DataVXACS Applied Energy MaterialsPaper
journal article·2023-04-24

Densely Packed D−π–A Photosensitizers on TiO2 Enable Efficient Dye-Sensitized Solar Cells

Li Zhang, Junjie Zhang, Xu Tang, Yong Chen, Xinting Wang, Zijian Deng, Changchun Wang, Xichuan Yang, Bin Sun

ACS Applied Energy Materials· Volume 6· Issue 8
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Source abstract

Abstract

Rigid and coplanar molecular structures are important for photosensitizers, but their packing status on the surface of nanocrystalline mesoporous titanium dioxide (TiO 2 ) films requires more attention. Here, we designed three indolo[3,2- b ]carbazole-based organic dyes ZL002, ZL004, and ZL006 with a coplanar structure by introducing flexible Z-type double and triple bonds having a smaller stereo-effect, and a rigid backbone from a benzene ring connected by a single bone. We studied the properties of photoelectricity, electron injection, and charge transport based on the ZL dyes adsorbed on the surface of TiO 2, and their dye-sensitized solar cell performance. We found that rigid single bonds and triple bonds widen absorption and preserve the vertical coplanar status of the dyes on TiO 2 . The coplanar and rigid dye ZL004 densely packed on the surface of TiO 2 gives smaller relaxation loss, higher electron-injection efficiency, and longer charge-recombination lifetime. As a result, the best efficiency of 11.6% based on dye ZL004 is achieved from their densely packed structure on the surface of TiO 2 .
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), School of Material Science and Engineering, Nanjing University of Posts and Telecommunications (NJUPT), 9 Wenyuan Road, Nanjing 210023, China

Institute of Artificial Photosynthesis, State Key Laboratory of Fine Chemicals, DUT−KTH Joint Education and Research Centre on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Road, Dalian 116024, China

School of Material Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China

Funding

China Postdoctoral Science Foundation · Central University Basic Research Fund of China · Government of Jiangsu Province · Nanjing University of Posts and Telecommunications · National Natural Science Foundation of China · Jiangsu Funding Program for Excellent Postdoctoral Talent

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