High performance all-small-molecule solar cells: Engineering the nanomorphology: Via processing additives

Min J, Kwon OK, Cui C, Park JH, Wu Y, Park SY, Li Y, Brabec C (2016)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Journal of Materials Chemistry A Royal Society of Chemistry

Book Volume: 4

Pages Range: 14234-14240

Journal Issue: 37

DOI: 10.1039/c6ta05303c

Abstract

The use of small volumes of solvent additives (SAs) or little amounts of non-volatile additives is a processing approach that has been implemented in many high/record performing bulk heterojunction (BHJ) organic solar cells (OSCs). Here, the effects of six SA systems and a molecular additive di-2-thienyl-2,1,3-benzothiadiazole (DTBT) were studied with respect to the photovoltaic parameters of solution-processed all small molecule solar cells (all-SMSCs) based on the BDTT-S-TR:NIDCS-MO system. An effective strategy with binary additives has been employed in this all-SM system, where a small amount, 0.75 vol% 1,8-diiodooctane (DIO) and 2 wt% DTBT were added to the casting solution. This efficient SA approach yielded the highest power conversion efficiency (PCE) of 5.33%. The relevant additives facilitate phase separation in the nm domains and improve bulk transport as evidenced by photoluminescence (PL), atomic force microscopy (AFM), X-ray diffraction (XRD) and space charge limited current (SCLC) measurements.

Authors with CRIS profile

Jie Min Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET) (i-MEET)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

Soochow University, Suzhou / 苏州大学 CN China (CN) Seoul National University (SNU) / 서울대학교 KR Korea, Republic of (KR)

How to cite

APA:

Min, J., Kwon, O.K., Cui, C., Park, J.-H., Wu, Y., Park, S.Y.,... Brabec, C. (2016). High performance all-small-molecule solar cells: Engineering the nanomorphology: Via processing additives. Journal of Materials Chemistry A, 4(37), 14234-14240. https://doi.org/10.1039/c6ta05303c

MLA:

Min, Jie, et al. "High performance all-small-molecule solar cells: Engineering the nanomorphology: Via processing additives." Journal of Materials Chemistry A 4.37 (2016): 14234-14240.

BibTeX: Download