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A Study to Improve the Performance of Mixed Cation–Halide Perovskite-Based UVC Photodetectors
| Content Provider | MDPI |
|---|---|
| Author | Choi, Hyung Wook |
| Copyright Year | 2022 |
| Description | 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 $cm^{2}$/Vs and a high on/off ratio of $10^{5}$% at a −2 V bias, under 254 nm light irradiation with an intensity of 0.6 $mW/cm^{2}$. The responsivity, detectivity, and external quantum efficiency of the as-fabricated detector were 5.07 mA/W, 5.49 × $10^{11}$ 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. |
| Starting Page | 1132 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano12071132 |
| Journal | Nanomaterials |
| Issue Number | 7 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-03-29 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Industrial Engineering Mixed Cation Mixed Halide Perovskite Device Uvc Sensor Photodetector |
| Content Type | Text |
| Resource Type | Article |
