A dual ternary system for highly efficient ITO-free inverted polymer solar cells

被引：22

作者：

Peng, Zuosheng ^{[1
]}

Xia, Yuxin ^{[1
,2
,3
]}

Gao, Feng ^{[2
,3
,4
]}

Xiong, Kang ^{[1
]}

Hu, Zhanhao ^{[4
]}

James, David Ian ^{[5
]}

Chen, Junwu ^{[4
]}

Wang, Ergang ^{[5
]}

Hou, Lintao ^{[1
]}

机构：

[1] Jinan Univ, Dept Phys, Siyun Lab, Guangzhou 510632, Guangdong, Peoples R China

[2] Linkoping Univ, Biomol & Organ Elect, IFM, SE-58183 Linkoping, Sweden

[3] Linkoping Univ, Ctr Organ Elect, SE-58183 Linkoping, Sweden

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

[5] Chalmers, Dept Chem & Chem Engn Polymer Technol, SE-41296 Gothenburg, Sweden

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 36期

基金：

瑞典研究理事会;

关键词：

OPEN-CIRCUIT VOLTAGE; POWER-CONVERSION EFFICIENCY; CHARGE-TRANSFER STATES; PHASE-SEPARATION; PERFORMANCE; MORPHOLOGY; BLENDS; ADDITIVES; ACCEPTOR; ORIGIN;

D O I：

10.1039/c5ta03831f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, it has been found that a very fine nanostructure can be realized by mixing 1-chloronaphthalene (CN) - a high-boiling solvent into a binary chlorobenzene (CB) : 1,8-diiodooctane (DIO) solvent mixture to form a ternary solvent system. An improvement in energy level alignment is also obtained by doping ICBA into a binary PTB7 : PCBM[70] blend, whereby the ternary solute system provides a new pathway for charge transfer from PTB7 to the PCBM[ 70] : ICBA alloy. This is confirmed by imaging the surface morphology of the active layer using AFM and TEM, monitoring the transient film formation process and measuring the charge transfer states with Fourier transform photocurrent spectroscopy. An encouraging PCE of 7.65% is achieved from the dual ternary system, which is the highest value ever reported for an ITO-free inverted polymer solar cell with a PEDOT:PSS layer as the top semitransparent electrode - a system which is compatible with low-cost large-area roll-to-roll manufacturing.

引用

页码：18365 / 18371

页数：7

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