Solution-processed and self-powered photodetector in vertical architecture using mixed-halide perovskite for highly sensitive UVC detection

Nguyen, Thi My Huyen; Kim, Sangmo; Bark, Chung Wung

doi:10.1039/d0ta08738f

Cited by 59 publications

(53 citation statements)

References 46 publications

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“…R is defined as R = ( I 254 − I dark )/ P × S mA/W [ 14 ], where I 254 is the current when irradiated with 254 nm light, I dark is the dark environment current, P is the power of the incident light, and S is the irradiated area of the device [ 46 ]. R gradually decreased as the bias decreased owing to the change in the photon-charge conversion efficiency of the photodetector [ 10 ]. Under 254 nm illumination, with an output of 0.6 mW/cm 2 , the R values of (FAPbI 3 ) 1−x (MAPbI 3 ) x were 0.85, 2.77, 5.07, 0.68, and 0.26 mA/W at −2 V when x was 0, 0.03, 0.05, 0.07, and 0.1, respectively.…”

Section: Resultsmentioning

confidence: 99%

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A Study to Improve the Performance of Mixed Cation–Halide Perovskite-Based UVC Photodetectors

Choi¹,

Choi²

2022

Nanomaterials

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Photodetectors convert optical signals into electrical signals and demonstrate application potential in various fields, such as optical communication, image detection, environmental monitoring, and optoelectronics. In this study, a mixed cation–halide perovskite-based ultraviolet C photodetector was fabricated using a solution process. The higher the mobility of the perovskite carrier, which is one of the factors affecting the performance of electronic power devices, the better the carrier diffusion. The on/off ratio and responsivity indicate the sensitivity of the response, and together with the detectivity and external quantum efficiency, these parameters demonstrate the performance of the detector. The detector fabricated in this study exhibited a mobility of 202.2 cm2/Vs and a high on/off ratio of 105% at a −2 V bias, under 254 nm light irradiation with an intensity of 0.6 mW/cm2. The responsivity, detectivity, and external quantum efficiency of the as-fabricated detector were 5.07 mA/W, 5.49 × 1011 Jones, and 24.8%, respectively. These findings demonstrate that the solution process employed in this study is suitable for the fabrication of mixed cation–halide perovskites which show immense potential for use as photodetectors.

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Section: Resultsmentioning

confidence: 99%

“…UVC radiation is largely absorbed by the ozone layer [ 8 ]. However, UVC radiation is emitted by artificial light sources, such as mercury lamps, UV germicidal bulbs, and arc discharges [ 9 , 10 , 11 , 12 ], and is harmful to human health. Additionally, it is the cause of many safety issues in industrial facilities [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

A Study to Improve the Performance of Mixed Cation–Halide Perovskite-Based UVC Photodetectors

Choi¹,

Choi²

2022

Nanomaterials

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“…To overcome existing trade-offs between performance, form factor, cost, and most importantly, power consumption, self-powered PDs are being investigated with intense interest. [41][42][43] Self-driven PDs can be obtained when photodiodes work at zero bias, similar to solar cells working at short-circuit conditions. Owing to their excellent electro-optical characteristics, the OLHP based self-powered PDs can offer the benefit of being lightweight with small device size, without compromising on device performance.…”

Section: Photodetector (Pd)mentioning

confidence: 99%

Organolead halide perovskites beyond solar cells: self-powered devices and the associated progress and challenges

2021

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“…UVC is already reaching the earth’s surface from polar regions [ 11 ]. UVC is also generated by artifacts such as arc welders, mercury lamps, and lead wires [ 12 ]. Therefore, the study of UVC photodetectors is essential.…”

Section: Introductionmentioning

confidence: 99%

A Study on UVC Photodetector Using Mixed-Cation Perovskite with High Detection Rate as Light-Absorption Layer

Hong

Choi

2022

Nanomaterials

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In this study, a mixed-cation perovskite ultraviolet (UV) C photodetector was fabricated using a simple formamidinium iodide (FAI) post-treatment process. The fabricated device uses FAxMA1−xPbI3 perovskite as a light-absorption layer and SnO2, which has high transmittance in the UVC wavelength region, as an electron-transport layer. The fabricated device exhibited a response of 50.8 mA/W, detectability of 4.47 × 1013 Jones, and external quantum efficiency of 53%. Therefore, the approach used in this study is promising for many applications in the UVC wavelength region.

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Solution-processed and self-powered photodetector in vertical architecture using mixed-halide perovskite for highly sensitive UVC detection

Abstract: Self-powered and solution-processable halide perovskite-based photodetector exhibited an outstanding on/off photocurrent and superior stability under UVC illumination.

Cited by 59 publications

References 46 publications

A Study to Improve the Performance of Mixed Cation–Halide Perovskite-Based UVC Photodetectors

A Study to Improve the Performance of Mixed Cation–Halide Perovskite-Based UVC Photodetectors

Organolead halide perovskites beyond solar cells: self-powered devices and the associated progress and challenges

A Study on UVC Photodetector Using Mixed-Cation Perovskite with High Detection Rate as Light-Absorption Layer

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