Coupling spatially and spectrally resolved optical measurements with a scanning probe system
department or school: Science, Faculty of
department or school: Physics and Astronomy, Department of
data provider: DSpace
degree campus: UBCV
creator: Roussy, Tanya
issued: 2016-09-08T02:02:56
issued: 2016
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: Developing a bottom-up understanding of the physics behind charge transfer processes on the nanometer scale will enable the focused design and synthesis of new materials which will revolutionize everything from solar cells to wearable electronics. Pushing our understanding of these processes to the nanometer scale is critical for next generation device development for two primary reasons. Firstly, modern electronic devices are fabricated ever smaller; to date IBM Research has already produced working chips using with gate widths only 14 atoms (7 nm) wide [1]. Secondly, for many devices which rely on charge transfer the important action is at the interface between materials; it is here that the energy level offset and other parameters can make or break a device. For modern organic devices, the interfacial region is in essence a nanometer-wide region: energy levels can differ by hundreds of meV only a few molecules away from an interface [2]. This thesis presents the design and execution of experiments which couple optical measurements with a scanning probe system. The marriage of optical and scanning probe systems enables simultaneous exploration of two complementary dimensions (optical and electronic) of the physics of the system under study, enabling the probing of parameters affecting charge transfer between single molecules. The custom-built system was used to explore optical and electronic properties of two prototypical organic molecules forming an acceptor-donor pair: 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA) and copper (II) pthalocyanine. This proof-of-concept will allow future users to explore a wide variety of systems which may offer clues to how charge transfer processes occur at the nanometer scale. In the first part of this work I describe the motivation for our experiment as well as the experimental design and set-up. In the second part I detail how we used the enhanced optical-electrical scanning probe to observe real-space energy levels, lu…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/59111
note: Coupling spatially and spectrally resolved optical measurements witha scanning probe systembyTanya RoussyB.A.Sc., The University of British Columbia, 2014A THESIS SUBMITTED IN PARTIAL FULFILLMENTOF THE REQUIREMENTS FOR THE DEGREE OFMaster of Applied ScienceinTHE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES(Engineering Physics)The University of British Columbia(Vancouver)August 2016c© Tanya Roussy, 2016AbstractDeveloping a bottom-up understanding of the physics behind charge transfer processes on thenanometer scale will enable the focused design and synthesis of new materials which will revo-lutionize everything from solar cells to wearable electronics.Pushing our understanding of these processes to the nanometer scale is critical for next generationdevice development for two primary reasons. Firstly, modern electronic devices are fabricated eversmaller; to date IBM Research has already produced working chips using with gate widths only14 atoms (7 nm) wide [1]. Secondly, for many devices which rely on charge transfer the importantaction is at the interface between materials; it is here that the energy level offset and other parameterscan make or break a device. For modern organic devices, the interfacial region is in essence ananometer-wide region: energy levels can differ by hundreds of meV only a few molecules awayfrom an interface [2].This thesis presents the design and execution of experiments which couple optical measurementswith a scanning probe system. The marriage of optical and scanning probe systems enables simul-taneous exploration of two complementary dimensions (optical and electronic) of the physics of thesystem under study, enabling the probing of parameters affecting charge transfer between singlemolecules. The custom-built system was used to explore optical and electronic properties of twoprototypical organic molecules forming an acceptor-donor pair: 3,4,9,10-perylene tetracarboxylicdianhydride (PTCDA) and copper (II) pthalocyanine. This proof-of-con…
has type: Thesis/Dissertation
date issued: 2016-11
is shown at: 10.14288/1.0314172
language: eng
degree discipline: Engineering Physics
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/59111