National Physical Laboratory

Organic Electronics Emerging Electronics

Emerging electronics makes use of novel materials and novel manufacturing processes to create electronic devices that can be easily integrated into a wide range of products: from large area flexible electronics to wearables and implantable electronic devices. Understanding the impact of processing on material properties and device performance/reliability is critical.

Publications


2013-2015

Current landscape of standardisation efforts in organic and printed electronics 2015 - a VAMAS review
Castro, F A
NPL Report MAT 73x, April 2015

Photochemical transformations in fullerene and molybdenum oxide affect the stability of bilayer organic solar cells
H. Zhang, A. Borgschulte, F.A. Castro, R. Crockett, O. Deniz, J. Heier, S. Jenatsch, A. Zoladek-Lemanczyk, R. Hany
Adv. Energ. Mater., (2014) doi: 10.1002/aenm.201400734

Worldwide outdoor round robin study of organic photovoltaic devices and modules
M.V. Madsen et al
Sol Energy Mater Sol Cells, 130 (2014) 281-290

Interlaboratory indoor ageing of roll-to-roll and spin coated organic photovoltaic devices: Testing the ISOS tests
S.A. Gevorgyan et al
J. Polymer Degradation and Stability, 109, (2014) 162-170

Towards reliable charge-mobility benchmark measurements for organic semiconductors
J. C. Blakesley, F. A. Castro, W. Kylberg, G. F.A. Dibb, C. Arantes, R. Valaski, M. Cremona, J. S. Kim, J.-S. Kim
Organic Electronics, 15, (2014) 1263-1272

Round Robin Performance Testing of Organic Photovoltaic Devices
S. A. Gevorgyan et al
Renewable Energy, 63, (2014) 376-387

Fundamental aspects of Arn+ SIMS profiling of common organic semiconductors
C. Fleischmann, T. Conard, R. Havelund, A. Franquet, C. Poleunis, E. Voroshazi, A. Delcorte and W. Vandervorst
Surface and Interface Analysis, 2014, DOI: 10.1002/sia.5621

Spatially resolved photocurrent mapping of efficient organic solar cells fabricated on a woven mesh electrode
W. Kylberg, F.A. Castro, P. Chabrecek, T. Geiger, J. Heier, P.G. Nicholson, E. Theocharous, U. Sonderegger, R. Hany
Progress In Photovoltaics, 21 (2013) 652-657

Gamma-Ray Dosimetric Properties of Conjugated Polymers in Solution
A. Batagin-Neto, E.S. Bronze-Uhle, M.V.G. Vismara, A.P. Assis, F.A. Castro, T. Geiger, F.C. Lavarda, C.F.O. Graeff,
Current Physical Chemistry, 2013, 3, 431-440


2010-2012

2D photocurrent and transmission mapping of aqueous dye sensitized solar cells
T.A.G. Risbridger, F.A. Castro, P.J. Cameron
Journal of Physical Chemistry C, 116(42) (2012) 22253-22260

Molecular relaxation temperature effects on emission efficiency of organic light-emitting diodes
S.F.C. Silva, M. Foschini, H.S. Silva, J.R. Tozoni, F.A. Castro, R. A. Silva, A. Marletta
Organic Electronics, 13 (2012) 2935-2939

Screening of Photoactive Dyes on TiO2 Surfaces Using Scanning Electrochemical Microscopy
W. Kylberg, A. J. Wain, F.A. Castro
Journal of Physical Chemistry C, 116 (2012) 17384-17392

Oligothiophene dendron-decorated squaraine dyes: Synthesis, thin film formation, and performance in organic solar cells
W. Kylberg, Y. Zhang, A. Aebersold, F.A. Castro, T. Geiger, J. Heier, Simon Kuster, C.-Q. Ma, P. Bäuerle, F. Nüesch,J.-N. Tisserant, R. Hany
Organic Electronics, 13, 1204-1212 (2012)

Challenges found when patterning semiconducting polymers with electric fields for organic solar cell applications
F. A. Castro, F. Nüesch, C. Walder, R. Hany
Journal of Nanomaterials, (2012) in press

