The effect of naphthalimide as auxiliary acceptor in the PTz-based dyes for dye-sensitised solar cell (DSSC) application is reported. In this regard, two new organic dyes with N-alkylated phenothiazine (PTz) core were synthesized by substitution of naphthalimide at C-3 of the PTz via triple bond and incorporation of an electron acceptor at C-7 position. Photophysical and electrochemical studies were carried out to assess the performance of the dyes on spectral coverage and to determine the redox energy levels, respectively. Charge distribution and electron transfer process of the optimized dyes were rationalised via theoretical studies. DSSCs fabricated with these dyes showed an optimal efficiency of 4.9 % for a device fabricated with iodide/triiodide electrolyte.

据报道，萘二甲酰亚胺作为辅助受体在基于染料敏化太阳能电池（DSSC）的PTz基染料中的作用。在这方面，通过三键结合取代PTz的C-3处的萘二甲酰亚胺并在C-7位引入电子受体，合成了两种具有N-烷基化吩噻嗪（PTz）核的新型有机染料。进行了光物理和电化学研究，以评估染料在光谱范围内的性能并确定氧化还原能级。通过理论研究，优化了染料的电荷分布和电子转移过程。用这些染料制造的DSSC对使用碘化物/三碘化物电解质制造的设备显示出4.9％的最佳效率。