Photovoltaïque organique : étude de la morphologie de films minces, conception, synthèse et étude de petites molécules pour leur utilisation en hétérojonction en volume dans des dispositifs photovoltaïques. / Daniel Hernandez Maldonado  

Public ISBD Titre : Photovoltaïque organique : étude de la morphologie de films minces, conception, synthèse et étude de petites molécules pour leur utilisation en hétérojonction en volume dans des dispositifs photovoltaïques. Type de document : texte imprimé Auteurs : Daniel Hernandez Maldonado, Auteur ; Kathleen Moineau Chane-Ching, Directeur de thèse Année de publication : 2015 Langues : Anglais (eng) Tags : MOLECULES ORGANIZATION  BLEND MORPHOLOGY  MOLECULAR ENGINEERING  LOW BAND GAP MATERIALS  P3HT  NI-BDT  CHARGE TRANSFER  SILOCAO  BZ(T1CAO)2  BZ(T1CAEH)2  BHJS  ORGANIC SOLAR CELLS Résumé : "In the present work, we present a comprehensive study in solution and on thin films of pristine P3HT and of nickel bisdithiolene complexes (Ni-bdt), and their blends, in order to understand how poly(3-hexylthiophene) P3HT interacts with those molecules. The most encouraging result was obtained with a complex able to self-organise in hexagonal columnar liquid crystal phases that shows organising properties when blended with P3HT. This major result brings knowledge about improving order in polymer blends that could also have a positive impact on charge transfer phenomena. We have also designed and synthesised 3 new low band gap small molecules, SilOCAO, Bz(T1CAO)2 and Bz(T1CAEH)2, by using innovating synthetic methodologies. These molecules were strategically designed via semi-empirical calculations (B3LYP/6-31G*) to match their energetic levels (LUMO and HOMO) with those of nickel bisdithiolene molecules for an optimised charge transfer. Their syntheses have been described, and their properties have been fully investigated by using different techniques such as UV-visible spectroscopy, photoluminescence, nuclear magnetic resonance (NMR), mass spectroscopy (MS), electrochemistry, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The synthesised molecules have been used in organic solar cells prototypes. Promising results have been obtained, in particular for SilOCAO as the electron-donor associated with fullerene derivatives as the acceptors in bulk heterojunction." Document : Thèse de Doctorat Etablissement_delivrance : Université de Toulouse 3 Date_soutenance : 16/07/2015 Ecole_doctorale : Science de la matière (université Toulouse III P. Sabatier) Domaine : Chimie moléculaire Localisation : LCC En ligne : http://thesesups.ups-tlse.fr/2862/ Photovoltaïque organique : étude de la morphologie de films minces, conception, synthèse et étude de petites molécules pour leur utilisation en hétérojonction en volume dans des dispositifs photovoltaïques. [texte imprimé] / Daniel Hernandez Maldonado, Auteur ; Kathleen Moineau Chane-Ching, Directeur de thèse . - 2015. Langues : Anglais (eng) Tags : MOLECULES ORGANIZATION  BLEND MORPHOLOGY  MOLECULAR ENGINEERING  LOW BAND GAP MATERIALS  P3HT  NI-BDT  CHARGE TRANSFER  SILOCAO  BZ(T1CAO)2  BZ(T1CAEH)2  BHJS  ORGANIC SOLAR CELLS Résumé : "In the present work, we present a comprehensive study in solution and on thin films of pristine P3HT and of nickel bisdithiolene complexes (Ni-bdt), and their blends, in order to understand how poly(3-hexylthiophene) P3HT interacts with those molecules. The most encouraging result was obtained with a complex able to self-organise in hexagonal columnar liquid crystal phases that shows organising properties when blended with P3HT. This major result brings knowledge about improving order in polymer blends that could also have a positive impact on charge transfer phenomena. We have also designed and synthesised 3 new low band gap small molecules, SilOCAO, Bz(T1CAO)2 and Bz(T1CAEH)2, by using innovating synthetic methodologies. These molecules were strategically designed via semi-empirical calculations (B3LYP/6-31G*) to match their energetic levels (LUMO and HOMO) with those of nickel bisdithiolene molecules for an optimised charge transfer. Their syntheses have been described, and their properties have been fully investigated by using different techniques such as UV-visible spectroscopy, photoluminescence, nuclear magnetic resonance (NMR), mass spectroscopy (MS), electrochemistry, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The synthesised molecules have been used in organic solar cells prototypes. Promising results have been obtained, in particular for SilOCAO as the electron-donor associated with fullerene derivatives as the acceptors in bulk heterojunction." Document : Thèse de Doctorat Etablissement_delivrance : Université de Toulouse 3 Date_soutenance : 16/07/2015 Ecole_doctorale : Science de la matière (université Toulouse III P. Sabatier) Domaine : Chimie moléculaire Localisation : LCC En ligne : http://thesesups.ups-tlse.fr/2862/

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