Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.170
Publication date: 7th February 2022
With the extremely fast growth of electronics and optoelectronics market for devices with a transparency window in the visible range, the need for proper electrodes and the related raw materials has increased exponentially1. State of the art devices for photovoltaics, lighting and energy-related applications make use, in many cases, of Transparent Conductive Oxides (TCOs) thin films2. These materials present peculiar optical and electronic properties, tailorable to meet specific requirements.
Even more desirable is the use of TCOs in the form of Nanocrystals (NCs), considering for example their solution processability. This enables a wider range of low cost and versatile implementations, such as the use of flexible, polymeric substrates3.
Nonetheless, to consider them as valid alternative materials in optoelectronics, it’s essential to have a firm control over synthesis parameters4. Process scalability holds a crucial value, considering future applications and greater production volumes.
In this contribution, we investigated methods for composition control and dopant placement in the NCs structure through colloidal synthesis. In particular, we analyzed the effects of the variation of precursor concentration injected overtime. This applies to a wide variety of doped and undoped TCOs. Among them, we focused on Indium Tin Oxide (ITO) NCs, with different composition profiles. Moreover, we present some preliminary analysis on Zinc Iron Oxide (ZIO) NCs. Both materials are interesting in energy storage applications, owing to light-driven charge accumulation.
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