| dc.identifier.uri | http://hdl.handle.net/11401/76280 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.language.iso | en_US | |
| dc.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dc.type | Dissertation | |
| dcterms.abstract | It is known that morphological, optical and electrical properties of polymer-fullerene nanoparticle organic photovoltaic devices (OPVs) are significantly influenced by individual and integrated structures of the components blended together as photovoltaic active layers. In many cases, conventional thermal and solvent annealing processes do not provide robust control over multi-interfacial systems; therefore, the true potentials of OPVs are still limited with these post-processing treatments available up to now. In this thesis, I report alternative use of supercritical CO2 (scCO2) as a low-temperature and green plasticization agent. A poly(3hexylthiophene)-phenyl-C61-butyric acid methyl ester (P3HT-PCBM) blend system was used as a model system, and the effects of various CO2 process conditions, thickness of the blend films, filler concentrations on the structures were investigated by using a suite of surface sensitive techniques including X-ray diffraction, neutron reflectivity, and atomic force microscopy. In addition, I performed conductivity experiments for the scCO2 treated P3HT/PCBM films, demonstrating that the defect densities, charge trap densities, and carrier concentrations are significantly improved by the optimized scCO2 condition. The understanding of the structure-property relationship would lead to development of new polymer-based OPVs. | |
| dcterms.available | 2017-09-20T16:49:54Z | |
| dcterms.contributor | koga, tadanori | en_US |
| dcterms.contributor | sokolov, jonathan | en_US |
| dcterms.contributor | venkatesh, t.a. | en_US |
| dcterms.contributor | nam, chang-yong. | en_US |
| dcterms.creator | Sendogdular, Levent | |
| dcterms.dateAccepted | 2017-09-20T16:49:54Z | |
| dcterms.dateSubmitted | 2017-09-20T16:49:54Z | |
| dcterms.description | Department of Materials Science and Engineering. | en_US |
| dcterms.extent | 154 pg. | en_US |
| dcterms.format | Monograph | |
| dcterms.format | Application/PDF | en_US |
| dcterms.identifier | http://hdl.handle.net/11401/76280 | |
| dcterms.issued | 2015-05-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Made available in DSpace on 2017-09-20T16:49:54Z (GMT). No. of bitstreams: 1
Sendogdular_grad.sunysb_0771E_12700.pdf: 5600293 bytes, checksum: 29d838c77076e473546b8075815cc68c (MD5)
Previous issue date: 2015 | en |
| dcterms.publisher | The Graduate School, Stony Brook University: Stony Brook, NY. | |
| dcterms.subject | Materials Science | |
| dcterms.subject | bulk heterojunction solar cell, p3ht-pcbm, supercritical co2 | |
| dcterms.title | Green CO2 Processing for Manipulating Structures and Electrical Properties of Organic Photovoltaic Devices | |
| dcterms.type | Dissertation | |
