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Title: Homo-Tandem Polymer Solar Cells with V<inf>OC</inf>1.8 V for Efficient PV-Driven Water Splitting
Authors: Neophytou, Marios 
Beaujuge, Pierre M. 
Hamid, Mahmoud Abdul 
Gao, Yangqin 
Gaïtis, Alexandre 
Takanabe, Kazuhiro 
Le Corre, Vincent M. 
Major Field of Science: Engineering and Technology
Field Category: Mechanical Engineering;Materials Engineering
Keywords: bulk heterojunction solar cells;homo‐tandem;multijunction devices;organic photovoltaics;PCBM;PV‐driven water splitting
Issue Date: 1-Jan-2016
Source: Advanced Materials,2016, vol. 28, no. 17, pp. 3366-3373
Volume: 28
Issue: 17
Start page: 3366
End page: 3373
Journal: Advanced Materials 
Abstract: High-voltage tandem and triple-junction polymer solar cells (PSCs) were demonstrated by using one of the highest- V OC, high-efficiency polymer donors in bulk heterojunction (BHJs) with fullerenes, namely poly(benzo[1,2- b :4,5- b'] dithiophene?thieno[3,4- c ]pyrrole-4,6-dione) (PBDTTPD). While the efficiency of PBDTTPD-based single-junction PSCs is limited by incomplete optical absorption, we show that homo-tandem PSCs with MoO3 /ultrathin Al/ZnO intermediate recombination layers can achieve higher PCE values. The PV performance of single-junction PBDTTPD:PC 71 BM PSCs were investigated with the standard device structure ITO/PEDOT:PSS/PBDTTPD:PC71 BM/Ca/Al. Next, the potential for further PCE increments were examined via a triple-junction PSC device approach, using the same ZnO/Al/MoO3 interconnection layer between the three subcells. PBDTTPD homo-tandem PSCs yield high operating voltages of 1.54 V at their maximum power point, providing sufficient potential for the dissociation of water and the evolution of hydrogen and oxygen in a standard electrochemical cell.
ISSN: 1521-4095
DOI: 10.1002/adma.201504633
Rights: © Wiley
Type: Article
Affiliation : Cyprus University of Technology 
King Abdullah University of Science and Technology 
Appears in Collections:Άρθρα/Articles

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