%0 Journal Article %1 AENM:AENM201602574 %A Liu, Shengjian %A Song, Xin %A Thomas, Simil %A Kan, Zhipeng %A Cruciani, Federico %A Laquai, Frédéric %A Bredas, Jean-Luc %A Beaujuge, Pierre M. %D 2017 %J Advanced Energy Materials %K new_material nonfullerene %P n/a--n/a %R 10.1002/aenm.201602574 %T Thieno3,4-cPyrrole-4,6-Dione-Based Polymer Acceptors for High Open-Circuit Voltage All-Polymer Solar Cells %U http://dx.doi.org/10.1002/aenm.201602574 %X While polymer acceptors are promising fullerene alternatives in the fabrication of efficient bulk heterojunction (BHJ) solar cells, the range of efficient material systems relevant to the “all-polymer” BHJ concept remains narrow, and currently limits the perspectives to meet the 10% efficiency threshold in all-polymer solar cells. This report examines two polymer acceptor analogs composed of thieno3,4-cpyrrole-4,6-dione (TPD) and 3,4-difluorothiophene (2FT) motifs, and their BHJ solar cell performance pattern with a low-bandgap polymer donor commonly used with fullerenes (PBDT-TS1; taken as a model system). In this material set, the introduction of a third electron-deficient motif, namely 2,1,3-benzothiadiazole (BT), is shown to (i) significantly narrow the optical gap (Eopt) of the corresponding polymer (by ≈0.2 eV) and (ii) improve the electron mobility of the polymer by over two orders of magnitude in BHJ solar cells. In turn, the narrow-gap P2TPDBT2FT analog (Eopt = 1.7 eV) used as fullerene alternative yields high open-circuit voltages (VOC) of ≈1.0 V, notable short-circuit current values (JSC) of ≈11.0 mA cm−2, and power conversion efficiencies (PCEs) nearing 5% in all-polymer BHJ solar cells. P2TPDBT2FT paves the way to a new, promising class of polymer acceptor candidates.

@article{AENM:AENM201602574, abstract = {While polymer acceptors are promising fullerene alternatives in the fabrication of efficient bulk heterojunction (BHJ) solar cells, the range of efficient material systems relevant to the “all-polymer” BHJ concept remains narrow, and currently limits the perspectives to meet the 10% efficiency threshold in all-polymer solar cells. This report examines two polymer acceptor analogs composed of thieno[3,4-c]pyrrole-4,6-dione (TPD) and 3,4-difluorothiophene ([2F]T) motifs, and their BHJ solar cell performance pattern with a low-bandgap polymer donor commonly used with fullerenes (PBDT-TS1; taken as a model system). In this material set, the introduction of a third electron-deficient motif, namely 2,1,3-benzothiadiazole (BT), is shown to (i) significantly narrow the optical gap (Eopt) of the corresponding polymer (by ≈0.2 eV) and (ii) improve the electron mobility of the polymer by over two orders of magnitude in BHJ solar cells. In turn, the narrow-gap P2TPDBT[2F]T analog (Eopt = 1.7 eV) used as fullerene alternative yields high open-circuit voltages (VOC) of ≈1.0 V, notable short-circuit current values (JSC) of ≈11.0 mA cm−2, and power conversion efficiencies (PCEs) nearing 5% in all-polymer BHJ solar cells. P2TPDBT[2F]T paves the way to a new, promising class of polymer acceptor candidates.}, added-at = {2017-05-15T10:28:52.000+0200}, author = {Liu, Shengjian and Song, Xin and Thomas, Simil and Kan, Zhipeng and Cruciani, Federico and Laquai, Frédéric and Bredas, Jean-Luc and Beaujuge, Pierre M.}, biburl = {https://www.bibsonomy.org/bibtex/23c9dee2f3f47638a246c7b59ac3dcf85/bretschneider_m}, doi = {10.1002/aenm.201602574}, interhash = {9d814fd86e9f8e1b60b9922dd7963f55}, intrahash = {3c9dee2f3f47638a246c7b59ac3dcf85}, issn = {1614-6840}, journal = {Advanced Energy Materials}, keywords = {new_material nonfullerene}, pages = {n/a--n/a}, timestamp = {2017-05-15T10:28:52.000+0200}, title = {Thieno[3,4-c]Pyrrole-4,6-Dione-Based Polymer Acceptors for High Open-Circuit Voltage All-Polymer Solar Cells}, url = {http://dx.doi.org/10.1002/aenm.201602574}, year = 2017 }