Home
Resources
Publications
Interface Passivation and Electron Transport Improvement of Polymer Solar Cells Through Embedding a Polyfluorene Layer

Interface Passivation and Electron Transport Improvement of Polymer Solar Cells Through Embedding a Polyfluorene Layer

Shujun Li, Zhiqi Li, Chunyu Liu, Xinyuan Zhang, Zhihui Zhang, Wenbin Guo, Liang Shen, Shengping Ruan, Liu Zhang

Phys Chem Chem Phys. 2017 Jun 14;19(23):15207-15214.

PMID: 28561846

Abstract:

In this contribution, a series of conducting polyfluorenes (PF) are introduced to improve interface adhesion and boost charge extraction of the TiO2 electron transport layer of inverted polymer solar cells (PSCs). After employing poly (9,9-dihexylfluorenyl-2,7-diyl) (PDF), poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(1,4-benzo-{2,1',3}-thiadiazole)] (PDFBT), and poly[(4-(5-(7-methyl-9,9-dioctyl-9H-fluoren-2-yl) thiophen-2-yl)-7-(5-methylthiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PFTBT) as capping layers, interfacial coherence improvement and energy loss decrease are both achieved, facilitating charge transfer from the active layer to the TiO2 layer. The optimized contact, enhanced electrical conductivity, and reduced internal resistance contribute to increased short-circuit current density and fill factor, leading to an enhanced power conversion efficiency (PCE) from 5.72% up to 7.97%. The employment of the PF capping TiO2 buffer layer provides a promising approach to develop high efficiency PSCs.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP278176173	Poly(9,9-dioctylfluorenyl-2,7-yleneethynylene)		278176-17-3	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: