Issue 85, 2015
From the journal:

RSC Advances

Rational selection of solvents and fine tuning of morphologies toward highly efficient polymer solar cells fabricated using green solvents†

Delong Liu,a   Zaiyu Wang,b   Shaoqing Zhang,a   Zhong Zheng,a   Bei Yang,a   Wei Ma*b  and  Jianhui Hou*a  

* Corresponding authors

a Laboratory of Polymer Physics and Chemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
E-mail: hjhzlz@iccas.ac.cn

b State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China 710049
E-mail: msewma@mail.xjtu.edu.cn

Abstract

High-efficiency polymer solar cells (PSCs) based on a conjugated polymer named PBQ-4 were fabricated by employing 1,2-dichlorobenzene (o-DCB), o-xylene and anisole as primary solvents. We rationally selected three solvent additives, 1,8-diiodooctane (DIO), N-methylpyrrolidone (NMP) and diphenyl ether (DPE) to tune the morphologies of the blend films. The power conversion efficiency (PCE) of 8.47% and 7.62% were realized by using o-DCB/DIO and o-xylene/NMP as processing solvent, respectively. The PSC with a PCE of 8.37% was fabricated using the environmentally friendly solvents of anisole/DPE. To the best of our knowledge, the PCE of 8.37% is not only among the highest values reported for PSCs with Eg > 1.7 eV but also the highest value for a PSC processed using a biodegradable solvents with low toxicity. Therefore, these results open the new paths for the fabrication of highly efficient PSCs by green processes.

Graphical abstract: Rational selection of solvents and fine tuning of morphologies toward highly efficient polymer solar cells fabricated using green solvents

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Article information

DOI
https://doi.org/10.1039/C5RA14013G
Article type
Paper
Submitted
16 Jul 2015
Accepted
08 Aug 2015
First published
10 Aug 2015

RSC Adv., 2015,5, 69567-69572

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Rational selection of solvents and fine tuning of morphologies toward highly efficient polymer solar cells fabricated using green solvents

D. Liu, Z. Wang, S. Zhang, Z. Zheng, B. Yang, W. Ma and J. Hou, RSC Adv., 2015, 5, 69567 DOI: 10.1039/C5RA14013G

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