PROFILE:
Bob Street
Bob's research interests are in large-area electronic materials and devices, including amorphous silicon (a-Si), flat panel x-ray image sensors, and more recently, printed organic semiconductors, flexible electronics, nanowire devices, and solar cells. He is exploring: printing technologies that could replace the photolithographic techniques traditionally used to create thin-film transistors; and solution-based organic materials to create large-area transistor and sensor arrays.
Bob’s previous work on digital x-ray imaging has been commercialized through PARC spin-off dPix, the world's leading source for high-resolution a-Si sensor arrays that provide the foundation for medical, industrial, military, and security X-ray imaging. dPix was acquired by Trixell (a Siemens Medical/ Phillips Medical/ Thomson-CSF joint venture), Planar Systems, and Varian Medical in 1999.
Bob holds 53 patents and has been honored with the American Physical Society David Adler Award and The American Institute of Physics prize for Industrial Applications of Physics. He has published more than 350 papers and articles and has served as Associate Editor of both the Journal of Materials Research and Solid State Science and Technology. Bob has also served on the National Research Council Committee for Material Science and Engineering, as well as the ICAMS (International Conference on Amorphous and Microcrystalline Semiconductors) Program Committee and International Advisory Committee.
Dr. Bob Street holds a Ph.D. and B.S. in physics, both from Cambridge University in England. He joined PARC in 1976.
PARC publications
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2013
Persistent photoconductivity effects in printed n-channel organic transistors
Journal of Applied Physics
March 2013
Kinetics of light induced defect creation in organic solar cells
Applied Physics Letters
30 January 2013
Origin of the tunable open circuit voltage in ternary blend bulk heterojunction organic solar cells
Journal of the American Chemical Society
January 2013
2012
Flexible, large-area sensor circuits fabricated by additive printing
2012 NanoTechnology for Defense Conference
8 August 2012
The identification of recombination centers in organic solar cells
TechConnect World 2012
21 June 2012
Flexible x-ray detector array fabricated with oxide thin film transistors
IEEE Electron Device Letters
May 2012
2011
Charge transport and recombination in organic solar cells
SPIE Optics and Photonics 2011
21 August 2011
Localized state distribution and its effect on recombination in organic solar cells
Physical Review B
12 August 2011
Band tails and polarons in organic solar cells
Organic Microelectronics & Optoelectronics Workshop VII
20 July 2011
Analysis of device stability through measurements of the electronic structure of organic solar cells
37th IEEE Photovoltaic Specialists Conference (PVSC)
19 June 2011
Surface-energy patterning for ink-jet printed flexible electronics
MRS Spring Meeting 2011
28 April 2011
Photoconductivity measurements of the electronic structure of organic solar cells
Physical Review B
April 2011
Influence of series resistance on the photocurrent analysis of organic solar cells
Organic Electronics
February 2011
Physical Review B
January 2011
2010
Amorphous silicon transistors and photodiodes
Book Chapter in Solar Cells and Their Applications
2010
Fast polymer semiconductor transistor by nano-particle self-assembly
Organic Electronics
December 2010
Experimental test for geminate recombination applied to organic solar cells
Physical Review B
September 2010
Study of inkjet printing parameters to fabricate LCD color filter
Journal of Imaging Science and Technology
2010 September/October
Jet-printed and dielectrophoretically aligned nanowires for large area electronics
Electronic Materials Conference 2010
25 June 2010
Jet-printed Si nanowires for flexible backplane applications
Nanotech Conference Technical Proceedings
23 June 2010
Determination of recombination mechanisms in organic solar cells
IEEE 35th Photovoltaic Specialists Conference
21 June 2010
2010 Prize for Industrial Applications of Physics
1 January 2010
2009
Compact model for forward subthreshold characteristics in polymer semiconductor transistors
Journal of Applied Physics
15 October 2009
Compact model for sub-threshold operation in polymer semiconductor thin film transistors
EMC 2009
24 June 2009
Defect identification in large area electronic backplanes
IEEE Journal of Display Technology
January 2009
2008
Carrier mobility, structural order, and solar cell efficiency of organic heterojunction devices
Applied Physics Letters
29 September 2008
Characterization of flexible image sensor arrays with bulk heterojunction organic photodiodes
SPIE Conference on Organic Field-Effect Transistors VII and Organic Semiconductors in Sensors and Bioelectronics
10 August 2008
Bias-induced change in effective mobility observed in polymer transistors
Physical Review B
15 April 2008
Flexible and printed electronics for displays and image sensors
The Future Prospect and Obstacles of Organic Electronics
25 February 2008
Flexible and printed electronics for displays and image sensors
The Future Prospects and Obstacles of Organic Electronics
25 February 2008
Gate bias stress effects due to polymer gate dielectrics in organic thin-film transistors
Journal of Applied Physics
15 February 2008
High work function materials for source/drain contacts in printed polymer thin film transistors
