In situ X-ray Diffraction Study of High Performance Organic Semiconductor Polymorphism Zhenan Bao, Stanford University, DMR 1303178 Flexible, transparent.

Slides:

Advertisements

Similar presentations

CHESS DMR _5_1 Look fast: Crystallization of conjugated molecules probed in-situ and in real time Joel Brock, Cornell University, DMR

Advertisements

Structure of a Pentacene Monolayer Deposited on SiO 2 : Role of Trapped Interfacial Water Significance Organic semiconductors have potential applications.

Thickness (nm) Wavelength (nm) Tunable asymmetric reflectance in percolating silver films Miriam Deutsch, University of Oregon,

LCLS Dan Imre, Brookhaven National Laboratory Philip Anfinrud, National Institutes of Health John Arthur, Stanford Synchrotron Radiation Laboratory Jerry.

National Science Foundation Developing Oxides for Solar Energy Conversion Steven May, Drexel University, DMR Outcome: Researchers at Drexel University.

CHESS DMR Pi stacking improves organic semiconductors Joel Brock, Cornell University, DMR Inducing different in- and out-of-plane.

Chemical Nanoparticle Deposition of Oxide Nanostructured Thin Films 6. Conclusions 2. Experimental Setup 1. Abstract We have developed a novel approach.

ECE 491 Meeting PVD Synthesis and electrical characterization of «

National Science Foundation Silicon Carbide Nanowires on Graphene – Synthesis, Characterization and Application Roya Maboudian, University of California-Berkeley,

Nanocrystallinity Engineering: Tailoring Properties and Functionalities of Metal Nanoparticles Min Ouyang, University of Maryland, DMR

MRI: Acquisition of a small angle X-ray diffractometer for in situ measurements of liquid to solid samples over a wide range of temperatures Mark A. Snyder,

National Science Foundation Material for Future Low-Power Electronics Daniel Gall, Rensselaer Polytechnic Institute, DMR Outcome: Researchers at.

Nonequilibrium, Single-Molecule Studies of Protein Unfolding Ching-Hwa Kiang, Rice University, DMR We used the atomic force microscope to manipulate.

Nathan Duderstadt, Chemical Engineering, University of Cincinnati Stoney Sutton, Electrical Engineering, University of Cincinnati Kate Yoshino, Engineering.

Exposure Tool for Photolithography on non-flat Samples Wilhelmus J. Geerts, Texas State University – San Marcos, DMR In this project we develop.

CHESS DMR _1 Shake It Up – printing thin film organic devices Joel D. Brock, Cornell University, DMR Journal cover uses this.

Improving ZnO for Use in Ultraviolet Light Emission and Sensor Applications Larry Halliburton, West Virginia University, DMR Zinc oxide (ZnO) is.

Solar cell efficiency, self-assembly and dipole-dipole interactions of isomorphic narrow bandgap molecules Alan J. Heeger, University of California-Santa.

Wet electrostatics and biomolecular self-assembly Gerard C. L. Wong, University of Illinois at Urbana Champaign, DMR Ring-like stains are commonly.

PbSe Nanocrystals (NCs) -from synthesis to applications- by Razvan-Ionut Stoian Oklahoma State University, Department of Physics Motivation General properties.

Attosecond Light and Science at the Time-scale of the Electron –

Charge Photogeneration and Recombination in Organic Semiconductors, Lewis Rothberg, University of Rochester, DMR (with M. Rubner MIT MRSEC, T.

“Electron dynamics in organic semiconductors and at organic metal interfaces” Xiaoyang Zhu, University of Minnesota, NSF DMR March 1 st,

Interfacial Characteristics of Semi fluorinated Polymers Dvora Perahia (Clemson University) DMR Thin layers of semifluorinated and fluorinated.

Mechanisms of ultra-smoothing induced by ion beam erosion Randall L. Headrick, University of Vermont, DMR Ion erosion of solid surfaces is known.

FRG: M n+1 AX n Phase Solid Solutions: Unique Opportunities at Engineering Bulk and Surface Properties Micheal W. Barsoum, Drexel University, DMR

Building a Better Pentacene with Excellent Photooxidative Properties and Thin Film Morphology Brittany Chambers, Jonathan Briggs, Weimin Lin, Glen P. Miller*

Bridging Atomistic to Continuum Scales – Multiscale Investigation of Self-Assembling Magnetic Dots Katsuyo Thornton (University of Michigan Ann Arbor)

Superhydrophilic Surface by Aluminum-Induced Crystallization of Amorphous Silicon Ken Kollias Pennsylvania State University Dr. Min Zou Mechanical Engineering.

