chalcogenide-based absorber layers for high-efficiency solar cells. ... (world
record) for the solution-processed kesterite material, Cu2ZnSn(S,Se)4, which.
David B. Mitzi IBM T.J. Watson Research Center P.O. Box 218 Yorktown Heights, NY 10598
Phone: (914)945-4176 (Office) (845)628-0209 (Home) Email:
[email protected]
EDUCATION: STANFORD UNIVERSITY, Ph.D. in Applied Physics, September 1990. Thesis: “Growth and Properties of Oxygen and Ion Doped Bi2Sr2CaCu2O8+ Single Crystals” Awards and Honors: AT&T Bell Laboratories Ph.D. Scholarship (1986-1990).
PRINCETON UNIVERSITY, B.S.E. in Elect. Engineering / Engineering Physics, June 1985. Senior Thesis: “The Frequency Dependence of the Integral Quantized Hall Effect” Awards and Honors: Kusaka Memorial Prize in Physics (1984).
RESEARCH AND MANAGEMENT EXPERIENCE: IBM T. J. WATSON RESEARCH CENTER (Manager, Photovoltaic Sci. and Tech.) June 2009 - present Initiated and manage a multi-company program to develop a low-cost high-throughput approach to deposit thin-film chalcogenide-based absorber layers for high-efficiency solar cells. The program has led to the demonstration of solution-deposited CIGS (copper-indium-gallium selenide) solar cells with certified power conversion efficiency above 15% [e.g., Adv. Mater. 20, 3657 (2008); Prog. Photovolt. 21, 82 (2013)]. The promising initial results have led to a joint development project with TOK Corporation to scale up the process. In addition, we have demonstrated above 11% power conversion efficiency (world record) for the solution-processed kesterite material, Cu2ZnSn(S,Se)4, which has the indium in CIGS replaced with more abundant and less expensive zinc and tin [e.g., Adv. Mater. 22, E156 (2010); Adv. Energy Mater., DOI: 10.1002/aenm.201200348 (2012)]. These results have led to a further expansion of our joint development project to include DelSolar and Solar Frontier, and have led to awards, such as the 2010 IDTechEx Printed Electronics Materials Award.
IBM T. J. WATSON RESEARCH CENTER (Research Staff Member)
Oct. 1990 – May 2009
Examination of structure-property relationship in organic-inorganic hybrids and development of other solutionprocessed high-mobility inorganic semiconductors for thin-film devices (e.g., solar cells, TFTs, LEDs). Studies include examination of solid-state and solution-based synthetic techniques for targeted complex materials, single crystal growth and thin-film deposition processes (vapor phase, melt- and solution-based), crystal structure refinement, measurement of optical, magnetic and electrical properties of bulk and thin-film samples, electronic device fabrication and testing. Selected accomplishments include discovering a semiconductor-metal transition in a family of organic-inorganic hybrids, which offer solution-processability and Hall mobility > 1 cm2/V-s [Nature 369, 467 (1994); Science 267, 1473 (1995)], demonstration of an FET, based on the organic-inorganic semiconductors, yielding the highest field-effect mobility (at that time) for devices processed at near-ambient temperature [Science 286, 945 (1999)], and development of a hydrazinium-based precursor route to spin coating chalcogenide semiconductors, yielding films with n-and p-type field-effect mobilities > 10 cm2/V-sec, approximately an order of magnitude higher than previous results for spincoated semiconductors [Nature 428, 299 (2004); Adv. Mater. 17, 1285 (2005)].
STANFORD UNIVERSITY, Dept. of Applied Physics (Graduate Student)
Sept. 1985 – Sept. 1990
Experimental studies of the relationship between solid state chemistry and physical properties in the high temperature cuprate superconductors. Performed studies in ceramics preparation, single crystal growth, x-ray diffraction, SQUID magnetometry, thermal analysis, electron microscopy, and electrical transport. Active participation in neutron diffraction and SR experiments and also involved with photoemission, specific heat, STM, and tunneling experiments. A gradient growth technique was developed [Phys. Rev. B 41, 6564 (1990)] to grow high quality single
crystals in the Bi2Sr2CaCu2O8+ system. Since 1988, 13 Physical Review Letters, 24 Physical Review B, 5 Applied Physics Letters, 1 Science, and 21 other articles have been published based on studies performed on these crystals, providing a unique insight into the mechanism and physics of high temperature superconductivity in one set of carefully-grown crystals. The top 6 articles published from this list have been cited over 1000 times.
