Phenothiazine dye featuring encapsulated insulated molecular wire as auxiliary donor for high photovoltage of dye-sensitized solar cells by suppression of aggregation
Phenothiazine dye featuring encapsulated insulated molecular wire as auxiliary donor for high photovoltage of dye-sensitized solar cells by suppression of aggregation
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吩噻嗪染料采用封装绝缘分子线作为辅助供体，通过抑制聚集来实现染料敏化太阳能电池的高光电压
DOI：
10.1016/j.electacta.2019.02.013
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发表时间：
2019-04-10
影响因子：
6.6
通讯作者：
Cao, Derong
中科院分区：
文献类型：
--
作者：
Hua, Tao;Huang, Zu-Sheng;Cao, Derong
采用两种新型的D-D-pi-A吩噻嗪类有机染料（PH 2和PH 3），以封装绝缘分子线（EIMW）为辅助给体，制备了两种高效的染料敏化太阳能电池。与不含EIMW的参比染料PH 1相比，以EIMW为辅助供体的PH 2敏化的电池显示出更高的光电压（V-oc），这是因为前者能有效地抑制染料聚集并抑制电荷复合。结果表明，PH 2敏化的鹅去氧胆酸共吸附电池获得了较高的能量转换效率，甚至高于基于N719的电池。因此，通过将EIMW引入到有机染料中，由于有效抑制染料聚集和电荷复合，已经开发了提高DSSC的光电压和效率的有效方法。(C)2019爱思唯尔有限公司版权所有。
Two efficient dye-sensitized solar cells have been fabricated by two novel D-D-pi-A phenothiazine-based organic dyes (PH2 and PH3) with an encapsulated insulated molecular wire (EIMW) as an auxiliary donor. The cell sensitized by PH2 with EIMW as an auxiliary donor shows a much higher photovoltage (V-oc) relative to the reference dye PH1 without EIMW, because the former dye can inhibit dye aggregation and suppress the charge recombination effectively. The results show that the cell sensitized by PH2 with co-adsorption of chenodeoxycholic acid obtains a high power conversion efficiency, even higher than that of the cell based on N719. Thus, an effective way to increase the photovoltage and efficiency of the DSSCs has been developed by introducing the EIMW into the organic dyes due to the effective inhibition of dye aggregation and charge recombination. (C) 2019 Elsevier Ltd. All rights reserved.