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Zachary Holman

Zachary Holman

Trustees of ASU Professor, School of Electrical, Computer and Energy Engineering, Ira A. Fulton Schools of Engineering

zachary.holman@asu.edu

480-965-9959

School of Electrical, Computer, and Energy Engineering
Arizona State University
PO Box 875706
Tempe, AZ 85287-5706

Titles

  • Senior Sustainability Scientist, Julie Ann Wrigley Global Institute of Sustainability
  • Trustees of ASU Professor, School of Electrical, Computer and Energy Engineering, Ira A. Fulton Schools of Engineering
  • Assistant Professor, School of Electrical, Computer and Energy Engineering, Ira A. Fulton Schools of Engineering

Biography

Zachary Holman is an Assistant Professor and an ASU Trustees Professor in the School of Electrical, Computer, and Energy Engineering at Arizona State University. He received his Ph.D. in Mechanical Engineering from the University of Minnesota for his work on plasma-synthesized silicon and germanium nanocrystals, after which he spent two years as a postdoctoral researcher developing high-efficiency silicon solar cells at EPFL in Switzerland. His research group at ASU focuses on new materials and device designs for high-efficiency silicon solar cells and silicon-based tandem solar cells. He is also the co-founder of an advanced materials start-up company, Swift Coat.

 

Education

  • PhD, Mechanical Engineering (Nanoparticle Science and Engineering minor), University of Minnesota, 2010
  • BA, Physics, Reed College, 2005

Expertise

Journal Articles

2016

Yu, Z. J., B. M. Wheelwright, S. Manzoor and Z. C. Holman. 2016. Silicon wafers with optically specular surfaces formed by chemical polishing. Journal of Materials Science: Materials in Electronics 27(10):10,270-10,275. DOI: 10.1007/s10854-016-5108-y. (link )

Zhao, Y., M. Boccard, S. Liu, J. Becker, X. Zhao, C. M. Campbell, E. Suarez, M. B. Lassise, Z. C. Holman and Y. Zhang. 2016. Monocrystalline CdTe solar cells with open-circuit voltage over 1 V and efficiency of 17%. Nature Energy 1:Art. 16067 . DOI: 10.1038/nenergy.2016.67. (link )

2015

Boccard, M. and Z. C. Holman. 2015. Amorphous silicon carbide passivating layers for crystalline-silicon-based heterojunction solar cells. Journal of Applied Physics 110:065704. DOI: 10.1063/1.4928203. (link )

Terheiden, B., T. Ballmann, R. Horbelt, Y. Schiele, S. Seren, J. Ebser, G. Hahn, V. Mertens, M. B. Koentopp, M. Scherff, J. W. Muller, Z. C. Holman, A. Descoeudres, S. de Wolf, S. M. de Nicolas, J. Geissbuehler, C. Ballif, B. Weber, P. Saint-Cast, M. Rauer, C. Schmiga, S. W. Glunz, D. J. Morrison, S. Devenport, D. Antonelli, C. Busto, F. Grasso, F. Ferrazza, E. Tonelli and W. Oswald. 2015. Manufacturing 100-μm-thick silicon solar cells with efficiencies greater than 20% in a pilot production line. Physica Status Solidi (A): Applications and Materials Science 212(1):13-24. DOI: 10.1002/pssa.201431241. (link )

Yu, Z. J., K. C. Fisher, B. M. Wheelwright, R. P. Angel and Z. C. Holman. 2015. PVMirror: A new concept for tandem solar cells and hybrid solar converters. IEEE Journal of Photovoltaics 5(6):1791-1799. DOI: 10.1109/JPHOTOV.2015.2458571. (link )

2014

Deceglie, M. G., H. S. Emmer, Z. C. Holman, A. Descoeudres, S. de Wolf, C. Ballif and H. Atwater. 2014. Scanning laser-beam-induced current measurements of lateral transport near junction defects in silicon heterojunction solar cells. IEEE Journal of Photovoltaics 4(1):154-159. DOI: 10.1109/JPHOTOV.2013.2289353. (link )

