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A Nanoparticle Approach towards Morphology Controlled Organic Photovoltaics (OPV)
Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000 Roskilde, Denmark
State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecule Synthesis and Functionalization and Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
Department of Biotechnology, Chemistry, and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, DK-9000 Aalborg, Denmark
* Author to whom correspondence should be addressed.
Received: 16 April 2012; in revised form: 24 May 2012 / Accepted: 4 June 2012 / Published: 11 June 2012
Abstract: Silicon nano-particles grafted with two different organic oligomers were prepared; the oligomers used were a phenylene-vinylene (PV) oligomer and a 3,3'''-didodecylquaterthiophene. The graftings were performed by the use of two different functional groups, the PV oligomer was grafted by a hydroxyl-group in the form of a phenol and a lithium derivative was used to graft the 3,3'''-didodecylquaterthiophene. The morphology and size of the grafted particles were analyzed by atomic force microscopy (AFM) and the extent of the grafting was analyzed by NMR. Organic photovoltaics with normal geometry (ITO/PEDOT:PSS/active layer/Al) were prepared using these materials as a donor and phenyl-C61-butyric acid methyl ester (PCBM) as the acceptor and yielded a power conversion efficiency (PCE) of 0.27%, an open circuit voltage (VOC) of 0.93 V, a short circuit current density (JSC) of 0.89 mA/cm2, and a fill factor (FF) of 32.5% for a lead device with an active area of 0.25 cm2.
Keywords: organic photovoltaics; silicon nano-particles; morphology control
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Andersen, T.R.; Yan, Q.; Larsen-Olsen, T.T.; Søndergaard, R.; Li, Q.; Andreasen, B.; Norrman, K.; Jørgensen, M.; Yue, W.; Yu, D.; Krebs, F.C.; Chen, H.; Bundgaard, E. A Nanoparticle Approach towards Morphology Controlled Organic Photovoltaics (OPV). Polymers 2012, 4, 1242-1258.
Andersen TR, Yan Q, Larsen-Olsen TT, Søndergaard R, Li Q, Andreasen B, Norrman K, Jørgensen M, Yue W, Yu D, Krebs FC, Chen H, Bundgaard E. A Nanoparticle Approach towards Morphology Controlled Organic Photovoltaics (OPV). Polymers. 2012; 4(2):1242-1258.
Andersen, Thomas R.; Yan, Quanxiang; Larsen-Olsen, Thue T.; Søndergaard, Roar; Li, Qi; Andreasen, Birgitta; Norrman, Kion; Jørgensen, Mikkel; Yue, Wei; Yu, Donghong; Krebs, Frederik C.; Chen, Hongzheng; Bundgaard, Eva. 2012. "A Nanoparticle Approach towards Morphology Controlled Organic Photovoltaics (OPV)." Polymers 4, no. 2: 1242-1258.