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dc.contributor.authorBobbara, Sanyasi
dc.contributor.otherQueen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.))en
dc.description.abstractOrganic semiconductors (OSs) are gaining attention due to their processability, optical and electrical tunability, and cost-effectiveness. This class of materials is most suitable for flexible electronics and bioelectronics, especially when processed in a solution with inorganic or hybrid materials. However, the charge mobility within these materials is impeded by structural and energetic disorder caused by defects that ‘trap’ the charge carriers. The physical locations of the traps and their distribution of energies dictate the charge transport in a device. The present work probes both the interface and bulk defect-states in polymer-based diodes. Tests were performed on the polymers P3HT, MDMO:PPV and PCDTBT. Various techniques were used to record steady-state current-voltage (I-V), transients of CELIV (Charge Extraction by Linearly Increasing Voltage), DiTC (Dark-injection Transient Current) and the photoluminescence of encapsulated and unencapsulated polymer-based diodes, as well as electroluminescence from encapsulated polymer-based diodes. This study also observes the effects of ultra-violet light-soak on these devices. Charge transport dynamics were investigated over a wide time range, and at both microscopic and macroscopic scales. Results from the encapsulated and unencapsulated devices were compared in order to determine the impact of exposure to air. The cathode’s work function decreased during the light-soak, possibly due to UV-induced oxygen desorption from the polymer-cathode interface.en_US
dc.relation.ispartofseriesCanadian thesesen
dc.rightsCC0 1.0 Universal*
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canadaen
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreementen
dc.rightsIntellectual Property Guidelines at Queen's Universityen
dc.rightsCopying and Preserving Your Thesisen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectOrganic Semiconductoren_US
dc.titleEffect of Encapsulation and Light-Soaking on Charge Transport Properties in Organic Semiconductor-Based Diodesen_US
dc.description.degreeDoctor of Philosophyen_US
dc.contributor.supervisorNunzi, Jean-Michel
dc.contributor.departmentPhysics, Engineering Physics and Astronomyen_US
dc.embargo.termsMost of the work in this thesis has not been published in the Journals yet. Currently I am working on preparing the drafts the publications on various topics that I have worked on. In this regard, I would like to request that the part or most of the thesis be held from the public access for at least 6 months.en_US

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CC0 1.0 Universal
Except where otherwise noted, this item's license is described as CC0 1.0 Universal