Conjugating pillararene dye in dye-sensitized solar cells

被引：17

作者：

Liao, Chaoqiang ^{[1
]}

Zeng, Kaiwen ^{[2
,3
]}

Wu, Hanlun ^{[1
]}

Zeng, Qingliang ^{[1
]}

Tang, Hao ^{[1
]}

Wang, Lingyun ^{[1
]}

Meier, Herbert ^{[1
,4
]}

Xie, Yongshu ^{[2
,3
]}

Cao, Derong ^{[1
]}

机构：

[1] South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Peoples R China

[2] East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, 130 Meilong, Shanghai 200237, Peoples R China

[3] East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, 130 Meilong, Shanghai 200237, Peoples R China

[4] Johannes Gutenberg Univ Mainz, Inst Organ Chem, D-55099 Mainz, Germany

来源：

CELL REPORTS PHYSICAL SCIENCE | 2021年 / 2卷 / 02期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE; HOST; RECOMBINATION; EFFICIENCY; DONORS; ACID;

D O I：

10.1016/j.xcrp.2021.100326

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The improvement of open-circuit voltage (V-OC) is a crucial goal to develop efficient dye-sensitized solar cells (DSSCs). Here, conjugating pillar[5]arene dyes (PPI and PPII) are designed, synthesized, and applied in DSSCs. The presence of pillar[5]arene moiety in the dyes inhibits the dye aggregation and charge recombination in the DSSCs, leading to the enhancement of V-OC. PPI with a single D-pi-A backbone and a pillar[5]arene moiety achieves a V-OC of 715 mV, which is much higher than the reference dye (V-OC of 674 mV) with the same D-pi A backbone but no pillar[5]arene moiety. PPII with 2 D-pi-A backbones also achieves a V-OC of 746 mV and a much higher short-circuit photocurrent (J(SC)) than the reference dyes. In addition, the host-guest interaction can adjust the V-OC and J(SC) by coupling dye with the imidazolium in electrolyte, as confirmed by the electrolyte engineering.

引用

页数：15

共 52 条

[1] Di-branched di-anchoring organic dyes for dye-sensitized solar cells [J].