Holman, Z. C., M. Filipic, B. Lipovsek, S. de Wolf, F. Smole, M. Topic and C. Ballif. 2014. Parasitic absorption in the rear reflector of a silicon solar cell: Simulation and measurement of the sub-bandgap reflectance for common dielectric/metal reflectors. Solar Energy Materials and Solar Cells 120(Part A):426-430. DOI: 10.1016/j.solmat.2013.06.024. (link )

Seif, J. P., A. Descoeudres, M. Filipic, F. Smole, M. Topic, Z. C. Holman, S. de Wolf and C. Ballif. 2014. Amorphous silicon oxide window layers for high-efficiency silicon heterojunction solar cells. Journal of Applied Physics 115:024502. DOI: 10.1063/1.4861404. (link )

2013

Barraud, L., Z. C. Holman, N. Badel, P. Reiss, A. Descoeudres, S. de Wolf and C. Ballif. 2013. Hydrogen-doped indium oxide/indium tin oxide bilayers for high-efficiency silicon heterojunction solar cells. Solar Energy Materials and Solar Cells 115(August):151-156. DOI: 10.1016/j.solmat.2013.03.024. (link )

Descoeudres, A., Z. C. Holman, L. Barraud, S. Morel, S. de Wolf and C. Ballif. 2013. >21% efficient silicon heterojunction solar cells on n- and p-type wafers compared. IEEE Journal of Photovoltaics 3(1):83-89. DOI: 10.1109/JPHOTOV.2012.2209407. (link )

Filipic, M., Z. C. Holman, F. Smole, S. de Wolf, C. Ballif and M. Topic. 2013. Analysis of lateral transport through the inversion layer in amorphous silicon/crystalline silicon heterojunction solar cells. Journal of Applied Physics 114:074504. DOI: 10.1063/1.4818709. (link )

Holman, Z. C., S. de Wolf and C. Ballif. 2013. Improving metal reflectors by suppressing surface plasmon polaritons: A priori calculation of the internal reflectance of a solar cell. Light: Science & Applications 2:e106. DOI: 10.1038/lsa.2013.62. (link )

Holman, Z. C., A. Descoeudres, S. de Wolf and C. Ballif. 2013. Record infrared internal quantum efficiency in silicon heterojunction solar cells with dielectric/metal rear reflectors. IEEE Journal of Photovoltaics 3(4):1243-1249. DOI: 10.1109/JPHOTOV.2013.2276484. (link )

Holman, Z. C., M. Filipic, A. Descoeudres, S. de Wolf, F. Smole, M. Topic and C. Ballif. 2013. Infrared light management in high-efficiency silicon heterojunction and rear-passivated solar cells. Journal of Applied Physics 113:013107. DOI: 10.1063/1.4772975. (link )

2012

Anthony, R. J., K. Cheng, Z. C. Holman, R. J. Holmes and U. R. Kortshagen. 2012. An all-gas-phase approach for the fabrication of silicon nanocrystal light-emitting devices. Nano Letters 12(6):2822-2825. DOI: 10.1021/nl300164z. (link )

de Wolf, S., A. Descoeudres, Z. C. Holman and C. Ballif. 2012. High-efficiency silicon heterojunction solar cells: A review. Green 2(1):7-24. DOI: 10.1515/green-2011-0018. (link )

Demaurex, B., S. de Wolf, A. Descoeudres, Z. C. Holman and C. Ballif. 2012. Damage at hydrogenated amorphous/crystalline silicon interfaces by indium tin oxide overlayer sputtering. Applied Physics Letters 101:171604. DOI: 10.1063/1.4764529. (link )

Holman, Z. C., A. Descoeudres, L. Barraud, F. Zicarelli Fernandez, J. P. Seif, S. de Wolf and C. Ballif. 2012. Current losses at the front of silicon heterojunction solar cells. IEEE Journal of Photovoltaics 2(1):7-15. DOI: 10.1109/JPHOTOV.2011.2174967. (link )

Holman, Z. C. and U. R. Kortshagen. 2012. Absolute absorption cross sections of ligand-free colloidal germanium nanocrystals. Applied Physics Letters 100:133108. DOI: 10.1063/1.3698091. (link )