PEER REVIEW PANELS, COMMITTEES, OUTREACH: 1.
DOE Basic Energy Sciences Research Program review panel in the area of “Superconductivity and Ceramics,” Bethesda, MD (Sept. 1-3, 1992).
2.
Charter member of the IBM Materials Research Council. Served as member of the “Vision” Subcommittee and co-drafted the mission statement for the new organization. IBM T. J. Watson Research Center, Yorktown Heights, NY (1999).
4.
Elected Vice-Chair of the IBM Materials Research Council (2000); Served as Chair the following year (2001).
5.
Third NSF Workshop on Future Directions of Solid State Chemistry, Northwestern University, Evanston, IL (May 18-20, 2006).
6.
DOE Basic Energy Sciences Research Program review panel in the area of “Basic Research for Solar Energy Utilization,” Bethesda, MD (Feb. 4-7, 2007).
7.
NIST Advanced Photovoltaics Workshop (by invitation, targeted at indentifying key technical challenges in the development of advanced solar photovoltaics technologies), Denver, CO (May 11-12, 2010).
8.
Member of the Editorial Board for Advanced Energy Materials (Wiley) (March 2011 - present)
9.
Science Advisory Board, Center for Sustainable Materials Chemistry, University of Oregon and Oregon State University (2012-present).
10.
Review for a variety of funding agencies and journals including the NSF, Nature, Nature Materials, Advanced Materials, J. Am. Chem. Soc., Chemistry of Materials, Inorganic Chemistry, J. Solid State Chemistry, Phys. Rev. Lett., Thin Solid Films, Progress in Photovoltaics, Solar Energy Mater. Solar Cells, Advanced Energy Materials.
CONFERENCE / WORKSHOPS ORGANIZATION: 1.
Chairman of Session I16 (HTSC: Bismuth) at the American Physical Society March Meeting Indianapolis, IN (March 18, 1992).
2.
Co-chair / Co-organizer for Symposium QQ (Solid-State Chemistry of Inorganic Materials IV) Materials Research Society (MRS) Fall Meeting, Boston, MA (November 28-30, 2006).
3.
Principle organizer for Symposium F (Low-Cost Solution-Based Deposition of Inorganic Films for Electronic/Photonic Devices) Materials Research Society (MRS) Fall Meeting, Boston, MA (December 1-4, 2008).
4.
Co-chair / Co-organizer for Symposium C (Solution Processing of Inorganic and Hybrid Films for Electronics and Photonics) Materials Research Society (MRS) Spring Meeting, San Francisco, CA (April 5-9, 2010).
5.
Co-chair / Co-organizer for Symposium S (Solution Processing of Inorganic and Hybrid Films for Electronics and Photonics) Materials Research Society (MRS) Fall Meeting, Boston, MA (November 28-December 2, 2011).
6.
Co-organizer/host for Sunshot CZTS Meeting (small DOE workshop to discuss issues with CZTS) IBM T. J. Watson Research Center, Yorktown Heights, NY (January 22-23, 2013).
7.
Co-organizer for 2014 European Materials Research Society Spring Meeting, Symposium on Thin-Film Chalcogenide Photovoltaic Materials (May 2014).
BOOKS: 1.
