Journal
RSC ADVANCES
Volume 12, Issue 6, Pages 3518-3523Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ra00217e
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Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2020R1A2C2004864]
- National Research Foundation of Korea [2020R1A2C2004864] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This research presents a method to reduce the resistance of amorphous indium-gallium-zinc-oxide (a-IGZO) using a vacuum-free solution-based metallization (VSM) process. By dipping the a-IGZO into trimethyl aluminium (TMA) solution, the conductivity of a-IGZO can be significantly enhanced. Self-aligned top-gate (SATG) a-IGZO thin-film-transistors (TFTs) were successfully fabricated using the VSM process, and the mechanism was explained using X-ray photoelectron spectroscopy (XPS).
This research demonstrates a method to reduce the resistance of amorphous indium-gallium-zinc-oxide (a-IGZO) using a vacuum-free solution-based metallization (VSM) process, which revolutionizes the metallization process thanks to its simplicity, by simply dipping the a-IGZO into trimethyl aluminium (TMA, (CH3)(3)Al) solution. From the XPS results, it was found that oxygen vacancies were generated after the VSM process, resulting in the enhanced conductivity. Various metallization time and solution temperature conditions were investigated, and the measured conductivity of the a-IGZO could be enhanced up to 20.32 S cm(-1), which is over 10(5) times larger compared to that of the untreated a-IGZO. By utilizing the VSM process, self-aligned top-gate (SATG) a-IGZO thin-film-transistors (TFTs) were successfully fabricated, and to provide an explanation for the mechanism, X-ray photoelectron spectroscopy (XPS) was employed.
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