High-efficiency inverted dithienogermole-thienopyrrolodione-based polymer solar cells
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 115-120 |
Journal / Publication | Nature Photonics |
Volume | 6 |
Issue number | 2 |
Publication status | Published - Feb 2012 |
Externally published | Yes |
Link(s)
Abstract
Inverted polymer bulk heterojunction solar cells have received a great deal of attention because of their compatibility with large-scale roll-to-roll processing. The inverted cell geometry has the following structure: substrate (rigid or flexible)/indium tin oxide/electron-transporting layer/photoactive layer/hole-transporting layer/top anode. Solution-processed metal-oxide films, based on materials such as ZnO and TiO2, are typically used as the electron-transporting layers. Here, we demonstrate enhanced charge collection in inverted polymer solar cells using a surface-modified ZnO-polymer nanocomposite electron-transporting layer. Using this approach, we demonstrate inverted polymer solar cells based on a low-bandgap polymer with an alternating dithienogermole-thienopyrrolodione repeat unit (PDTG-TPD) with certified power conversion efficiencies of 7.4%. To our knowledge, this is the highest efficiency reported to date for polymer solar cells with a device architecture compatible with the roll-to-roll process. © 2012 Macmillan Publishers Limited. All rights reserved.
Research Area(s)
Citation Format(s)
High-efficiency inverted dithienogermole-thienopyrrolodione-based polymer solar cells. / Small, Cephas E.; Chen, Song; Subbiah, Jegadesan et al.
In: Nature Photonics, Vol. 6, No. 2, 02.2012, p. 115-120.
In: Nature Photonics, Vol. 6, No. 2, 02.2012, p. 115-120.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review