Improving efficiency and stability of perovskite solar cells with photocurable fluoropolymers

被引：772

作者：

Bella, Federico ^{[1
]}

Griffini, Gianmarco ^{[2
]}

Correa-Baena, Juan-Pablo ^{[3
]}

Saracco, Guido ^{[4
]}

Gratzel, Michael ^{[5
]}

Hagfeldt, Anders ^{[3
]}

Turri, Stefano ^{[2
]}

Gerbaldi, Claudio ^{[1
]}

机构：

[1] Politecn Torino, Grp Appl Mat & Electrochem GAME Lab, CHENERGY Grp, Dept Appl Sci & Technol DISAT, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[2] Politecn Milan, Dept Chem Mat & Chem Engn Giulio Natta, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

[3] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Lab Photomol Sci, Chemin Alambics,Stn 3, CH-1015 Lausanne, Switzerland

[4] Ist Italiano Tecnol, Ctr Sustainable Futures PoliTO, Corso Trento 21, I-10129 Turin, Italy

[5] Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, Inst Sci & Ingn Chim, Stn 3, CH-1015 Lausanne, Switzerland

来源：

SCIENCE | 2016年 / 354卷 / 6309期

基金：

瑞士国家科学基金会;

关键词：

DEGRADATION; PERFORMANCE; DURABILITY; POLYMERS;

D O I：

10.1126/science.aah4046

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：

Organometal halide perovskite solar cells have demonstrated high conversion efficiency but poor long-term stability against ultraviolet irradiation and water. We show that rapid light-induced free-radical polymerization at ambient temperature produces multifunctional fluorinated photopolymer coatings that confer luminescent and easy-cleaning features on the front side of the devices, while concurrently forming a strongly hydrophobic barrier toward environmental moisture on the back contact side. The luminescent photopolymers re-emit ultraviolet light in the visible range, boosting perovskite solar cells efficiency to nearly 19% under standard illumination. Coated devices reproducibly retain their full functional performance during prolonged operation, even after a series of severe aging tests carried out for more than 6 months.

引用

页码：203 / 206

页数：4

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