films of several materials including those from the CIS family (Copper Indium diSelinide), Iron Sulfide, and others.  We hope to create high-efficiency materials for solar energy conversion.
We have added the capability of high resolution surface Raman microscopy and ICP-OE atomic analysis to the research project. This technique will allow us to understand both the composition and behavior of the materials we create. In addition, we are able to create nanoparticulate precursers that can be annealed to create thin films.

Laser Spectroscopy/ Instrument Development
With the support of the University of Nebraska Foundation, we have an ongoing project that is integrating the use of lasers and laser spectroscopy in the chemistry curriculum. We have developed several laboratories for general chemistry that use a novel modular laser setup for the measurement of sulfate ion concentration in natural waters using laser nephelometry, the determination of rate order and rate constants for the acid-catalyzed hydrolysis of sucrose, and the determination of denaturation kinetics of proteins by free-radicals.
We have also constructed two advanced instruments: a spectrofluorimeter with CCD detection that uses either broadband or laser excitation sources and a time-resolved laser spectrofluorimeter, also capable of transient absorption measurements. Recent work with these instruments has included the investigation of porphyrin and metal-porphyrin fluorescence kinetics.

Recent Publications

.      “Air Sensitive, Photosensitive, Phase Pure Iron Pyrite Nanocrystal Thin Films for Photovoltaic Application,” Bi, Y.; Yuan, Y.; Exstrom, C.L.; Darveau, S.A.; Huang, J. Nano Letters, 11, 4953-4957 (2011).

  1. “CuIn1-xAlxS2 Thin Films Prepared by Sulfurization of Metallic Precursors,” Olejníček, J.; Slaymaker, L.E.; Darveau, S.A.; Exstrom, C.L.; Kment, Š.; Prabukanthan, P.; Ianno, N.J.; Soukup, R.J. Journal of Alloys and Compounds, 509, 10020-10024, 2011.
  2. “Properties of CuIn1-xGaxSe2 Films Prepared by the Rapid Thermal Annealing of Spray-deposited CuIn1-xGaxS2 and Se,”  Slaymaker, L.E.; Hoffman, N.M.; Ingersoll, M.A.; Jensen, M.R.; Olejníček, J.; Exstrom, C.L.; Darveau, S.A.; Soukup, R.J.; Ianno, N.J.; Sarkar, A.; Kment, Š., Materials Research Society Symposium Proceedings, 2011, 1324, DOI: 10.1557/opl.2011.1152
  3.  “Thermoelectric Properties of p-type CuInSe2 Chalcopyrites Enhanced by Introduction of Manganese,” Yao, J.; Takas, N.J.; Schliefert, M.L.*; Paprocki, D.S.*; Blanchard, P.E.R.; Mar, A.; Exstrom, C.L.; Darveau, S.A.; Poudeu, P.F.P.; Aitken, J.A., Physical Review B, 84, 075203. 2011.
  4.  “Formation of CuIn1-xAlxSe2 Thin Films Studied by Raman Scattering”, Olejnek, J.; Kamler, C.A.; Darveau, S.A.; Exstrom, C.L.; Slaymaker, L.E.*; Vandeventer, A.R.*; Ianno, N.J.; Soukup, R.J. Thin Solid Films, 519, 5329-5334 (2011).

6.      "A Non-vacuum Process for Preparing Nanocrystalline CuIn1-xGaxSe2 Materials Involving an Open-air Solvothermal Reaction." Olejnicek, J.; Kamler, C.A.; Mirasano, A.; Martinez-Skinner, A.L.; Ingersoll, M.A.; Exstrom, C.L.; Darveau, S.A.; Huguenin-Love, J.; Diaz, M.; Ianno, N.J.; Soukup, R.J.  Solar Energy Materials and Solar Cells , 2010, 94, 8-11.

7.       “Solvothermal Preparation, Processing, and Characterization of Nanocrystalline CuIn1-xAlxSe2 Materials,”  Exstrom, Christopher L.; Olejníček, Jirí; Darveau, Scott A.; Mirasano, Anatole; Paprocki, David S.; Schliefert, Megan L.; Ingersoll, Matt A.; Slaymaker, Laura E.; Soukup, Rodney J.; Ianno, Natale J.; Kamler, Chad A.   Materials Research Society Symposium Proceedings (2009), 1165, M05-03.

8.      “Problems with Synthesis of Chalcopyrite CuIn1-xBxSe2,” Olejníček, Jirí; Darveau, Scott A.; Exstrom, Christopher L.; Soukup, Rodney J.; Ianno, Natale J.; Kamler, Chad A.; Huguenin-Love, James L. Materials Science Forum (2009), 609, 33-36.

9.      “Thin Films Formed by Selenization of CuInxB1-x Precursors in Se Vapor” C. Kamler, N.J. Ianno, J. Huguenin-Love, R.J. Soukup, J. Olejnicek, S.A. Darveau, C.L. Exstrom, Solar Energy Materials and Solar Cells, 2009, 93, 45-50.

"A Non-vacuum Process for Preparing Nanocrystalline CuIn1-xGaxSe2 Materials Involving an Open-air Solvothermal Reaction." Olejnicek, J.; Kamler, C.A.; Mirasano, A.; Martinez-Skinner, A.L.; Ingersoll, M.A.; Exstrom, C.L.; Darveau, S.A.; Huguenin-Love, J.; Diaz, M.; Ianno, N.J.; Soukup, R.J.  Solar Energy Materials and Solar Cells (2009), in press, available online (doi: 10.1016/j.solmat.2009.03.024).

“Electron-atom superelastic scattering in magnesium at milli-electron volt energies” T. Baynard, A.C. Reber , R.F. Niedziela, S.A. Darveau, B. Prutzman, R. S. Berry, J. Phys. Chem. A, 111, (49) 12487-12494. (2007)

"Copper-Indium-Boron-Diselenide Absorber Materials," Ianno, N.J.; Soukup, R.J.; Exstrom, C.L. ; Darveau, S.A.. Material Research Society Symposium Proceedings. 2007, 1012 Y03.21.

“Thin Films of GeC Deposited Using a Unique Hollow Cathode Sputtering Technique”  R.J. Soukup, N.J. Ianno, J.S. Schrader, C.L. Exstrom, S.A. Darveau, R.N. Udey, V.L. Dalal, Solar Energy Materials and Solar Cells, 2006, 90, 2338-2345.