Issue 41, 2015
From the journal:

RSC Advances

Star-shaped carbazole-based BODIPY derivatives with improved hole transportation and near-infrared absorption for small-molecule organic solar cells with high open-circuit voltages†

Xinfu Zhang,‡a   Youdi Zhang,‡a   Lingcheng Chen*a  and  Yi Xiao*a  

* Corresponding authors

a State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
E-mail: lcchen@dlut.edu.cn, xiaoyi@dlut.edu.cn

Abstract

A series of tunable absorbing star-shaped BODIPY derivatives containing a different number of carbazole units were designed and synthesized. With the extended conjugated skeleton, their absorption spectra become progressively bathochromic shifted from the red region to the near-infrared region. The compound TAC with four carbazole units exhibits a strong near-infrared absorption up to 850 nm with a high extinction coefficient over 135 000 M−1 cm−1 and considerable intrinsic hole mobility of 4.82 × 10−5 cm2 V−1 s−1 in SCLC devices. The near-infrared organic solar cells (OSCs) based on TAC exhibit a potential power conversion efficiency of 2.70% and a high open-circuit voltage of 0.85 V.

Graphical abstract: Star-shaped carbazole-based BODIPY derivatives with improved hole transportation and near-infrared absorption for small-molecule organic solar cells with high open-circuit voltages

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Article information

DOI
https://doi.org/10.1039/C5RA02414E
Article type
Paper
Submitted
07 Feb 2015
Accepted
30 Mar 2015
First published
31 Mar 2015

RSC Adv., 2015,5, 32283-32289

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Star-shaped carbazole-based BODIPY derivatives with improved hole transportation and near-infrared absorption for small-molecule organic solar cells with high open-circuit voltages

X. Zhang, Y. Zhang, L. Chen and Y. Xiao, RSC Adv., 2015, 5, 32283 DOI: 10.1039/C5RA02414E

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