Impact of the Electron-Transport Layer on the Performance of Solution-Processed Small-Molecule Organic Solar Cells

被引：42

作者：

Long, Guankui ^{[1
]}

Wan, Xiangjian ^{[1
]}

Kan, Bin ^{[1
]}

Hu, Zhicheng ^{[2
]}

Yang, Xuan ^{[1
]}

Zhang, Yi ^{[1
]}

Zhang, Mingtao ^{[3
]}

Wu, Hongbing ^{[2
]}

Huang, Fei ^{[2
]}

Su, Shijian ^{[2
]}

Cao, Yong ^{[2
]}

Chen, Yongsheng ^{[1
]}

机构：

[1] Nankai Univ, Key Lab Funct Polymer Mat, Collaborat Innovat Ctr Chem Sci & Engn, Ctr Nanoscale Sci & Technol,Inst Polymer Chem,Col, Tianjin 300071, Peoples R China

[2] S China Univ Technol, Dept Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[3] Nankai Univ, Coll Chem, Tianjin 300071, Peoples R China

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 08期

关键词：

DFT calculations; electron transport; lithium fluoride; photochemistry; zinc oxide; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYELECTROLYTE; PHOTOVOLTAIC CELLS; BENZODITHIOPHENE UNIT; OPTICAL SPACER; FILL FACTORS; POLYMER; EFFICIENCY; RECOMBINATION; INTERLAYER;

D O I：

10.1002/cssc.201402171

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Although the performance of polymer solar cells has been improved significantly recently through careful optimization with different interlayers for the same materials, more improvement is needed in this respect for small-molecule-based solar cells, particularly for the electron-transport layers (ETLs). In this work, three different solution-processed ETLs, PFN, ZnO nanoparticles, and LiF, were investigated and compared in the performance of small-molecule-based devices, and power conver-sion efficiencies (PCEs) of 8.32, 7.30, and 7.38% were achieved, respectively. The mechanism for the ETL-induced enhancement has been studied, and different ETLs have a significantly different impact on the device performance. The clearly improved performance of PFN is attributed to the combination of reduced bimolecular recombination and increased effective photon absorption in the active layer.

引用

页码：2358 / 2364

页数：7

共 72 条

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