“Bottom-Up” Design of Nanostructured Conducting Polymer Thin Films Evgueni E. Nesterov, Louisiana State University & Agricultural and Mechanical College,

Eliminating Parasitic Slit Scattering in Small Angle X-ray Diffractometers Cyrus R. Safinya, UC Santa Barbara, DMR Our instrumentation development.

Two State Lipid-Protein Bio-Nanotubes with Open and Closed Ends C. R. SAFINYA, UC Santa Barbara, DMR The electrostatic interactions between Microtubules.

CAREER: Self-Assembly of Polyunsaturated Lipids and Cholesterol In The Cell Membrane. Linda S. Hirst, University of California-Merced, DMR Phase.

Nano-electronics Vision: Instrumentation and methods for analysis of atomic scale physical properties, and methods to correlate these properties with nano-electronic.

Organic Electronics Presented By: Mehrdad Najibi Class Presentation for Advanced VLSI Course.

EAGER: Chemical Design for Controlling Electronic Properties of Organic Semiconductors and Molecules via Edge-On Gating Luping Yu, University of Chicago,

Chemical and Materials Engineering Department, University of Cincinnati, Cincinnati, OH Nanoscale Ni/NiO films for electrode and electrochemical Devices.

Collaborative Research: Analysis of Defects and Their Causes in Bulk Aluminum Nitride Crystals – Jharna Chaudhuri, Texas Tech University, Lubbock, TX DMR

What is Nanionics? Nanoionics centers on the manipulation of space charge at ionic interfaces or junctions to control ionic conduction. Our Vision: Explore/exploit.

Electrical Transport in Thin Film Nanostructures Hanno H. Weitering, The University of Tennessee, DMR Competing periodicities in a single atom.

Structure-Function-Property Relationships in Charged Conjugated Polymers (CCPs) Thuc-Quyen Nguyen DMR  The aim of this project is to understand.

BCC Ti/BCC Nb HCP Ti/BCC Nb Phase Stability in Thin Metallic Multilayers Gregory B. Thompson, University of Alabama Tuscaloosa, DMR Intellectual.

Development of Scatterless Hybrid Slits Led to New High Flux Single Aperture SAXS Design Cyrus R. Safinya, University of California-Santa Barbara, DMR.

Nanoscale Science and Engineering. Nanoscale Science and Engineering embodies fundamental research and technology development of materials, structures,

Electronic Properties of Thin Film Organic Superconductors studied using Synchrotron Radiation-based Soft X-Ray Spectroscopies Kevin E. Smith, Boston University,

1 um We seek to understand the electrical and optical properties of single organic semiconducting molecules contacted on either end by metal electrodes.

The use of polymer layers in light emitting devices has many applications in flexible devices and electronics, and relies on the ability of these polymers.

National Science Foundation GOALI: Epitaxial Growth of Perovskite Films and Heterostructures by Atomic Layer Deposition and Molecular Beam Epitaxy John.

Ferroelectric Nanolithography Extended to Flexible Substrates Dawn A. Bonnell, University of Pennsylvania, DMR Recent advances in materials synthesis.

Solution Aging Impact on the Voiding in Cu-Solder Joints A completely electrochemical scheme has been proposed for synthesis of nanoporous Au (NPG) based.

National Science Foundation Sb-doped SnO 2 as a transparent contact on InGaN/GaN LEDs James S. Speck, University of California-Santa Barbara, DMR

From quasi-2D metal with ferromagnetic bilayers to Mott insulator with G-type antiferromagnetic order in Ca 3 (Ru 1−x Ti x ) 2 O 7 Zhiqiang Mao, Tulane.

Split-gate Organic Field Effect Transistors: Control over Charge Transport Alan J. Heeger, University of California-Santa Barbara, DMR Photo of.

Tunable Electron-Phonon Coupling in Carbon Nanotubes Moonsub Shim, University of Illinois, DMR EFEF K. Nguyen, A. Gaur, & M. Shim, Phys. Rev. Lett.

The Light Emitting Field Effect transistor (LEFET) as the route to injection lasers fabricated from luminescent semiconducting polymers Alan J. Heeger,

 Characterizing the Order in 2D Block Copolymer Single Crystals Edward J. Kramer, University of California-Santa Barbara, DMR D single crystal.

Magnetotransport Studies of Organic Spin Valves A. M. Goldman, University of Minnesota, DMR Graph of the resistance versus magnetic field at 100K.