On the origin of exciton formation in dye doped Alq3 OLEDs
J. A. Gómez, F. A. Castro, F. Nüesch, L. Zuppiroli and C. F. O. Graeff
Applied Physics A: Materials Science & Processing, (2012) DOI: 10.1007/s00339-012-6957-8

Spatially resolved photocurrent mapping of efficient organic solar cells fabricated on a woven mesh electrode
W. Kylberg, F. A. Castro, P. Chabrecek, T. Geiger, J. Heier, P. G. Nicholson, F. Nuesch, E. Theocharous, U. Sonderegger, R. Hany
Progress in Photovoltaics, DOI: 10.1002/pip.1242

Surface and subsurface morphology of operating nanowire:fullerene solar cells revealed by photoconductive AFM
Wing C. Tsoi, Patrick G. Nicholson, Jong Soo Kim, Debdulal Roy, Tim L. Burnett, Craig E. Murphy, Jenny Nelson, Donal D.C. Bradley, Ji-Seon Kim, Fernando A. Castro*
Energy & Environmental Science, 4, 3646-3651 (2011)

The nature of in-plane skeleton Raman modes of P3HT and their correlation to the degree of molecular order in P3HT:PCBM blend thin films
W.C. Tsoi, D.T. James, J.S. Kim, P.G. Nicholson, C.E. Murphy*, D.D.C. Bradley, J.Nelson, J-S. Kim*
Journal of the American Chemical Society, 133, 9834, (2011)

Effect of Crystallization on the Electronic Energy Levels and Thin Film Morphology of P3HT:PCBM Blends
Wing C. Tsoi, Steve J. Spencer, Li Yang, Amy M. Ballantyne, Patrick G. Nicholson, Alan Turnbull, Alex G. Shard, Craig E. Murphy, Donal D. C. Bradley, Jenny Nelson, and Ji-Seon Kim
Macromolecules 2011, 44, 2944-2952

Woven Electrodes for Flexible Organic Photovoltaic Cells
W. Kylberg, F.A. Castro, P. Chabrecek, U. Sonderegger, B.T.T. Chu, F. Nuesch, R. Hany
Advanced Materials, 23 (2011) 1015-1019

A metrology perspective on the dark injection transient current method for charge mobility determination in organic semiconductors
T.J. Esward, P. Brewer, H. Jones, S. Knox, C.E. Murphy, J. Williams, L. Wright
J. Appl. Phys., 109, 093707, (2011)

High-mobility solution-processed copper phthalocyanine-based organic field-effect transistors
N.B. Chaure, A.N. Cammidge, I. Chambrier, M.J. Cook, M.G. Cain, C.E. Murphy, C. Pal, A.K. Ray*
Science and Technology of Advanced Materials, 12, 025001, (2011)

Organic photovoltaics: principles and techniques for nanometre scale characterization
P.G. Nicholson, F.A. Castro, Nanotechnology 21 (2010) 492001 (Topical Review - 26 pages)

Transport and Interfacial Transfer of Electrons in Dye-Sensitized Solar Cells Utilizing a Co(dbbip)2 Redox Shuttle
H. Wang, P.G. Nicholson, L. Peter, S.M. Zakeeruddin, and M. Gratzel
J. Phys. Chem. C, 2010, 114, 14300-14306

Predicting the wettability of patterned ITO surface using ToF-SIMS images
L. Yang, A. G. Shard, J. L. S. Lee and S. Ray
Surf. Interface Anal., 2010, 42, 911-915

Sample Cooling or Rotation Improves C60 Organic Depth Profiles of Multilayered Reference Samples: Results from a VAMAS Interlaboratory Study
P. Sjovall, D. Rading, S. Ray, L. Yang and A. G. Shard
J. Phys. Chem. B, 2010, 114 (2), pp 769-774

Organic Depth Profiling of a Nanostructured Delta Layer Reference Material Using Large Argon Cluster Ions
J. L. S. Lee, S. Ninomiya, J. Matsuo, I. S. Gilmore, M. P. Seah and A. G. Shard
Anal. Chem., 2010, 82 (1), pp 98-105

