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SUMMARY:Origami-inspired and multi-scale structures for solar energy conve
 rsion
DTSTART:20141013T131500
DTEND:20141013T141500
DTSTAMP:20260407T042015Z
UID:cdb17b05ab41249ae3368ce4af8efa8216668ec0c7819eaf8acf315d
CATEGORIES:Conferences - Seminars
DESCRIPTION:Max Shtein\, Materials Science and Engineering\, University of
  Michigan\nConventional electronic devices are usually flat and rigid\, in
  large part because they are made from crystalline semiconductors using we
 ll-established\, wafer-based processing methods. Many new applications and
  materials\, however\, compel us to think about non-planar device structur
 es and new processes for realizing them.\nIn this talk\, Prof. Shtein will
  discuss how the art of origami (paper folding) and kirigami (paper cuttin
 g) can help in developing efficient solar energy harvesting devices (photo
 voltaic cells and concentrators)\, with performance matching or surpassing
  that of conventional devices\, while circumventing some of their classica
 l limitations. Examples of this will include organic solar cells fabricate
 d on fibers that can be configured as novel reflective tandems\, as well a
 s solar cells monolithically integrated with solar tracking mechanisms. De
 vice performance characteristics will be closely related to device structu
 re\, with consideration given to suitable device processing approaches. To
 gether with the audience\, Prof. Shtein will consider the use of these gen
 eral approaches in other applications.\nReferences and links\n1. W. Shockl
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 -processed organic tandem solar cells\,” Adv. Funct. Mater. 16(14)\, 189
 7–1903 (2006).\n7. P. Peumans\, A. Yakimov\, and S. R. Forrest\, “Smal
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 . Appl. Phys. 93(7)\, 3693–3723 (2003).\n8. L. A. A. Pettersson\, L. S. 
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 Jia\, and M. Kondo\, “Development of flexible fiber-type poly-Si solar c
 ell\,” Conference Record of the 2006 IEEE 4th World Conference on Photov
 oltaic Energy Conversion\, Vols. 1–2 1380–1383 (2006).\n10. B. O'Conno
 r\, K. P. Pipe\, and M. Shtein\, “Fiber based organic photovoltaic devic
 es\,” Appl. Phys. Lett. 92(19)\, 193306 (2008).\n11. M. R. Lee\, R. D. E
 ckert\, K. Forberich\, G. Dennler\, C. J. Brabec\, and R. A. Gaudiana\, 
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  $15.00 USD Received 6 May 2010\; revised 17 Jun 2010\; accepted 18 Aug 20
 10\; published 7 Sep 2010 (C) 2010 OSA 13 September 2010 / Vol. 18\, No. 1
 03 / OPTICS EXPRESS A432\n13. C. Kim\, and J. Kim\, “Organic photovoltai
 c cell in lateral-tandem configuration employing continuously-tuned microc
 avity sub-cells\,” Opt. Express 16(24)\, 19987–19994 (2008).\n14. B. O
 'Connor\, K. H. An\, K. P. Pipe\, Y. Zhao\, and M. Shtein\, “Enhanced op
 tical field intensity distribution in organic photovoltaic devices using e
 xternal coatings\,” Appl. Phys. Lett. 89(23)\, 233502 (2006).\n15. M. Ag
 rawal\, and P. Peumans\, “Broadband optical absorption enhancement throu
 gh coherent light trapping in thin-film photovoltaic cells\,” Opt. Expre
 ss 16(8)\, 5385–5396 (2008).\n16. H. Hoppe\, and N. S. Sariciftci\, “O
 rganic solar cells: An overview\,” J. Mater. Res. 19(7)\, 1924–1945 (2
 004).\n17. M. M. Wienk\, M. P. Struijk\, and R. A. J. Janssen\, “Low ban
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 6)\, 488–491 (2006).\n18. F. Yang\, R. R. Lunt\, and S. R. Forrest\, “
 Simultaneous heterojunction organic solar cells with broad spectral sensit
 ivity\,” Appl. Phys. Lett. 92(5)\, 053310 (2008).\n19. E. Palik\, Handbo
 ok of Optical Constants of Solids (Academic Press\; 1st edition\, 1985).\n
 20. B. O'Connor\, C. Haughn\, K. H. An\, K. P. Pipe\, and M. Shtein\, “T
