Enhancement of organic solar cell efficiency by patterning the PEDOT:PSS hole transport layer using nanoimprint lithography

Je Hong Choi, Hak Jong Choi, Ju Hyeon Shin, Hyeong Pil Kim, Jin Jang, Heon Lee

    Research output: Contribution to journalArticlepeer-review

    34 Citations (Scopus)

    Abstract

    In order to improve the conversion efficiency of organic photovoltaic (OPV) cells, nano-patterned poly (3,4-ethylenedioxythiophene) poly (styrenesulfonate) (PEDOT:PSS) was used as a hole transfer layer (HTL). Using nanoimprint lithography, a process that is easily applied to large-area substrates, a spherical array of PEDOT:PSS droplets was formed. The effect of the PEDOT:PSS nanostructure was characterized by optical and electrical measurements. Because the hemispherical array of PEDOT:PSS scatters light efficiently, absorption of the incident light increases when the nanostructured layer is employed. The conversion efficiency of the nano-patterned OPV cells is 25% larger than that of non-patterned OPV cells, due to the increase in short-circuit current (J sc).

    Original languageEnglish
    Pages (from-to)3180-3185
    Number of pages6
    JournalOrganic Electronics
    Volume14
    Issue number12
    DOIs
    Publication statusPublished - 2013

    Keywords

    • Nanoimprint lithography
    • Organic photovoltaics
    • PEDOT:PSS
    • Patterning

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Biomaterials
    • General Chemistry
    • Condensed Matter Physics
    • Materials Chemistry
    • Electrical and Electronic Engineering

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