Influence of the polymer architecture on morphology and device properties of polymer bulk heterojunction photovoltaic cells

M.M. Koetse, J. Sweelssen, T. Franse, S.C. Veenstra, J.M. Kroon, X.N. Yang, A.A. Alexeev, J. Loos, U.S. Schubert, H.F.M. Schoo

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

9 Citaten (Scopus)

Samenvatting

Polymer bulk hetero junction solar cells were made from poly(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene-vinylene) (MDMO-PPV) as donor and poly(cyanoetherphenylenevinylene) (PCNEPV) derivatives as acceptor material. In this paper we start out with discussing the synthesis of the materials. Subsequently, the main issues concerning the devices are treated. Annealing the devices yielded devices with encouraging efficiencies of 0.5% (1 sun, 100mW/cm2), as calculated from the maximum power points (MPP). AFM studies revealed that this anneal step improves especially the interface of the active layer with the under laying PEDOT:PSS, although mobility and morphology changes can not be ruled out. Lowering the molecular weight (Mw) of the MDMO-PPV gave a slight improvement of the device performance. Decreasing the Mw of the acceptor material, MDMO-PCNEPV (PCNEPV derivative with the same side chains as MDMO-PPV) and optimizing the layer thickness led to a device with an efficiency of 0.65%. Finally we looked into the influence of the nature of the side chains on the acceptor polymer. The results suggest that the closer the resemblance between donor and acceptor is the better the device performance.
Originele taal-2Engels
TitelProceedings of the International Society for Optical Engineering (SPIE): Organic Photovoltaics IV, 7-8 August 2003, San Diego, California, USA
RedacteurenZ.H. Kafafi, P.A. Lane
Plaats van productieBellingham, Wash.
UitgeverijSPIE
Pagina's119-128
ISBN van geprinte versie0-8194-5088-X
DOI's
StatusGepubliceerd - 2004
Evenementconference; Organic photovoltaics IV : 7 - 8 August 2003, San Diego, California, USA -
Duur: 1 jan 2004 → …

Publicatie series

NaamProceedings of SPIE
Volume5215
ISSN van geprinte versie0277-786X

Congres

Congresconference; Organic photovoltaics IV : 7 - 8 August 2003, San Diego, California, USA
Periode1/01/04 → …
AnderOrganic photovoltaics IV : 7 - 8 August 2003, San Diego, California, USA

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