T-shaped (D)(2)-A-pi-A type sensitizers incorporating indoloquinoxaline and triphenylamine for organic dye-sensitized solar cells
T-shaped (D)(2)-A-pi-A type sensitizers incorporating indoloquinoxaline and triphenylamine for organic dye-sensitized solar cells
复制标题
用于有机染料敏化太阳能电池的包含吲哚喹喔啉和三苯胺的T形(D)(2)-A-pi-A型敏化剂
DOI：
10.1016/j.electacta.2017.02.166
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发表时间：
2017
影响因子：
6.6
通讯作者：
Hou Linxi
中科院分区：
文献类型：
--
作者：
Qian Xing;Lan Xiaolin;Yan Rucai;He Yiming;Huang Jiazheng;Hou Linxi
设计并合成了四种新型T型无金属有机敏化剂QX22-25，它们分别以三苯胺和吲哚喹恶啉为基团，形成(D)2-A-π-A型结构。这些染料增敏剂有两个三苯胺供体连接在基于吲哚喹恶啉的从属受体上。不同的π桥(噻吩基和呋喃)和受体/锚定基团(氰基丙烯酸和2-(1，1-二氰亚甲基)罗丹宁)参与了光电性能的调节。系统地研究了它们的光学、电化学性质、光伏性能以及密度泛函理论计算，结果表明这四种染料都可以作为光敏剂。含有呋喃−桥和氰基丙烯酸受体/锚基的染料QX23的功率转换效率最高可达7.09%，Jsc值为12.9 mA/cmπ2，平均电压值为817 mV，表明将吲哚喹恶啉和三苯胺结合起来构建高效的(D)2-A-π-A型敏化剂是一种很有前途的策略。
Four novel T-shaped metal-free organic sensitizersQX22–25based on triphenylamine and indoloquinoxaline have been successfully designed and synthesized as a (D)2–A–π–A type structure. These dye sensitizers have two triphenylamine donors attaching on an indoloquinoxaline-based subordinate acceptor. Different π-bridges (thiophene and furan) and acceptor/anchoring groups (cyanoacrylic acid and 2-(1,1-dicyanomethylene)rhodanine) were involved to tune the photoelectrical properties. Their optical, electrochemical, and photovoltaic properties as well as the DFT calculations have been systematically investigated, indicating these four dyes are all capable as photosensitizers. A highest power conversion efficiency up to 7.09% with aJscof 12.9 mA cm−2and aVocof 817 mV has been achieved by the dyeQX23with a furan π-bridge and a cyanoacrylic acid acceptor/anchoring group, indicating it is a promising strategy to construct efficient (D)2–A–π–A type sensitizers by incorporating indoloquinoxaline and triphenylamine.