IDEA #8ITCQN Arginine for Robust Supramolecular Assembly. 25A0020

Solar Cells. The low efficiency of solar cells restricts their widespread adoption in the energy production sector. This inefficiency limits the energy output from solar resources, reducing the viability and appeal of solar technology for large-scale energy generation projects. The power conversion efficiency of dye-synthesized solar cells is to around 14% [Zhang et al. 2023], where the conversion efficiency of the organic solar cells has been reached nearly 20% using the slipstacked molecular packing effect of non-fullerene electron acceptors [Liu et al. 2020, Karki et al. 2021]. As similar with non-fullerene electron acceptors, the orientation and aggregation of the dye molecules also have a potential impact to generate more free charge carriers and facilitate charge transport, which resulted with a higher efficiency [Kim et al 2022]. Frenkel exciton nanoassemblies, J-aggregates, is one of a crucial dye group presenting a high potential to increase the efficiency of solar cells with their head-to-tail or slip-stacked packing arrangements [Kim et al 2022]. However, it is challenging to both control hierarchical self-assembly and obtain robust materials in these arrangements for use in device integration. By effectively controlling the hierarchical self-assembly process and utilizing robust Frenkel exciton materials derived from arginine, which allows for tuning various properties such as light absorption, energy transfer efficiency, exciton diffusion length and charge carrier mobility all of which are critical for optimizing the efficiency of solar cells. High-speed light emitting devices. Short radiative lifetime is a requirement to develop highspeed light emitting devices. Achieving and maintaining a short radiative lifetime needed advanced material engineering and precise control of the material properties. The lifetime of inorganic materials can be reduced only to a few nanoseconds through very complex synthesis methods [Zhao et al. 2020]. In contrast, Frenkel excitonic materials, also known as J-aggregates or Scheibe aggregates, exhibit lifetimes on the picosecond scale [Zhao et al. 2020]. Arginine significantly affects the reduction of the radiative lifetime of Frenkel excitonic nanotubes, highlighting the potential of these materials for efficient energy transfer in optoelectronics, optical communications, and display technologies etc.