journal article·2015-02

Integrated Design of Organic Hole Transport Materials for Efficient Solid‐State Dye‐Sensitized Solar Cells

Bo Xu, Haining Tian, Lili Lin, Deping Qian, Hong Chen, Jinbao Zhang, Nick Vlachopoulos, Gerrit Boschloo, Yi Luo, Fengling Zhang, Anders Hagfeldt, Licheng Sun

Advanced Energy Materials· Volume 5· Issue 3
Publisher page

Abstract

A series of triphenylamine‐based small molecule organic hole transport materials (HTMs) with low crystallinity and high hole mobility are systematically investigated in solid‐state dye‐sensitized solar cells (ssDSCs). By using the organic dye LEG4 as a photosensitizer, devices with X3 and X35 as the HTMs exhibit desirable power conversion efficiencies (PCEs) of 5.8% and 5.5%, respectively. These values are slightly higher than the PCE of 5.4% obtained by using the state‐of‐the‐art HTM Spiro‐OMeTAD. Meanwhile, transient photovoltage decay measurement is used to gain insight into the complex influences of the HTMs on the performance of devices. The results demonstrate that smaller HTMs induce faster electron recombination in the devices and suggest that the size of a HTM plays a crucial role in device performance, which is reported for the first time.
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Research context

OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Perovskite Materials and Applications · Quantum Dots Synthesis And Properties

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

Affiliations

Organic Chemistry Center of Molecular Devices Department of Chemistry School of Chemical Science and Engineering KTH Royal Institute of Technology 10044 Stockholm Sweden

Biomolecular and Organic Electronics Department of Physics Chemistry and Biology Linköping University 581 83 Linköping Sweden

College of Physics and Electronics Shandong Normal University 250014 Jinan China

Department of Theoretical Chemistry & Biology School of Biotechnology KTH Royal Institute of Technology 106 91 Stockholm Sweden

Berzelii Center EXSELENT on Porous Materials and Department of Materials and Environmental Chemistry Stockholm University 106 91 Stockholm Sweden

Department of Chemistry‐Ångström Laboratory Physical Chemistry Uppsala University Box 523 751 20 Uppsala Sweden

State Key Laboratory of Fine Chemicals DUT‐KTH Joint Research Center on Molecular Devices Dalian University of Technology (DUT) 116024 Dalian China

Funding

Swedish Research Council · Swedish Energy Agency · Knut and Alice Wallenberg Foundation · National Natural Science Foundation of China · National Basic Research Program of China · China Scholarship Council (CSC)

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