Tailor-Made Hole-Conducting Coadsorbents for Highly Efficient Organic Dye-Sensitized Solar Cells
作者:In Taek Choi、Myung Jong Ju、Sang Hyun Song、Sang Gyun Kim、Dae Won Cho、Chan Im、Hwan Kyu Kim
DOI:10.1002/chem.201301658
日期:2013.11.11
(HC), acidic coadsorbents 4‐3,7‐bis[4‐(2‐ethylhexyloxy)phenyl]‐10H‐phenothiazin‐10‐yl}benzoic acid (PTZ1) and 4‐3,7‐bis[4‐(2‐ethylhexyloxy)phenyl]‐10H‐phenothiazin‐10‐yl}biphenyl‐4‐carboxylic acid (PTZ2) were developed. Owing to their tuned and negative‐shifted HOMO levels (vs. NHE), they were used as HC coadsorbents in dye‐sensitized solar cells (DSSCs) to improve cell performance through desired cascade‐type
Y型低分子量空穴导体(HC)酸性共吸附剂4- 3,7-双[4-(2-乙基己氧基)苯基] -10 H-吩噻嗪-10-基}苯甲酸(PTZ1)和4- 3,7-双[4-(2-乙基己氧基)苯基] -10 H-吩噻嗪-10-基}联苯-4-羧酸(PTZ2)开发。由于它们的HOMO含量经过调节和负移(相对于NHE),它们被用作染料敏化太阳能电池(DSSC)中的HC辅助吸附剂,以通过所需的级联型空穴传输过程改善电池性能。研究了它们在DSSC中作为HC辅助吸附剂的详细功能,以获得所需级联型空穴转移过程的证据。它们具有多种功能,例如防止染料分子π-π堆积,收集较短波长的光以及更快的染料再生。通过使用PTZ2作为有机染料NKX2677在TiO 2表面上量身定制的HC共吸附剂,在100 mW cm -2 AM 1.5G模拟光(短路电流)下可实现8.95%的极高转换效率。J SC = 16.56 mA cm -2,开路电压V