 ransparent and conductive electrodes based on unpatterned\, thin metal fil
 ms\,” Appl. Phys. Lett. 93(22)\, 223304 (2008).\n21. G. Dennler\, K. For
 berich\, M. C. Scharber\, C. J. Brabec\, I. Tomis\, K. Hingerl\, and T. Fr
 omherz\, “Angle dependence of external and internal quantum efficiencies
  in bulk-heterojunction organic solar cells\,” J. Appl. Phys. 102(5)\, 0
 54516 (2007).\n22. A. Meyer\, and H. Ade\, “The effect of angle of incid
 ence on the optical field distribution within thin film organic solar cell
 s\,” J. Appl. Phys. 106(11)\, 113101 (2009).\n23. I. G. Hill\, A. Kahn\,
  Z. G. Soos\, and R. A. Pascal\, “Chem. “Charge-separation energy in f
 ilms of pi-conjugated organic molecules\,” Chem. Phys. Lett. 327(3-4)\, 
 181–188 (2000).\n24. M. C. Scharber\, D. Mühlbacher\, M. Koppe\, P. De
 nk\, C. Waldauf\, A. J. Heeger\, and C. J. Brabec\, “Design rules for do
 nors in bulk-heterojunction solar cells – Towards 10% energy-conversion 
 efficiency\,” Adv. Mater. 18(6)\, 789–794 (2006).\n25. The MatchWorks\
 , Inc.\, Matlab R2009a (2009).\n26. F. J. López-Hernández\, R. Pérez-Ji
 ménez\, and A.  \, “Ray-tracing algori
 thms for fast calculation of the channel impulse response on diffuse IR wi
 reless indoor channels\,” Opt. Eng. 39\, 2775–2780 (2000).\n27. H. A. 
 Macleod\, Thin-film Optical Filters\, 3rd Ed. (Taylor & Francis\, 2001).\n
 28. H. Hoppe\, N. Arnold\, N. S. Sariciftci\, and D. Meissner\, “Modelin
 g the optical absorption within conjugated polymer/fullerene-based bulk-he
 terojunction organic solar cells\,” Sol. Energy Mater. Sol. Cells 80(1)\
 , 105–113 (2003).\n29. A. Premoli\, and M. L. Rastello\, “Minimax refi
 ning of wide-band antireflection coatings for wide angular incidence\,” 
 Appl. Opt. 33(10)\, 2018–2024 (1994).\n30. D. P. Partlow\, and T. W. O
 ’Keeffe\, “Thirty-seven layer optical filter from polymerized solgel s
 olutions\,” Appl.\nOpt. 29(10)\, 1526–1529 (1990).\n31. K. M. Ho\, C. 
 T. Chan\, C. M. Soukoulis\, R. Biswas\, and M. Sigalas\, “Photonic band 
 gaps in three dimensions: New layer-by-layer periodic structures\,” Soli
 d State Commun. 89(5)\, 413–416 (1994).\n32. R. R. King\, D. C. Law\, K.
  M. Edmondson\, C. M. Fetzer\, G. S. Kinsey\, H. Yoon\, R. A. Sherif\, and
  N. H. Karam\, “40% efficient metamorphic GaInP/GaInAs/Ge multijunction 
 solar cells\,” Appl. Phys. Lett. 90(18)\, 183516 (2007).\n33. G. D. Wei\
 , S. Y. Wang\, K. Renshaw\, M. E. Thompson\, and S. R. Forrest\, “Soluti
 on-processed squaraine bulk heterojunction photovoltaic cells\,” ACS Nan
 o 4(4)\, 1927–1934 (2010).\nBio: Prof. Shtein earned his Baccalaureate a
 t UC Berkeley (1998) and Ph.D. at Princeton University (2004) in Chemical 
 Engineering. He joined the University of Michigan in 2004\, where he now s
 erves as Associate Professor in Materials Science and Engineering\, Chemic
 al Engineering\, Applied Physics\, Macromolecular Science and Engineering\
 , Entrepreneurship\, and Art & Design. His work has been recognized throug
 h several awards\, including the MSE Department Achievement Award\, the Pr
 esidential Early Career Award for Scientists and Engineers (PECASE) from t
 he Air Force Office of Scientific Research\, College of Engineering-wide V
 ulcans Prize for Excellence in Education\, the Holt Award for Excellence i
 n Teaching\, the Newport Award for Excellence and Leadership in Photonics 
 and Optoelectronics\, and the Materials Research Society (MRS) graduate st
 udent Gold Medal Award. He recently co-founded Arborlight\, LLC (www.arbor
 light.com – a lighting technology company)\, and co-authored the book 
 “Scalable Innovation:  A Guide for Inventors\, Entrepreneurs\, and IP P
 rofessionals.” (Taylor & Francis\, ISBN-13: 978-1466590977\, ISBN-10: 14
 66590971)
LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201
STATUS:CONFIRMED
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