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Title: All-Solution-Processed, Ambient Method for ITO-Free, Roll-Coated Tandem Polymer Solar Cells using Solution-Processed Metal Films
Authors: Angmo, Dechan
Dam, Henrik F.
Andersen, Thomas R.
Zawacka, Natalia K.
Madsen, Morten V.
Stubager, Jorgen
Livi, Francesco
Gupta, Ritu
Helgesen, Martin
Carle, Jon E.
Larsen-Olsen, Thue T.
Kulkarni, G. U.
Bundgaard, Eva
Krebs, Frederik C.
Keywords: Energy & Fuels
Roll-To-Roll Processing
Solar Cells
Solution Processing
Organic Photovoltaic Devices
Issue Date: 2014
Publisher: Wiley-V C H Verlag Gmbh
Citation: Angmo, D; Dam, HF; Andersen, TR; Zawacka, NK; Madsen, MV; Stubager, J; Livi, F; Gupta, R; Helgesen, M; Carle, JE; Larsen-Olsen, TT; Kulkarni, GU; Bundgaard, E; Krebs, FC, All-Solution-Processed, Ambient Method for ITO-Free, Roll-Coated Tandem Polymer Solar Cells using Solution-Processed Metal Films. Energy Technology 2014, 2 (7) 651-659,
Energy Technology
Abstract: A solution-processed silver film is employed in the processing of top-illuminated indium-tin-oxide (ITO)-free polymer solar cells in single-and double-junction (tandem) structures. The nontransparent silver film fully covers the substrate and serves as the bottom electrode whereas a PEDOT:PSS/Ag grid forms the semitransparent top electrode. All layers are roll-coated/printed on a flexible substrate by using only two techniques: slot-die coating for up to 11 consecutive layers and flexo-printing for the last Ag grid layer. The slot-die coated Ag film is compared to an evaporated Ag film in terms of surface morphological and topographical properties and to ITO in terms of flexibility. The slot-die coated Ag film demonstrates extremely low roughness (a root-mean-square roughness of 3 nm was measured over 240 x 320 mu m(2) area), is highly conductive (< 1 Omega/square), highly flexible, and cost-effective in comparison to other reported metal films applied in polymer solar cells. Such properties result in high fill factors exceeding 50% in both single and tandem structures on large-area devices (1 cm(2)) and the corresponding efficiencies exceed 2%.
Description: Restricted Access
ISSN: 2194-4288
Appears in Collections:Research Articles (Kulkarni, G. U.)

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