“Solution Processing of Inorganic Materials” Edited by David B. Mitzi John Wiley & Sons, 2009 (497 pages)
SELECTED OTHER PUBLICATIONS (168 total): 1. Growth and Properties of Oxygen and Ion Doped Bi2Sr2CaCu2O8+ Single Crystals D. B. Mitzi, L. W. Lombardo, A. Kapitulnik, S. S. Laderman and R. D. Jacowitz Phys. Rev. B 41, 6564 (1990). 2. Transport, Optical and Magnetic Properties of the Conducting Halide Perovskite CH3NH3SnI3 D.B. Mitzi, C.A. Feild, Z. Schlesinger, and R.B. Laibowitz J. Solid State Chem. 114, 159 (1995). 3. Conducting Tin Halides with a Layered Organic-Based Perovskite Structure D.B. Mitzi, C.A. Feild, W.T.A. Harrison, and A.M. Guloy Nature 369, 467 (1994). 4. Conducting Layered Organic-Inorganic Halides Containing -Oriented Perovskite Sheets D.B. Mitzi, S. Wang, C.A. Feild, C.A. Chess, and A.M. Guloy Science 267, 1473 (1995). 5. Synthesis and Characterization of [NH2C(I) = NH2]3MI5 (M=Sn, Pb): Stereochemical Activity in Divalent Tin and Lead Halides Containing Single Perovskite Sheets Shumin Wang, David B. Mitzi, Chris A. Feild, and Arnold Guloy J. Am. Chem. Soc. 117, 5297 (1995). 6.
Synthesis, Structure and Properties of Organic-Inorganic Perovskites and Related Systems David B. Mitzi Progress in Inorganic Chemistry (invited chapter) 48, 1 (1999).
7. Templating and Structural Engineering in Organic-Inorganic Perovskites (invited Perspective article)
David B. Mitzi J. Chem. Society, Dalton Transactions, 1 (2001). 8. Organic-Inorganic Electronics David B. Mitzi, Konstantinos Chondroudis, Cherie Kagan IBM J. Res. Develop. 45, 29 (2001). 9. High-Mobility Ultrathin Semiconducting Films Prepared by Spin Coating David B. Mitzi, Laura L. Kosbar, Conal E. Murray, Matthew Copel, Ali Afzali Nature 428, 299-303 (2004). 10. Solution-Processed Inorganic Semiconductors David B. Mitzi invited Feature Article, J. Mater. Chem. 14, 2355-2365 (2004). 11. A High-Efficiency Solution-Deposited Thin-Film Photovoltaic Device David B. Mitzi, Min Yuan, Wei Liu, Andrew Kellock, S. Jay Chey, Vaughn Deline, Alex G. Schrott Adv. Mater. 20 3657-3662 (2008). 12.
Solvent Properties of Hydrazine in the Preparation of Metal Chalcogenide Bulk Materials and Films Min Yuan, David B. Mitzi Dalton Transactions, invited Perspective article, 6078-6088 (2009).
13.
High-Efficiency Solar Cell with Earth Abundant Liquid-Processed Absorber Teodor K. Todorov, Kathleen B. Reuter, David B. Mitzi Adv. Mater. 22, E156-E159 (2010).
14.
The Path Towards a High-Performance Solution-Processed Kesterite Solar Cell (invited review) David B. Mitzi, Oki Gunawan, Teodor K. Todorov, Kejia Wang, Supratik Guha Sol. Energy Mater. Sol. Cells 95, 1421-1436 (2011).
15.
Device Characteristics of a 10.1% Hydrazine-Processed Cu2ZnSn(Se,S)4 Solar Cell D. Aaron R. Barkhouse, Oki Gunawan, Tayfun Gokmen, Teodor K. Todorov, David B. Mitzi Prog. Photovolt.: Res. and Appl. 20, 6-11 (2012).
16.
Beyond 11% Efficiency: Characterization of State-of-the-Art Cu2ZnSn(S,Se)4 Solar Cells Teodor K. Todorov, Jiang Tang, Santanu Bag, Oki Gunawan, Tayfun Gokmen, Yu Zhu, David B. Mitzi Adv. Energy Mater., in press (2012).
17.
Materials interface engineering for solution-processed photovoltaics Michael Graetzel, René A. J. Janssen, David B. Mitzi, Edward H. Sargent Nature 488, 304-312 (2012).
18.
Solution-Processed Cu(In,Ga)(S,Se)2 Absorber Yielding 15.2% Efficient Solar Cell Teodor K. Todorov, Oki Gunawan, Tayfun Gokmen, David B. Mitzi Prog. Photovoltaics: Res. and Appl., 21, 82-87 (2013).
