Novel BDT-difluorophenyl polymers for organic photovoltaics
Translated title
Nyskabende BDT-Difluorophenyl baseret polymer til brug i organiske solceller
Authors
Mortensen, Morten ; Lavsen, Christian Linnebjerg
Term
4. Term
Education
Publication year
2016
Submitted on
2016-05-30
Pages
65
Abstract
Dette projekt syntetiserede en ny BDT-baseret donor-acceptor-kopolymer med difluorophenyl-enheder og integrerede den i organiske fotovoltaiske (solcelle) enheder. Den bedste effektvirkningsgrad (PCE) var 8 %. For at forstå ydeevnen nærmere karakteriserede vi enhederne med cyklisk voltammetri (CV), ultraviolet-synlig spektroskopi (UV-Vis) og atomkraftmikroskopi (AFM). Ud over hovedpolymeren fremstillede vi fire beslægtede polymerer baseret på to acceptorer og to donorer; donorvarianterne havde enten furan (iltindholdende) eller thiophene (svovlindholdende) grene på BDT-rygraden. Enheder med den thiophene-holdige polymer klarede sig bedre end enheder med den furan-holdige polymer, hvilket viser at udskiftning af ilt med svovl i polymerens aromatiske system kan forbedre ydeevnen.
This project synthesized a new BDT-based donor-acceptor copolymer containing difluorophenyl units and integrated it into organic photovoltaic (solar cell) devices. The best power conversion efficiency (PCE) achieved was 8%. To better understand performance, we characterized the devices with cyclic voltammetry (CV), ultraviolet-visible spectroscopy (UV-Vis), and atomic force microscopy (AFM). In addition to the main polymer, we prepared four related polymers built from two acceptors and two donors; the donor variants had either furan (oxygen-containing) or thiophene (sulfur-containing) branches on the BDT backbone. Devices made with the thiophene-containing polymer outperformed those made with the furan-containing polymer, showing that replacing oxygen with sulfur in the polymer’s aromatic system can improve performance.
[This abstract was generated with the help of AI]
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