Applied Physics Letters
11 February 2008
Flexible image sensor array with bulk heterojunction organic photodiodes
Applied Physics Letters
2008 May 26
2007
Sensors and Actuators A
10 November 2007
Thermal cure effects on electrical performance of nanoparticle silver inks
Acta Materialia
October 2007
Low temperature a-Si:H photodiodes and flexible image sensor arrays patterned by digital lithography
Applied Physics Letters
6 August 2007
Digital lithographic processing for large-area electronics
Journal of the Society for Information Display
31 July 2007
All-additive ink-jet-printed display backplanes: materials development and integration
SID Journal
July 2007
Mechanical characterization of solution-derived nanoparticle silver ink thin films
Journal of Applied Physics
15 May 2007
Bias stress effects in organic thin film transistors
IEEE International Reliability Physics Symposium
15 April 2007
High work function materials for source/drain electrodes in printed polymer TFTs
2007 MRS Spring Meeting
9 April 2007
Flexible a-Si:H-based image sensors fabricated by digital lithography
MRS Spring Meeting 2007
9 April 2007
Dielectrics for all-additive jet-printed organic electronics (Invited paper)
2007 MRS Spring Meeting
9 April 2007
MRS Spring Meeting 2007
9 April 2007
Effects of mechanical stress on printed polymer-based TFTs on flexible display backplanes
Materials Research Society, 2007 Spring Meeting
9 April 2007
Effects of molecular oxygen and ozone on polythiophene-based thin-film transistors
Applied Physics Letters
20 March 2007
Nuclear Instruments & Methods A
11 March 2007
2006
Effects of thermal processing on properties of printed nano-Ag inks for polymer-based TFTs
MRS Fall Meeting 2006
27 November 2006
Stability of polymeric thin-film transistors
American Institute of Chemical Engineers National Meeting
11 November 2006
Surface induced self-encapsulation of polymer thin film transistors
Advanced Materials
November 2006
Toolset for printed electronics
International Conference on Digital Fabrication Technologies (DF 2006)
17 September 2006
Effects of mechanical stress on printed polymer-based TFTs on flexible display backplanes
2006 Gordon Research Conference (GRC) on Thin Films
30 July 2006
Jet-printed active-matrix backplanes and electrophoretic displays
13th International Workshop on Active-Matrix Flatpanel Displays and Devices
5 July 2006
Vertically integrated amorphous silicon color sensor arrays
IEEE Transactions on Electron Devices
1 July 2006
Medical Physics
1 June 2006
All additive ink jet printed backplanes for displays
34th Annual Northern California Electronic Materials Symposium
28 April 2006
Printed polymer-based TFTs for flexible display backplanes
USDC Flexible Display & Microelectronics Conference
7 February 2006
Vertically segregated polymer blends: their use in organic electronics
Journal of Macromolecular Science C: Polymer Reviews
January - March 2006
2005
Jet-printing of active-matrix TFT backplanes for displays and sensors (Invited paper)
Digital Fabrication 2005 Conference
18 September 2005
Flexible electrophoretic displays with jet-printed active-matrix backplanes
2005 SID International Symposium
25 May 2005
Status and opportunities for high efficiency OLED displays on flexible substrates
MRS Spring Meeting 2005
29 March 2005
Proceedings of the Spring 2005 Materials Research Society Meeting
28 March 2005
2004
Digital-lithographic processing for thin-film transistor array fabrication
Proceedings of the 20th International Conference on Amorphous and Microcrystalline Semiconductors
31 December 2004
All jet-printed polymer thin-film transistor active-matrix backplanes
Third Annual Printable Electronics and Displays Conference and Exhibition
9 November 2004
All jet-printed polymer thin-film transistor active-matrix backplanes
Applied Physics Letters
11 October 2004
All jet-printed polymer thin film transistor active-matrix backplanes (Invited talk)
American Chemical Society National Meeting
22 August 2004
Short channel effects in regioregular poly(thiophene) thin film transistors
Journal of Applied Physics
15 August 2004
Print-patterned polymer-semiconductor and amorphous silicon active-matrix display
USDC Third Annual Flexible Displays and Microelectronics Conference
10 February 2004
2003
Polymer thin-film transistor arrays for display backplanes patterned by stamping
MRS Fall Meeting 2003
1 December 2003
Advanced Materials
November 2003
Hydrogenated amorphous silicon thin-film transistor arrays fabricated by digital lithography
IEEE Electron Device Letters
9 September 2003
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related focus areas
related competencies
- large-area electronics
- semiconductors
- thin films
in the news
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U.S. Patents Awarded to Inventors in California
20 March 2011 | TMCnet
What PARC Will Do with Its Next 40 Years
27 September 2010 | eWeek
Innovation PARCs here
22 September 2010 | San Jose Mercury News
news releases
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Samsung Fine Chemicals Chooses PARC to Validate Use of New Materials for Printed Displays
12 November 2012
PARC Named Runner-Up for The Wall Street Journal Technology Innovation Award
16 October 2012
events
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Flexible, Large-Area Sensor Circuits
4 March 2013 | San Antonio, TX
Performance Analysis of Several Generations of Flat Panel X-ray Imagers Based on Polycrystalline Silicon TFTs
11 February 2013 | Orlando, FL