Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/64422
Título: | Dye-sensitized solar cells for efficient solar and artificial light conversion |
Autor(es): | Hora, Carolina Santos, Fátima Sales, M. G. F. Ivanou, Dzmitry Mendes, Adélio |
Palavras-chave: | Photonics Oxides Power conversion efficiency Layers Light |
Data: | 2019 |
Editora: | ACS |
Revista: | ACS Sustainable Chemistry & Engineering |
Citação: | Hora, Carolina; Santos, Fátima; Sales, M. G. F.; Ivanou, Dzmitry; Mendes, Adélio, Dye-sensitized solar cells for efficient solar and artificial light conversion. ACS Sustainable Chemistry & Engineering, 7(15), 13464-13470, 2019 |
Resumo(s): | Progress in dye-sensitized solar cells (DSSCs) has been benchmarked with N719 dye-based devices. However, power conversion efficiency (PCE) improvements performed in low-energy-performing devices cannot be extrapolated to high-performing ones. This points to the need for using a high PCE reference DSSC device, which preferably should be possible for preparation using readily available commercial reactants and parts. This study reports an optimized DSSC prepared with commercial reactants, displaying a PCE of up to 9.84% under simulated solar light and of 28.7% under artificial room light. The efficient light harvesting in the photoanode and electron recombination suppression in the photoanode/electrolyte interface were systematically optimized; the thickness and light-scattering ability of the photoanode mesoporous layers were tuned to maximize light harvesting and minimize the recombination losses. Electron back recombination with electrolyte was minimized using a TiO2 blocking layer and treating the mesoporous layer of TiO2 with TiCl4. Finally, despite the use of a light-scattering TiO2 coating over the mesoporous layer, the use of a light reflection layer applied to the back of the devices proved to improve the PCE further. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/64422 |
DOI: | 10.1021/acssuschemeng.9b02990 |
e-ISSN: | 2168-0485 |
Versão da editora: | http://pubs.acs.org/journal/ascecg |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_53566_1.pdf Acesso restrito! | 1,18 MB | Adobe PDF | Ver/Abrir |