An Electron-Deficient Building Block Based on the BâN Unit: An Electron Acceptor for All-Polymer Solar Cells.
Angew Chem Int Ed Engl
; 55(4): 1436-40, 2016 Jan 22.
Article
en En
| MEDLINE
| ID: mdl-26663513
ABSTRACT
A double BâN bridged bipyridyl (BNBP) is a novel electron-deficient building block for polymer electron acceptors in all-polymer solar cells. The BâN bridging units endow BNBP with fixed planar configuration and low-lying LUMO/HOMO energy levels. As a result, the polymer based on BNBP units (P-BNBP-T) exhibits high electron mobility, low-lying LUMO/HOMO energy levels, and strong absorbance in the visible region, which is desirable for polymer electron acceptors. Preliminary all-polymer solar cell (all-PSC) devices with P-BNBP-T as the electron acceptor and PTB7 as the electron donor exhibit a power conversion efficiency (PCE) of 3.38%, which is among the highest values of all-PSCs with PTB7 as the electron donor.
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MEDLINE
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En
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Angew Chem Int Ed Engl
Año:
2016
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Article