| Partner: L. Giorgini |
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Recent publications
| 1. | Lanzi M.♦, Salatelli E.♦, Giorgini L.♦, Marinelli M.♦, Pierini F., Effect of the incorporation of an Ag nanoparticle interlayer on the photovoltaic performance of green bulk heterojunction water-soluble polythiophene solar cells, POLYMER, ISSN: 0032-3861, DOI: 10.1016/j.polymer.2018.07.012, Vol.149, pp.273-285, 2018 Abstract: Two water-soluble regioregular poly(3-alkylthiophene)s, incorporating aminic groups at the end of the side chains, have been synthesized using a post-polymerization functionalization procedure on a ω-bromine substituted polyalkylthiophene. The high solubility of the obtained polymers in water allowed for the preparation of “green” bulk heterojunction solar cells which reached a power conversion efficiency of 4.85% when PC61BM was used as electron-acceptor material. Improved optical absorption and photocurrent have been obtained by interposing a layer of Ag nanoparticles between the buffer and the photoactive layer, leading to a final power conversion efficiency of 5.51%. Keywords:Water-soluble polythiophene, Bulk heterojunction solar cell, Organic photovoltaic Affiliations:
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| 2. | Lanzi M.♦, Salatelli E.♦, Giorgini L.♦, Mucci A.♦, Pierini F., Di-Nicola F.P.♦, Water-soluble polythiophenes as efficient charge-transport layers for the improvement of photovoltaic performance in bulk heterojunction polymeric solar cells, EUROPEAN POLYMER JOURNAL, ISSN: 0014-3057, DOI: 10.1016/j.eurpolymj.2017.10.032, Vol.97, pp.378-388, 2017 Abstract: Water-soluble regioregular poly{3-[(6-sodium sulfonate)hexyl]thiophene} (PT6S) and poly{3-[(6-trimethylammoniumbromide)hexyl]thiophene} (PT6N) have been synthesized and employed both as photoactive layers for the assembling of “green” bulk-heterojunction organic solar cells and as charge-collection layers in a cell with “classic” architecture. While the photovoltaic performances obtained with the two aforementioned polymers were lower than the reference cell, their latter use allowed to notably increase the inherent J-V properties, leading to a considerable enhancement in the overall photovoltaic output. The power conversion efficiency of the optimized multilayer BHJ solar cell reached 4.78%, revealing a higher efficiency than the reference cell (3.63%). Keywords:Water-soluble polymer, Polythiophene derivative, Bulk heterojunction, Organic photovoltaic, Interfacial layer Affiliations:
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