Direct Imaging of Aligned Neurofilament Networks Assembled in Microchannels Neurofilaments (NFs) are major constituents of axons and dendrites of vertebrate.

Spin at the Nanoscale: Material Synthesis and Fundamental Physics Min Ouyang, University of Maryland – College Park, DMR In the FY08, we continued.

National Science Foundation Outcome: Unique vertical aligned nanocomposite thin films with multifunctionalities Impact: Highly strained and ordered nanostructured.

Ion Transport in Beta-Gallia Rutile Intergrowths Doreen Edwards, Alfred University, DMR Beta-gallia-rutile (BGR) intergrowths possess 1-D tunnels.

Li Zeng1, M. Moghadam1, D. Buchholz1, D. Keane3, Tobin J

SEMINAR 1. Title : Organic/2D material based devices for flexible electronics 2. Speaker : Tae Hoon Lee ( Kwangwoon University ) 3. Time : 16:00.

SEMINAR 1. Title : Solution-based Thin-film Formation of Carbon and Organic Materials for Field-Effect Transistors and Sensors 2. Speaker : Steve.

Single-molecule transistors: many-body physics and possible applications Douglas Natelson, Rice University, DMR (a) Transistors are semiconductor.

MBE Growth of Graded Structures for Polarized Electron Emitters

Crystallization of Thin Films under Spatial Confinement

Novel Characterization Technique for 2D materials: LEEM/μLEED-IV Zhongwei Dai,1 Maxwell Grady,1 Wencan Jin,2 Jerry I. Dadap,2 Richard M. Osgood, Jr.,2.

4-year PhD in Nanoscience

Structures and Defects at Interfaces in Organic Molecular Heterostructures Paul G. Evans, Department of Materials Science and Engineering, University of.

Presentation transcript:

In situ X-ray Diffraction Study of High Performance Organic Semiconductor Polymorphism Zhenan Bao, Stanford University, DMR Flexible, transparent and low cost electronic devices based on organic semiconductors are being actively explored. To realize such applications, the charge carrier mobilities of organic semiconductors must be improved. 6,13(bis- triisopropylsilylethynyl)pentacene (TIPS-pentacene), a small molecule organic semiconductor, adopts metastable polymorphs possessing significantly faster charge transport than the equilibrium crystal when deposited using the solution shearing method. We utilize a combination of high-speed polarized optical microscopy, in situ microbeam grazing incidence wide angle X-ray scattering and molecular simulations to understand the mechanism behind formation of metastable TIPS-pentacene polymorphs during solution shearing. We observe that thin film crystallization occurs first at the air-solution interface, and nanoscale vertical spatial confinement of the solution results in formation of metastable polymorphs, a one-dimensional and large-area analogy to crystallization of polymorphs in nanoporous matrices. We demonstrate metastable polymorphism can be tuned with unprecedented control and produced over large areas by varying physical confinement conditions. Giri, G., Li, R., Smilgies, D.M., Li, E.Q., Chiu, M., Lin, D.W., Allen, R., Diao, Y., Mannsfeld, S.C.B., Thoroddsen, S.T., Bao, Z. and Amassian, A. (2014) Nature Communications. 5, a) Setup of the in-situ experiment. b) In-situ, high speed X-ray scattering data shows the equilibrium polymorph forms earlier than the metastable polymorph of TIPS-pentacene. c) Hypothesis of film confinement causing metastable film growth.

In situ X-ray Diffraction Study of High Performance Organic Semiconductor Polymorphism Zhenan Bao, Stanford University, DMR Education: This work was carried out by an interdisciplinary team, including students and postdocs with backgrounds in organic synthetic chemistry, x-ray crystallography, theoretical characterization, physics, electrical engineering, and chemical engineering. We hosted five Stanford undergraduate students throughout the academic year and three REU students in the summer, who worked on sample preparation and characterization, surface preparation and characterization, and transistor device preparation and testing. Graduate students and postdocs in the lab organized a course on organic electronics that was presented to middle and high school students as part of the SPLASH program at Stanford. The goal of this course was to educate young students about electronic materials research, to get them excited about science as a whole, and to answer questions about how to pursue a research career path. Societal Impacts and Technological Output: The research outlined will impact society by making organic electronics cheaper and more reliable for photovoltaics, ID tags and sensors. Photo of graduate students and postdocs from Bao group discussing science, doing demonstrations and hands-on experiments with local middle school and high school students.