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Image result for icon tel 919-515-5282
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….Aerospace Engineering
….Engineering Building III
….Room 3312
Group webpage

Brendan O’Connor

Associate Professor

NC State University, Department of Mechanical and Aerospace Engineering,
Raleigh, North Carolina, 27695


  • Assistant Professor, NC State University, 2011-present
  • PhD, Mechanical Engineering, University of Michigan, 2009
  • MS, Mechanical Engineering, University of Massachusetts, 2004
  • BS, Mechanical Engineering, Marquette University, 2000

Research interests

Current research topics in Dr. O’Connor’s group includes: 1. Understanding the mechanical behavior of organic electronics for flexible and stretchable devices; 2. Producing low-cost, high efficiency, organic solar cells; 3. Developing high performance semitransparent solar cells and photodetectors; 4. Developing photodetectors with polarized light sensing capabilities; 5. Producing thin film thermoelectric devices with novel device geometries; 6. Understanding fundamental property-structure relationships in organic semiconductors; 7. Developing scalable processing methods for organic electronics. Research in Dr. O’Connor’s group is highly interdisciplinary and includes mechanics of materials, manufacturing, thermodynamics, and semiconductor device physics. Interested students will be exposed to a wide range of fabrication and characterization methods. Interested students are encouraged to contact Dr. O’Connor to learn more about research opportunities in his group.
Dr. O’Connor teaches MAE 589 Direct Energy Conversion, MAE 421 Solar Energy, MAE 412 Design of Thermal Systems, MAE 310 Heat Transfer Fundamentals, and MAE 301 Thermodynamics 1.

Select Publications | Complete List Of Publications

L. Ye, Y. Xiong, S. Li, M. Ghasemi, N. Balar, J. Turner, A. Gadisa, J. Hou, B.T. O’Connor, H. Ade, Precise Manipulation of Multi-length Scale Morphology and Its Influence on Eco-friendly Printed All-Polymer Solar Cells, Adv. Funct. Mater. 27, 1702016 (2017). link

J Kim, A. Gadisa, C. Schaefer, H. Yao, B.R. Gautam, N. Balar, M. Ghasemi, I. Constantinuo, F. So, B.T. O’Connor, K. Gundogdu, J. Hou, H. Ade, Strong polymer molecular weight-dependent material interactions: impact on the formation of the polymer/fullerene bulk heterojunction morphology, J. Mater. Chem. A 5, 13176 (2017). link

H. Yu, C. Chung, N. Shewmon, S. Ho, J.H. Carpenter, R. Larrabee, T. Sun, J.L. Jones, H. Ade, B.T. O’Connor, F. So, Flexible Inorganic Ferroelectric Thin Films for Nonvolatile Memory Devices, Adv. Funct. Mater., 27, 1700461 (2017). link

R. Yang, P. Sen, B.T. O’Connor, MW. Kudenov, Intrinsic coincident full-Stokes polarimeter using stracked organic photovoltaics, Appl. Opt. 56, 1768 (2017). link

B.T. O’Connor, O.M. Awartani, N. Balar, Morphological considerations of organic films for flexible and stretchable devices,  MRS Bulletin 42, 2 (2017). link

T. Sun, J.I. Scott, M. Wang, R.J. Kline, G. Bazan, B.T. O’Connor, Plastic Deformation of Polymer Blends as a Means to Achieve Stretchable Organic Transistors, Adv. Electro. Mater. 3, 1 (2017).  link

L. Ye, Y. Xiong, H. Yao, A.G. Dinku, H. Zhang, S. Li, M. Ghasemi, N. Balar, A. Hunt, B.T. O’Connor, J. Hou, H. Ade, Blade-Coating in Air from Food Additive Solvent Yield High Performance Organic Photovoltaic Cells, Chem. Mater. 28, 7451 (2016). link

J.I. Scott, X. Xue, M. Wang, R.J. Kline, B.C. Hoffman, D. Dougherty, C. Zhou, G. Bazan, B.T. O’Connor, Significantly Increasing the Ductility of High Performance Polymer Semiconductors Though Polymer Blending, ACS Appl. Mater. & Interfaces 8, 1403 (2016). link

M. Antonik, B.T. O’Connor, S. Ferguson, Performance and Design Comparison of a Bulk Thermoelectric Cooler with a Hybrid Architecture, J. Thermal Sci. Eng. Appl. 8, 021022 (2016). link

B. Zhao, O. Awartani, B. O’Connor, M.A. Zikry, Microstructural Behavior and Failure Mechanisms of Organic Semicrystalline Thin Film Blends, J. Polymer Sci., Part B: Polymer Phys. 54, 896 (2016). link

O.M. Awartani, B. Zhao, T. Curie, R.J. Kline, M.A. Zikry, B.T. O’Connor, Anisotropic elastic modulus of oriented regioregular poly(3-hexylthiophene) films, Macromolecules 49, 327 (2016). link

