Molecular design of the diketopyrrolopyrrole-based dyes with varied donor units for efficient dye-sensitized solar cells
Molecular design of the diketopyrrolopyrrole-based dyes with varied donor units for efficient dye-sensitized solar cells
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用于高效染料敏化太阳能电池的具有不同供体单元的二酮吡咯并吡咯基染料的分子设计
DOI：
10.1016/j.jpowsour.2014.08.030
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发表时间：
2014-12
影响因子：
9.2
通讯作者：
Cao, Derong
中科院分区：
文献类型：
--
作者：
Iqbal, Zafar;Wang, Lingyun;Meier, Herbert;Cao, Derong
三种新型二酮基吡咯并吡咯类有机染料设计并合成了以苯基为π桥、三苯胺或吩噻嗪为给体的（1-3型）染料敏化太阳能电池（DSSC），其中1型染料将给体链段直接引入到二酮基吡咯并吡咯核中，使给体和受体之间的电子传递更好，在给体和二酮基吡咯并吡咯单元之间具有苯基单元的2型和3型染料显示出较低的激发态离域。与3型染料相比，1型染料具有更高的共轭骨架共平面性和更短的电子从给体到TiO 2的转移距离，分别导致了吸收峰的红移和电子注入的增强。此外，以三苯胺为给体的染料比以吩噻嗪为给体的染料具有更好的紫外性能和更低的聚集趋势。以鹅去氧胆酸为共吸附剂，对1型染料与三苯胺的染料敏化太阳能电池进行了研究，获得了8%的能量转换效率。结果表明，染料的给电子体、苯基单元的位置和数目对其DSSC的光伏性能有显著影响。
Three types of novel diketopyrrolopyrrole-based organic dyes (Type 1–3) with phenyl unit as an additionalπ-bridge and triphenylamine or phenothiazine as the donors are designed and synthesized for dye-sensitized solar cells (DSSCs).Type 1dyes incorporating the donor segment directly to the diketopyrrolopyrrole core lead to a better electron communication between the donor and acceptor, allowing an efficient charge transfer process.Type 2andType 3dyes with a phenyl unit between the donor and diketopyrrolopyrrole unit show lower delocalization of the excited state. Compared withType 3dyes,Type 1dyes exhibit higher conjugated skeleton co planarity and shorter electron transfer distance from the donor to TiO2, resulting in the red-shifts of absorption and promotion of electron injection, respectively. Moreover, the dyes with triphenylamine as the donor display better UV performance and lower trend of aggregation than the dyes with phenothiazine as the donor. Finally, a power conversion efficiency of 8% with chenodeoxycholic acid as the co-absorbant for the DSSC based onType 1dyes with triphenylamine is achieved. The results reveal that the donors, the position and number of phenyl unit of the dyes significantly influence the photovoltaic performance of their DSSCs.
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含有呋喃部分的新型二酮吡咯并吡咯（DPP）敏化剂，用于高效稳定的染料敏化太阳能电池
影响因子：
4.5
作者：
Wu, Wenjun;Kong, Cong;Long, Yitao;Hua, Jianli
通讯作者：
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DOI：
10.1002/chin.201326243
发表时间：
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期刊：
ChemInform
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影响因子：
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作者：
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影响因子：
9.5
作者：
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