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Nanoporous Polymer Reflectors for Organic Solar Cells

Yu, Shudong; Guo, Bing; Johnsen, Siegbert; Wiegand, Gabriele; Lemmer, Uli; Guo, Xia; Zhang, Maojie; Li, Yongfang; Sprau, Christian; Hölscher, Hendrik; Colsmann, Alexander; Gomard, Guillaume

Abstract:
Due to their high transparency, electrodes fabricated from conductive polymers are often implemented in semitransparent organic solar cells. Opaque solar cells usually employ metal back electrodes with high reflectivity for best photon confinement in the light-harvesting layer. Herein, a bilayer back electrode comprising conductive polymers and nanofoamed poly(methyl methacrylate) (PMMA) is investigated, the latter of which creates diffuse reflection of the incoming light. By tuning the thickness of the nanofoamed PMMA layer, absorption and transmission of the solar cells can be tailored from opaque to vastly transparent. Due to its diffusive character, this versatile electrode enhances the light absorption in the wavelength regimes with lower absorption coefficient. The solar cells are particularly suited for deployment in frosted window applications.


Verlagsausgabe §
DOI: 10.5445/IR/1000140301
Veröffentlicht am 24.11.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Lichttechnisches Institut (LTI)
Materialwissenschaftliches Zentrum für Energiesysteme (MZE)
Institut für Katalyseforschung und -technologie (IKFT)
Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2194-4288, 2194-4296
KITopen-ID: 1000140301
HGF-Programm 38.01.02 (POF IV, LK 01) Materials and Interfaces
Erschienen in Energy technology
Verlag Wiley-VCH Verlag
Seiten Art.-Nr. 2100676
Vorab online veröffentlicht am 12.11.2021
Nachgewiesen in Scopus
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