Issue 59, 2015

Tri(N-carbazolyl)triphenylamine-based starburst organic dyes: effects of different acceptors on the optical, electrochemical and photovoltaic properties

Abstract

Two novel tri(N-carbazolyl)triphenylamine-based organic dyes were designed, synthesized and applied as photosensitizers for dye-sensitized solar cells. The superiority of the starburst structure of these dyes is suppressing the intermolecular interactions and guaranteeing a fast electron injection into the TiO2 semiconductor. Cyanoacrylic acid and rhodanine-3-acetic acid were separately used as electron acceptors/anchoring groups to compose the photosensitizers. Different acceptors led to striking changes in the photophysical, electrochemical and photovoltaic properties. An overall power conversion efficiency of 6.53% with a short-circuit photocurrent density of 13.4 mA cm−2, an open-circuit photovoltage of 735 mV and a fill factor of 0.66 was achieved by the dye with tri(N-carbazolyl)triphenylamine as the donor and cyanoacrylic acid as the acceptor under AM 1.5 illumination (100 mW cm−2).

Graphical abstract: Tri(N-carbazolyl)triphenylamine-based starburst organic dyes: effects of different acceptors on the optical, electrochemical and photovoltaic properties

Article information

Article type
Paper
Submitted
11 Mar 2015
Accepted
21 May 2015
First published
21 May 2015

RSC Adv., 2015,5, 47422-47428

Tri(N-carbazolyl)triphenylamine-based starburst organic dyes: effects of different acceptors on the optical, electrochemical and photovoltaic properties

X. Qian, W. Chang, Y. Zhu, S. Wang, B. Pan, L. Lu and J. Zheng, RSC Adv., 2015, 5, 47422 DOI: 10.1039/C5RA04283F

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