11% efficiency solid-state dye-sensitized solar cells with copper(II/I) hole transport materials

被引：237

作者：

Cao, Yiming ^{[1
]}

Saygili, Yasemin ^{[2
]}

Ummadisingu, Amita ^{[1
]}

Teuscher, Joel ^{[3
]}

Luo, Jingshan ^{[1
]}

Pellet, Norman ^{[1
]}

Giordano, Fabrizio ^{[1
]}

Zakeeruddin, Shaik Mohammed ^{[1
]}

Moser, Jacques-E. ^{[3
]}

Freitag, Marina ^{[2
,4
]}

Hagfeldt, Anders ^{[2
]}

Graetzel, Michael ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

[2] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, CH-1015 Lausanne, Switzerland

[3] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Photochem Dynam Grp, CH-1015 Lausanne, Switzerland

[4] Uppsala Univ, Dept Chem, Angstrom Lab, S-75120 Uppsala, Sweden

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

基金：

瑞士国家科学基金会;

关键词：

DONOR-ACCEPTOR DYES; ELECTRON-TRANSFER; EXCITED-STATES; MOLECULAR-STRUCTURES; REDOX MEDIATORS; COMPLEXES; QUANTIFICATION;

D O I：

10.1038/ncomms15390

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Solid-state dye-sensitized solar cells currently suffer from issues such as inadequate nanopore filling, low conductivity and crystallization of hole-transport materials infiltrated in the mesoscopic TiO2 scaffolds, leading to low performances. Here we report a record 11% stable solid-state dye-sensitized solar cell under standard air mass 1.5 global using a hole-transport material composed of a blend of [Cu (4,4',6,6'-tetramethyl-2,2'-bipyridine) 2](bis(trifluoromethylsulfonyl) imide) 2 and [Cu (4,4',6,6'-tetramethyl-2,2'-bipyridine) 2](bis(trifluoromethylsulfonyl) imide). The amorphous Cu(II/I) conductors that conduct holes by rapid hopping infiltrated in a 6.5 mm-thick mesoscopic TiO2 scaffold are crucial for achieving such high efficiency. Using time-resolved laser photolysis, we determine the time constants for electron injection from the photoexcited sensitizers Y123 into the TiO2 and regeneration of the Y123 by Cu(I) to be 25 ps and 3.2 ms, respectively. Our work will foster the development of low-cost solid-state photovoltaic based on transition metal complexes as hole conductors.

引用

页数：8

共 39 条

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