2011

Descoeudres, A., L. Barraud, S. de Wolf, B. Strahm, D. Lachenal, C. Guerin, Z. C. Holman, F. Zicarelli, B. Demaurex, J. Seif, J. Holovsky and C. Ballif. 2011. Improved amorphous/crystalline silicon interface passivation by hydrogen plasma treatment. Applied Physics Letters 99:123506. DOI: 10.1063/1.3641899. (link )

Holman, Z. C. and U. R. Kortshagen. 2011. Nanocrystal inks without ligands: Stable colloids of bare germanium nanocrystals. Nano Letters 11(5):2133-2136. DOI: 10.1021/nl200774y. (link )

Holman, Z. C. and U. R. Kortshagen. 2011. Plasma production of nanodevice-grade semiconductor nanocrystals. Journal of Physics D: Applied Physics 44(17):174009. DOI: 10.1088/0022-3727/44/17/174009. (link )

Holman, Z. C. and U. R. Kortshagen. 2011. Quantum confinement in germanium nanocrystal thin films. Rapid Research Letters 5(3):110-112. DOI: 10.1002/pssr.201105031. (link )

2010

Holman, Z. C. and U. R. Kortshagen. 2010. A flexible method for depositing dense nanocrystal thin films: Impaction of germanium nanocrystals. Nanotechnology 21(33):335302. DOI: 10.1088/0957-4484/21/33/335302. (link )

Holman, Z. C., C. Liu and U. R. Kortshagen. 2010. Germanium and silicon nanocrystal thin-film field-effect transistors from solution. Nano Letters 10(7):2661-2666. DOI: 10.1021/nl101413d. (link )

Liu, C., Z. C. Holman and U. R. Kortshagen. 2010. Optimization of Si NC/P3HT hybrid solar cells. Advanced Functional Materials 20(13):2157-2164. DOI: 10.1002/adfm.200902471. (link )

2009

Holman, Z. C. and U. R. Kortshagen. 2009. Solution-processed germanium nanocrystal thin films as materials for low-cost optical and electronic devices. Langmuir 25(19):1183-11889. DOI: 10.1021/la9015228. (link )

Liu, C., Z. C. Holman and U. R. Kortshagen. 2009. Hybrid solar cells from P3HT and silicon nanocrystals. Nano Letters 9(1):449-452. DOI: 10.1021/nl8034338. (link )

2008

Kortshagen, U. R., R. J. Anthony, R. Gresback, Z. Holman, R. Ligman, C. Liu, L. Mangolini and S. A. Campbell. 2008. Plasma synthesis of group IV quantum dots for luminescence and photovoltaic applications. Pure Applied Chemistry 80(9):1901-1908. DOI: 10.1351/pac200880091901. (link )

2007

Gresback, R., Z. Holman and U. Kortshagen. 2007. Nonthermal plasma synthesis of size-controlled, monodisperse, freestanding germanium nanocrystals. Applied Physics Letters 91:093119. DOI: 10.1063/1.2778356. (link )

2005

LaLonde, A. D., M. G. Norton, D. N. McIlroy, D. Zhang, R. Padmanabhan, A. Alkhateeb, H. Han, N. Lane and Z. Holman. 2005. Metal coatings on SiC nanowires by plasma-enhanced chemical vapor deposition. Journal of Materials Research 20(3):549-553. DOI: 10.1557/JMR.2005.0074. (link )

Book Chapters

In Press

Holman, Z. C. and M. Boccard. Light management in silicon solar cells. In: Freundlich, A., A. Reinders, P. Verlinden and W. Van Stark eds., Photovoltaic Solar Energy: From Fundamentals to Applications. John Wiley & Sons. ISBN: 9781118927465.

2014

Ballif, C., A. Descoeudres, Z. C. Holman and S. de Wolf. 2014. Amorphous silicon/crystalline silicon heterjunction solar cells. In: Willeke, G. and E. Weber eds., Advances in Photovoltaics: Part 3. Elsevier. ISBN: 978-0-12-388417-6.