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Titre :
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Effective light harvesting of tandem polymer solar cell (2011)
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Auteurs :
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Yi-Chun Chen, Auteur ;
Chao-Ying Yu, Auteur ;
Chih-Ping Chen, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Transactions of the ASME. Journal of solar energy engineering (Vol. 132 N° 2, Mai 2010)
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Article en page(s) :
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pp. [021103/1-6]
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Note générale :
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Energie Solaire
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Langues :
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Anglais
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Index. décimale :
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621.47
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Tags :
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Conducting polymer Solar cell Tandem
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Résumé :
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A novel soluble conjugated polymers, P2, with coplanar thiophene-phenylene-thiophene unit is designed and synthesized as suitable active material used in tandem cells to compensate the poly(3-hexylthiophene) (P3HT)/[6,6]-phenyl-C71 butyric acid methyl ester (PC71BM) bulk-heterojunction cell in this paper. P2 polymer bears advantages in both low optical bandgap (1.7 eV) and high hole mobility properties (3.4×10−3 cm2/V-s from field-effect transistor measurement). Furthermore, the electrochemical studies of P2 indicate desirable highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) band structure that enables a high open circuit voltage when pairing with PCBM acceptor. The best power conversion efficiency of this polymer solar cell thus far based on P2/PC71BM system with a weight ratio of 1:3 reached 4.4% with a short circuit current density (Jsc) of 10.2 mA/cm2, an open circuit voltage (Voc) of 0.81 V, and a fill factor (FF) of 0.53 under air mass (AM) 1.5 G (100 mW/cm2). The preliminary data of the tandem cell with indium tin oxide (ITO) glass/PEDOT:PSS/P2:PC71BM/TiOx/PEDOT:PSS/P3HT:PC71BM/TiOx/Al configuration has reached Jsc of 6.2 mA/cm2, Voc of 1.33 V, FF of 0.56 and an overall efficiency of 4.6% under AM 1.5 G (100 mW/cm2).
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DEWEY :
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621.47
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ISSN :
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0199-6231
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En ligne :
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http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JSEEDO000132000002021103000001&idtype=cvips&gifs=Yes&ref=no
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