Benzoporphyrins: Selective Co‐sensitization in Dye‐Sensitized Solar Cells

Abstract

A novel class of dyes, namely benzoporphyrins, was synthesized and implemented into dye-sensitized solar cells. They feature complementary absorptions compared to N719, which renders them promising candidates for co-sensitization in DSSCs. Notably, metallated benzoporphyrins reveal a TiO2 -nanoparticle attachment that is size and aggregation dependent. Therefore, unproductive energy-transfer events between the selectively attached dyes can be prevented. In light of the latter, an efficiency improvement of 39 % has been achieved upon selective adsorption of benzoporphyrins and N719 onto different layers of TiO2 photoelectrode.

A Comprehensive Study on Tetraaryltetrabenzoporphyrins

“…However,within the last three decades, better synthetic routes,m ainly based on maskedi soindoles, were developed. [10] Sincet hen, prospective applications in organic near infrared light-emitting devices, [11][12][13][14][15][16] in organic photovoltaics, [17][18][19][20][21][22][23] or as oxygen sensors, [24,25] have been published. Benefiting from the stronga bsorption characteristics in the red and NIR region,T ATBPs showed good performancei np hoton upconversion (sTTA-UC) processes, [26][27][28][29] were investigated as sensitizers for the therapeuticc arbon monoxide release [30] and studied on variousm etal surfaces, [31][32][33] showing peculiar selfassembling behavior,w hich could find potentiala pplicationsi n organic electronics or catalysis.D espite these promisingr esults, the research aroundT ATBPs is still in its infancy and lacks in structurald iversity.T od ate, the focus was set to al arge portion on commond erivatives, fore xample phenyl-substituted TBPs, [11,14,27,30,34] whichn eglects the steric ande lectronic finetuningp roperties of the aryl moieties.…”

Molecular Engineering of Iridium Blue Emitters Using Aryl N‐Heterocyclic Carbene Ligands

“…He has reported in Chemistry-A European Journal on the incorporation of benzoporphyrins in dyesensitized solar cells. [8] Costa also recently received the silver medal in the European Young Chemist Award 2016.…”

Preise der Real Sociedad Española de Química für 2016

“…Er befasst sich mit der Entwicklung von nachhaltigen elektrolumineszierenden Materialien der dritten Generation für auf Ionen basierende Leuchtsysteme, der Anwendung von nanokohlenstoffbasierten Hybriden in Solarzellen und Leuchtsystemen sowie der Entwicklung bioinspirierter Komponenten für die Lichterzeugung, Energiekonversion und Diagnostik. Er hat in Chemistry—A European Journal den Einbau von Benzoporphyrinen in farbstoffsensibilisierte Solarzellen beschrieben . Costa hat kürzlich auch die Silbermedaille des European Young Chemist Award 2016 erhalten.…”