High Responsivity Solar-Blind Ultraviolet Photodetector Based on (101)-Oriented SnO<sub>2</sub> Nanosheets

Ye, Qiannan; Yao, Rihui; Su, Guoping; Xu, Wei; Zhang, Zihan; Luo, Cheng; Qiu, Tian; Liu, Taijiang; Ning, Honglong; Peng, Junbiao

doi:10.1021/acsaelm.3c01174

ACS Appl. Electron. Mater.

2023

DOI: 10.1021/acsaelm.3c01174

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High Responsivity Solar-Blind Ultraviolet Photodetector Based on (101)-Oriented SnO₂ Nanosheets

Qiannan Ye,

Rihui Yao,

Guoping Su

et al.

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2024

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Cited by 3 publications

References 53 publications

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Self-powered photoelectrochemical solar-blind UV photodetector with enhanced responsivity SnO2 nanosheets-Ti3C2Tx

Ye,

Chen,

Yao

et al. 2024

Surfaces and Interfaces

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Self-powered photoelectrochemical solar-blind UV photodetector with enhanced responsivity SnO2 nanosheets-Ti3C2Tx

Ye,

Chen,

Yao

et al. 2024

Surfaces and Interfaces

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High-responsivity photoelectrochemical ultraviolet photodetector based on SnO₂ nanosheets-Ga₂O₃

Chen,

Huang,

Yao

et al. 2024

J. Phys. D: Appl. Phys.

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Tin oxide (SnO2) has garnered significant attention for its high spectral selectivity when used as an ultraviolet photodetector. In this study, SnO2 nanosheets (NSs) were synthesized via a hydrothermal method, followed by spin-coating a layer of Ga2O3 thin film to construct a heterojunction photoelectrochemical ultraviolet photodetector (PEC UV PD). Initially, we investigated the effect of precursor composition on the properties of the Ga2O3 thin films. It was observed that the thickness of the films increased with higher precursor concentrations, while the optical bandgap decreased. Based on these findings, we successfully fabricated the SnO2 NSs-Ga2O3 PEC UV PD. Electrochemical analysis revealed that as the precursor concentration used for spin-coating Ga2O3 increased, the device's responsivity and detectivity initially increased and then decreased. After optimization, the device prepared with a 0.2M Ga(NO3)3 solution spin-coated on SnO2 exhibited excellent spectral selectivity (R 265nm/R 420nm ~ 4472), a responsivity of 4.86 mA W-1, and a detectivity of 2.72×109 Jones. This study demonstrates that coating Ga2O3 is an effective approach to constructing high-performance SnO2-based UV PDs.

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Unraveling Oxygen Vacancies Effect on Chemical Composition, Electronic Structure and Optical Properties of Eu Doped SnO2

Mashkovtsev,

Kosykh,

Ishchenko

et al. 2024

Nanomaterials

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The influence of Eu doping (0.5, 1 and 2 mol.%) and annealing in an oxygen-deficient atmosphere on the structure and optical properties of SnO2 nanoparticles were investigated in relation to electronic structure. The X-ray diffraction (XRD) patterns revealed single-phase tetragonal rutile structure for both synthesized and annealed Eu-doped SnO2 samples, except for the annealed sample with 2 mol.% Eu. The results of X-ray photoelectron spectroscopy (XPS) emphasized that europium incorporated into the SnO2 host lattice with an oxidation state of 3+, which was accompanied by the formation of oxygen vacancies under cation substitution of tetravalent Sn. Moreover, XPS spectra showed the O/Sn ratio, which has been reduced under annealing for creating additional oxygen vacancies. The pulse cathodoluminescence (PCL) demonstrated the concentration dependence of Eu site symmetry. Combination of XRD, XPS and PCL revealed that Eu doping and following annealing induce strongly disordering of the SnO2 crystal lattice. Our findings provide new insight into the interaction of rare-earth metals (Eu) with host SnO2 matrix and new evidence for the importance of oxygen vacancies for optical and electronic structure formation.

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High Responsivity Solar-Blind Ultraviolet Photodetector Based on (101)-Oriented SnO₂ Nanosheets

Cited by 3 publications

References 53 publications

Self-powered photoelectrochemical solar-blind UV photodetector with enhanced responsivity SnO2 nanosheets-Ti3C2Tx

Self-powered photoelectrochemical solar-blind UV photodetector with enhanced responsivity SnO2 nanosheets-Ti3C2Tx

High-responsivity photoelectrochemical ultraviolet photodetector based on SnO₂ nanosheets-Ga₂O₃

Unraveling Oxygen Vacancies Effect on Chemical Composition, Electronic Structure and Optical Properties of Eu Doped SnO2

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High Responsivity Solar-Blind Ultraviolet Photodetector Based on (101)-Oriented SnO2 Nanosheets

Cited by 3 publications

References 53 publications

Self-powered photoelectrochemical solar-blind UV photodetector with enhanced responsivity SnO2 nanosheets-Ti3C2Tx

Self-powered photoelectrochemical solar-blind UV photodetector with enhanced responsivity SnO2 nanosheets-Ti3C2Tx

High-responsivity photoelectrochemical ultraviolet photodetector based on SnO2 nanosheets-Ga2O3

Unraveling Oxygen Vacancies Effect on Chemical Composition, Electronic Structure and Optical Properties of Eu Doped SnO2

Contact Info

Product

Resources

About

High Responsivity Solar-Blind Ultraviolet Photodetector Based on (101)-Oriented SnO₂ Nanosheets

High-responsivity photoelectrochemical ultraviolet photodetector based on SnO₂ nanosheets-Ga₂O₃