UV–Visible Spectroscopic Analysis of Electrical Properties in Alkali Metal‐Doped Amorphous Zinc Tin Oxide Thin‐Film Transistors

Abstract

Solution-processed and alkali metals, such as Li and Na, are introduced in doped amorphous zinc tin oxide (ZTO) semiconductor TFTs, which show better electrical performance, such as improved field effect mobility, than intrinsic amorphous ZTO semiconductor TFTs. Furthermore, by using spectroscopic UV-visible analysis we propose a comprehensive technique for monitoring the improved electrical performance induced by alkali metal doping in terms of the change in optical properties. The change in the optical bandgap supported by the Burstein-Moss theory could successfully show a mobility increase that is related to interstitial doping of alkali metal in ZTO semiconductors.

Effects of film thickness and thermal treatment on the structural and opto-electronic properties of Ga-doped ZnO films deposited by sol–gel method

“…As shown in Fig. 5, the O 1s peaks that were fitted using Gaussian fitting were cantered at $ 530.2 eV, which represents the oxygen bonds from metal oxide, $ 531.3 eV, which is related to the oxygen bonds with oxygen vacancy, and $ 532.4 eV, which is attributed to the chemisorbed oxygen [41][42][43]. The atomic ratios of different oxygen bonds are calculated and inserted in the corresponding figure.…”

Combustion-process derived comparable performances of Zn-(In:Sn)-O thin-film transistors with a complete miscibility

“…6 However, the high investment costs, the limited storage, and the serious uneven deposit of In element prevent the long-term application in future displays. 7,8 Therefore, investigations on the In substitution have been urgently explored to achieve the comparable electrical performances.…”

Facile preparation of amorphous iron nanoparticles filled alginate matrix composites with high stability

“…The XPS O 1s spectrum of AB-amorphous iron (Fig. 4b) exhibited no distinct peaks at 529-530 eV, which are attributed to metal-O species, such as Fe-O species, indicating that there are no interactions between the amorphous iron nanoparticles and the oxygenic groups of the alginate [14,15].…”