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A Novel p-Type ZnCoxOy Thin Film Grown by Atomic Layer Deposition.

ABSTRACT: Reported herein is the atomic layer deposition (ALD) of novel ternary ZnCoxOy films possessing p-type semiconducting behavior. The preparation comprises of optimized ZnO and Co3O4 deposition in sub-cycles using the commercially available precursors cyclopentadienylcobalt dicarbonyl (CpCo(CO)2), diethylzinc (DEZ) and ozone (O3). A systematic exploration of the film's microstructure, crystallinity, optical properties and electrical properties was conducted and revealed an association with Zn/Co stoichiometry. The noteworthy results include the following: (1) by adjusting the sub-cycle of ZnO/ Co3O4 to 1/10, a spinel structured ZnCoxOy film was grown at 150 °C, with it exhibiting a smooth surface, good crystallinity and high purity; (2) the material transmittance and bandgap decreased as the Co element concentration increased; (3) the ZnCoxOy film is more stable than its p-type analog Co3O4 film; and (4) upon p-n diode fabrication, the ZnCoxOy film demonstrated good rectification behaviors as well as very low and stable reverse leakage in forward and reverse-biased voltages, respectively. Its application in thin film transistors and flexible or transparent semiconductor devices is highly suggested.

SUBMITTER: Li L 

PROVIDER: S-EPMC9565241 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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A Novel p-Type ZnCo<sub>x</sub>O<sub>y</sub> Thin Film Grown by Atomic Layer Deposition.

Li Leyi L   Wan Zhixin Z   Wen Quan Q   Lv Zesheng Z   Xi Bin B  

Nanomaterials (Basel, Switzerland) 20220927 19

Reported herein is the atomic layer deposition (ALD) of novel ternary ZnCo<sub>x</sub>O<sub>y</sub> films possessing p-type semiconducting behavior. The preparation comprises of optimized ZnO and Co<sub>3</sub>O<sub>4</sub> deposition in sub-cycles using the commercially available precursors cyclopentadienylcobalt dicarbonyl (CpCo(CO)<sub>2</sub>), diethylzinc (DEZ) and ozone (O<sub>3</sub>). A systematic exploration of the film's microstructure, crystallinity, optical properties and electrical  ...[more]

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