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An investigation into the origin of variations in photovoltaic performance using D–D–π–A and D–A–π–A triphenylimidazole dyes with a copper electrolyte
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2021-07-13 , DOI: 10.1039/d1me00073j Palivela Siva Gangadhar 1, 2 , Anooja Jagadeesh 2, 3 , Andrew Simon George 2, 3 , Govind Reddy 1 , Seelam Prasanthkumar 1, 2 , Suraj Soman 2, 3 , Lingamallu Giribabu 1, 2
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2021-07-13 , DOI: 10.1039/d1me00073j Palivela Siva Gangadhar 1, 2 , Anooja Jagadeesh 2, 3 , Andrew Simon George 2, 3 , Govind Reddy 1 , Seelam Prasanthkumar 1, 2 , Suraj Soman 2, 3 , Lingamallu Giribabu 1, 2
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The potential of using non-planar triphenylimidazole-donor-based dyes in dye-sensitized solar cells was explored via synthesizing two novel dyes, LG-P1 and LG-P3, with D–D–π–A and D–A–π–A architectures, respectively. Anthracene and benzothiadiazole were used as the auxiliary donor and auxiliary acceptor units, respectively, in these newly designed sensitizers. The dyes were custom-designed to have a more positive ground state potential to make them compatible with a new-generation alternative copper electrolyte, [Cu(dmp)2]1+/2+. We investigated various factors contributing to the variations in the photovoltaic performance upon the use of triphenylimidazole dyes with different auxiliary donor and acceptor units with [Cu(dmp)2]1+/2+ electrolyte. Based on our observations, the triphenylimidazole dye having D–A–π–A architecture with benzothiadiazole as the auxiliary acceptor unit delivered better photovoltaic performance than the dye with anthracene as an auxiliary donor with D–D–π–A architecture. Electrical and optical perturbation methods were used to systematically probe the charge transfer and transport behaviours at the interfaces when employing these sensitizers.
中文翻译：
使用 D-D-π-A 和 D-A-π-A 三苯基咪唑染料与铜电解质研究光伏性能变化的起源
通过合成两种新型染料LG-P1和LG-P3以及 D-D-π-A 和 D-A-π- ，探索了在染料敏化太阳能电池中使用非平面三苯基咪唑供体染料的潜力A 架构，分别。在这些新设计的敏化剂中，蒽和苯并噻二唑分别用作辅助供体和辅助受体单元。这些染料是定制设计的，具有更正的基态电位，使它们与新一代替代铜电解质 [Cu(dmp) 2 ] 1+/2+兼容. 我们研究了在使用具有不同辅助供体和受体单元的三苯基咪唑染料和 [Cu(dmp) 2 ] 1+/2+电解质时导致光伏性能变化的各种因素。根据我们的观察，具有苯并噻二唑作为辅助受体单元的 D-A-π-A 结构的三苯基咪唑染料比具有 D-D-π-A 结构的具有蒽作为辅助供体的染料具有更好的光伏性能。当使用这些敏化剂时，使用电和光扰动方法系统地探测界面处的电荷转移和传输行为。
更新日期：2021-07-27
中文翻译：
使用 D-D-π-A 和 D-A-π-A 三苯基咪唑染料与铜电解质研究光伏性能变化的起源
通过合成两种新型染料LG-P1和LG-P3以及 D-D-π-A 和 D-A-π- ，探索了在染料敏化太阳能电池中使用非平面三苯基咪唑供体染料的潜力A 架构，分别。在这些新设计的敏化剂中，蒽和苯并噻二唑分别用作辅助供体和辅助受体单元。这些染料是定制设计的，具有更正的基态电位，使它们与新一代替代铜电解质 [Cu(dmp) 2 ] 1+/2+兼容. 我们研究了在使用具有不同辅助供体和受体单元的三苯基咪唑染料和 [Cu(dmp) 2 ] 1+/2+电解质时导致光伏性能变化的各种因素。根据我们的观察，具有苯并噻二唑作为辅助受体单元的 D-A-π-A 结构的三苯基咪唑染料比具有 D-D-π-A 结构的具有蒽作为辅助供体的染料具有更好的光伏性能。当使用这些敏化剂时，使用电和光扰动方法系统地探测界面处的电荷转移和传输行为。
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