Correlations for predicting the surface wettability for organic light-emitting diode patterns by x-ray photoelectron spectroscopy analysis
L. Yang*, P. Svarnas, A.G. Shard, J.W. Bradley, M.P. Seah
Journal of Applied Physics, 108, 114901, (2010)

Highly-selective wettability on organic-light-emitting-diodes patterns by sequential low-power plasmas
P. Svarnas*, L. Yang, M. Munz, A.J. Edwards, A.G. Shard, J.W. Bradley
Journal of Applied Physics, 107, 103313, (2010)


Presentations

Invited talk at the European Materials Research Society Fall Meeting (Warsaw, Poland) 2012 - Measurement methods for high-resolution local photocurrent mapping in organic and dye-sensitised solar cells - Fernando A. Castro

Invited talk at the UK-Korea Workshop on Plastic Electronics (Daejeon, Korea) 2012 Advanced metrology for plastic electronics - Fernando A. Castro

Invited talk at INMETRO (Rio de Janeiro, Brazil) 2011 - Organic Electronics at NPL / Mapping photocurrent generation in the nanoscale - Fernando A. Castro

Invited talk at EERA/SOPHIA workshop on testing Organic Photovoltaics (Portici, Italy) 2011 - Solar Cell characterization at NPL - Fernando A. Castro

Celebrating Science (NPL, UK) - Mapping photocurrent generation in the nanoscale: a probe to the 3D morphology of organic solar cells - Fernando A. Castro

IOP Perspectives in Materials and Technologies for Photovoltaics (Manchester, UK) - Surface and subsurface morphology of operating nanowire:fullerene solar cells revealed by photoconductive-AFM - Wing C. Tsoi, Patrick G. Nicholson, Jong Soo Kim, Debdulal Roy, Tim L. Burnett, Craig E. Murphy, Jenny Nelson, Donal D. C. Bradley, Ji-Seon Kim, Fernando A. Castro

SPIE 2011 (San Diego, USA) - Probing the internal nanomorphology in real-working bulk-heterojuntion solar cells, Wing C. Tsoi, Patrick Nicholson, Debdulal Roy, Craig Murphy, Ji-Seon Kim, Fernando A. Castro

Two invited talks at Supergen Excitonic Solar Cell workshop (2011):

  • Surface and subsurface morphology of operating nanowire:fullerene solar cells revealed by photoconductive-AFM, Patrick Nicholson
  • Advanced metrology for excitonic solar cells, Craig Murphy

Invited talk at International Workshop: Processing for Flexible Polymer Electronic Devices - make it by the mile. (Ghent, Belgium) 2011 - Metrology for the manufacturing of organic thin films - Fernando A. Castro

Two talks at the International Congress on Science and Technology of Synthetic Metals ICSM 2010 (Kyoto, Japan),

  • Charge extraction in organic solar cells: how the organic-metal interface can lead to kinks in JV characteristics, F.A. Castro, J. Heier, F. Bin, F. Nüesch and R. Hany
  • Effect of Crystallisation on Electronic Energy levels and Thin Film Morphology of P3HT:PCBM Blends, W. C. Tsoi, S. J. Spencer, C. E. Murphy, D. D. C. Bradley,J. Nelson and J. S. Kim

Invited seminars at KRISS, KAIST, ETRI, Korea University, LG Display (2010)
Metrology for Plastic Electronics, Craig Murphy

Invited seminar and talk at PE conference OSC-09 (London, 2009)
Standards for Organic Electronics, Craig Murphy

Invited talk at IOP Barrier layer meeting (2009),
Measurements of water vapour transmission rate through barrier layers
, Craig Murphy

UK Scanning Probe Microscopy 2009, Electrical properties measurement of organic electronics polymer blends using UHV-SPM, Andrés Muñiz Piniella, Laurie Winkless, Craig Murphy, Alexandre Cuenat

SPIE 2008 Controlling Organic-Organic Interfaces for Efficient Optoelectronic Devices (invited)
Ji-Seon Kim, Ken: Keng-Hoong Yim, Annamaria Petrozza, Jessica Winfield, Richard Friend, Craig Murphy, Jeremy Burroughes


Contact

For more information, please contact Fernando Castro

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