چكيده فارسي :
In recent years, energy demands and universal warming havearoused intense attention in clean and renewable solar energy sources.In this context, dye-sensitized solar cells have attractedconsiderable attention as they offer the possibility of low-costconversion of photovoltaic energy. The search for novel dyesin the con text of dye-sensitized solar cells has gainedmuchimpetus since the first reportin1991 by O‘Regan.[1] Thereare twokindsof dyes,metal-complexandmetal-free types.Importantmetal- complexdyesareruthenium complexes.2Although the conventionalruthenium-based sensitizers hold the record of the solar-energy-to-electricity conversionefficiencies of 11%, they are expensive andhard to purify relative to metal-free organic sensitizers. In view of the limite davailability an denvironmentalissues associatedwithrutheniumdyes,metal-freedyesareconsideredto be analternativeforuseindye-sensitized solar cellsbecausetheyhavehighmolar absorptioncoefficients andcanbepreparedmoreeasily and economically. Thus, organicsensitizers have emerged as competitive alternatives to theRu-based counterparts because various organic chromophoreswith high molar extinction coefficients can be facilely synthesized. Thus, considerable progress has been made on the design oforganic dyes, which favor high performance in dye sensitized solar cells. Herein, we synthesized a new organic dye employing diphenyl amine following by alkylation, vilsmeierformylationand wittig reaction which was used as sensitizers in dye-sensitized solar cells. Figure 1 shows the synthesis of this new organic dye.
