Efficient carbazole-based small-molecule organic solar cells with an improved fill factor
Related Experiment Video
Updated: Sep 23, 2025
In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation
Published on: March 2, 2021
Yongtao Liu1, Yanna Sun1, Miaomiao Li1
1State Key Laboratory and Institute of Elemento-Organic Chemistry, The Centre of Nanoscale Science and Technology, Key Laboratory of Functional Polymer Materials, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), College of Chemistry, Nankai University Tianjin 300071 China htzhang@nankai.edu.cn yschen99@nankai.edu.cn.
Abstract:
In this study, a new acceptor-donor-acceptor (A-D-A) small molecule, DI3TCz, with carbazole as the central unit and 1,3-indanedione as the end group, was designed and synthesized for application in organic solar cells. In contrast to the molecule DR3TCz with rhodanine as end groups, DI3TCz exhibited deep a LUMO energy level and a nearly unchanged HOMO energy level with a narrow optical band gap of 1.75 eV and red shifted absorption. Compared with DR3TCz, the DI3TCz device showed a PCE of 6.46% with a remaining high V oc value of 0.97 V, improved J sc of 10.40 mA cm-1 and a notable FF of 0.65, which is the highest PCE value reported to data for carbazole-based small molecules OPVs.
More Related Videos
08:29Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
07:32Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization
Published on: January 29, 2017