Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Self-assembled monolayer (SAM) contacts have revolutionized interfacial engineering in inverted perovskite solar cells (PSCs). Yet polymeric SAMs remain largely constrained by established small-molecule scaffolds, limiting architectural versatility and demanding elaborate precursor synthesis.
Here, we use Buchwald–Hartwig C–N coupling, integrating phosphonic-acid-functionalized aniline units with tunable conjugated arylene spacers into triarylamine architectures with a characteristic adsorption geometry. Tuning the conjugated arylene spacer length offers a route to balancing electrode work-function modulation, efficient charge transport, and compatibility with subsequent perovskite deposition. In the optimized polymer, FrP, fluorene-induced conformational locking promotes arylene coplanarity and compact interfacial packing, yielding uniform, wettable SAM films that facilitate high-quality perovskite growth.
The optimized polymer, FrP enables a champion power conversion efficiency (PCE) of 27.34%, alongside an estimated reduction in synthesis cost exceeding 60% relative to a benchmark polymeric SAM, poly-4PACz [1]. Our findings establish a versatile synthetic strategy that integrates molecular architecture, interfacial energetics, and synthetic economy.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
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