X. Xue, G. Chandler, X. Zhang, R.J. Kline, Z. Fie, M. Heeney, P.J. Diemer, O.D. Jurchescu, B.T. O’Connor, Oriented Liquid crystalline polymer Semiconductor films with large ordered domains, ACS Appl. Mater. and Interfaces, 7, 26726 (2015).link

T. Sun, J.L. Peavey, M.D. Shelby, S. Ferguson, B.T. O’Connor, Heat shrink formation of a corrugated thin film thermoelectric generator, Energy Conversion and Management 103, 674 (2015). link

B. Kitchen, O. Awartani, R.J. Kline, T. McAfee, H. Ade, B.T. O’Connor, Tuning open-circuit voltage in organic solar cells with molecular orientation, ACS Appl. Mater. & Interfaces, 7, 13208 (2015). link

O. Awartani, M.W. Kudenov, R.J. Kline, B.T. O’Connor, In-plane alignment in organic solar cells to probe the morphological dependence of charge recombination, Adv. Funct. Mater. 25, 1296 (2015). link

B.T. O’Connor, O.G. Reid, X. Zhang, R.J. Kline, L.J. Richter, D.J. Gundlach, D.M. DeLongchamp, M.F. Toney, N. Kopidakis, G. Rumbles, Morphological origin of charge transport anisotropy in aligned polythiophene thin films, Adv. Funct. Mater. 24, 3422 (2014). link

D. Gargi, R.J. Kline, D.M. DeLongchamp, D.A. Fischer, M.F. Toney, B.T. O’Connor, Charge transport in highly face-on poly(3-hexylthiophene) films, J. Phys. Chem.y C 117, 17421 (2013). link

O. Awartani, B.I. Lemanski, H. Ro, L.J. Richter, D.M. DeLongchamp, B.T. O’Connor, Correlating stiffness, ductility, and morphology of polymer:fullerene films for solar cell applications, Adv. Energy Mater. 3, 3 (2013). link

H. Ro, B. Akgun, B.T. O’Connor, M. HHammond, R.J. Kline, C.R. Snyder, S.K. Satija, A.L. Ayzner, M.F. Toney, C.L. Soles, D.M. DeLongchamp, Poly(3-hexylthiophene) and [6,6]-Phenyl-C-61-butyric Acid Methyl Ester mixing in organic solar cells, Macromolecules 45, 6587 (2012). link

B. O’Connor, R.J. Kline, B.R. Conrad, L.J. Richter, D. Gundlach, M.F. Toney, D.M. DeLongchamp, Anisotropic structure and charge transport in highly strain-aligned regioregular poly(3-hexylthiophene), Adv. Funct. Mater. 21, 3697 (2011). link

B. O’Connor, E.P. Chan, C. Chan, B.R. Conrad, L.J. Richter, R.J. Kline, M. Heeney, I. McCulloch, C.L. Soles, D.M. DeLongchamp, Correlations between mechanical and electrical properties of polythiophenes. ACS Nano 4, 12 (2010). link

B. O’Connor, D. Nothern, K.P. Pipe, M. Shtein, High efficiency, broadband solar cell architectures based on arrays of volumetrically distributed narrowband photovoltaic fibers. Optics Express 18, 103 (2010). link

K.H. An, B. O’Connor, K.P. Pipe, M. Shtein, Organic photodetector with spectral response tunable across the visible spectrum by means of internal optical microcavity. Org. Electron., 10, 1152 (2009). link

B. O’Connor, C. Haughn, K.H. An, K.P. Pipe, M. Shtein, Transparent and conductive electrodes based on unpatterned, thin metal films. Appl. Phys. Lett. 93, 223304 (2)008. link

K.H. An, B. O’Connor, Y. Zhao, K.P. Pipe, M. Shtein, Scanning optical probe microscope with sub-micrometer resolution using an organic photodetector. Appl. Phys. Lett. 93, 033311 (2008). link

B. O’Connor, K.P. Pipe, M. Shtein, Fiber based organic photovoltaic devices. Appl. Phys. Lett. 92, 193306 (2008).link

Y. Zhao, K.H. An, S. Chen, B. O’Connor, K.P. Pipe, M. Shtein, Localized current injection and submicron organic light-emitting device on a pyramidal atomic force microscopy tip. Nano Letters 7, 3645 (2007). link

B. O’Connor, K.H. An, Y. Zhao, K.P. Pipe, M. Shtein, Fiber shaped organic light emitting device. Adv. Mater. 19, 3897 (2007). link

B. O’Connor, K.H. An, Y. Zhao, K.P. Pipe, M. Shtein, Enhanced optical field intensity distribution in organic photovoltaics using external coatings. Appl. Phys. Lett. 89, 233502 (2006). link

K.H. An, B. O’Connor, Y. Zhao, K.P. Pipe, M. Shtein, Organic light emitting device on a scanning probe cantilever. Appl. Phys. Lett. 89, 111117 (2006). link