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dc.contributor.advisorYu, Qiuming
dc.contributor.authorDong, Hao
dc.date.accessioned2019-08-14T22:30:36Z
dc.date.submitted2019
dc.identifier.otherDong_washington_0250O_20191.pdf
dc.identifier.urihttp://hdl.handle.net/1773/44098
dc.descriptionThesis (Master's)--University of Washington, 2019
dc.description.abstractA hole transport material poly(hydroxymethylated-3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT-MeOH:PSS) was synthesized using the oxidative chemical polymerization method and deployed in inverted p-i-n MAPbI3 perovskite solar cells (PVSCs). By introducing a methylhydroxyl (-MeOH) function group to the oxyethylene ring of EDOT, it lowers the highest unoccupied molecular orbital of PEDOT-MeOH. In addition, the MeOH function group allows the formation of hydrogen bonds among EDOT-MeOH monomers and with sulfate groups on PSS, promoting the growth of long chain PEDOT-MeOH and enhancing the doping efficiency. The work function and conductivity of PEDOT-MeOH:PSS were tuned via varying the amount of PSS and ferric oxidizing agent used in the polymerization and further via adding ethylene glycol as the secondary doping. The optimized PEDOT-MeOH:PSS-based PVSCs overperformed the PEDOT-PSS-based PVSCs because of better aligned energy level and enhanced conductivity of PEDOT-MeOH:PSS. This work provides new insights on developing hole transport materials to enable efficient inverted p-i-n PVSCs.
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.rightsnone
dc.subjectconductivity
dc.subjectethylene glycol modification
dc.subjectmethylhydroxyl functionalize
dc.subjectwork function
dc.subjectChemical engineering
dc.subject.otherChemical engineering
dc.titleTuning Work Function and Conductivity of Methylhydroxyl Functionalized PEDOT-MeOH:PSS as a Hole Transport Material for Perovskite Solar Cells
dc.typeThesis
dc.embargo.termsRestrict to UW for 1 year -- then make Open Access
dc.embargo.lift2020-08-13T22:30:36Z


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