DataVXACS Energy LettersPaper
journal article·2024-09-13

Binary Organic Solar Cells with >19.6% Efficiency: The Significance of Self-Assembled Monolayer Modification

Xiaokang Sun, Xiaoman Ding, Fei Wang, Jie Lv, Chuanlin Gao, Guangye Zhang, Xiaoping Ouyang, Gang Li, Hanlin Hu

ACS Energy Letters· Volume 9· Issue 9
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Source abstract

Abstract

Improving the uniformity and density of self-assembled monolayers (SAMs) is crucial to elevate the photovoltaic performance of organic solar cells (OSCs). Herein, we introduced the small molecules 1-hydroxybenzotriazole (HOBT) to modulate the distribution and electrical properties of (4-(7 H -dibenzo[ c, g ]carbazol-7-yl)butyl)phosphonic acid (4PADCB) on indium tin oxide (ITO) transparent electrodes in an innovative manner. The hydroxyl group of HOBT interacts with the phosphate group of SAMs, while the steric repulsion exerted by the HOBT backbone efficiently regulates the distribution of SAMs. This led to a more uniform and dense distribution of SAMs on ITO. Furthermore, HOBT-modified SAMs have improved the crystallization and vertical phase separation of the upper active layer. Consequently, the PM6:BTP-eC9 binary OSCs based on HOBT-modified SAMs exhibit an impressive PCE of 19.66%. Our work presents an effective strategy for regulating the SAM morphology and offers a promising approach for advancing OSCs.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Organic Electronics and Photovoltaics · Perovskite Materials and Applications · Molecular Junctions and Nanostructures

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

Affiliations

School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, People’s Republic of China

Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic University, 7098 Liuxian Boulevard, Shenzhen 518055, People’s Republic of China

College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, People’s Republic of China

Department of Electronic and Information Engineering, Research Institute for Smart Energy (RISE), The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, People’s Republic of China

Funding

Guangdong Provincial Introduction of Innovative Research and Development Team · Research Grants Council, University Grants Committee · Basic and Applied Basic Research Foundation of Guangdong Province · China Postdoctoral Science Foundation · Science, Technology and Innovation Commission of Shenzhen Municipality · Shenzhen Polytechnic · Hong Kong Polytechnic University · Spray-on Perovskite Photovoltaics Research and Development Center

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