Abstract
In this study, we present the manufacture and characterisation of a novel thin film photodiode based on a GaN/MoS2 composite. The purpose of this research is to explore the potential of this composite material for applications in fast response photodetection. The photodiodes were fabricated using physical vapor deposition technique. The investigation of the surface topology and structural characteristics of the nanostructured GaN/MoS2 thin films was conducted using scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction techniques. The electrical performance of the fabricated photodiodes was investigated by measuring their current–voltage (I–V) characteristics within a bias voltage range from − 2 to + 2 V. The external quantum efficiency of the photodiodes were measured to be up to 11.86% and 8.26% for the pn-photodiode and Schottky photodiode, respectively. On the other hand, the internal quantum efficiency of the fabricated photodiodes were measured to be up to 13.78% and 10.02% for the pn-photodiode and Schottky photodiode, respectively. Also, a response time of 800 µs and 18.23 ms for Schottky-photodiode and pn-photodiodes respectively. These results demonstrate the potential of GaN/MoS2 composite photodiodes for fast response photodetection applications.
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Acknowledgements
The authors would give their sincere thanks and gratefulness to NILES, Cairo University, for the encouragement, great help and endless support to come out with this study. The authors are thankful to the deanship of scientific research at the university of Bisha for supporting this work through the Fast-Track Research support program.
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“All authors contributed to the study conception and design. Material preparation, data collection, measurements and analysis were performed by [Ahmed Abdelhady A. Khalil], [Abdallah M. Karmalawi] and [Alaaeldin A. Abdelmageed]. The first draft of the manuscript was written by [Hamdan A. S. El-shamiri], [Heba A. Shawkey] and [Emad Mousa] and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript. Revised by [Hamed M. Kandel], [Maram T. H. Abou Kana], and [Mohamed A. Swillam]”.
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Khalil, A.A.A., Karmalawi, A.M., Abdelmageed, A.A. et al. Impact behavior of a novel GaN/MoS2 composite photodiode based thin-film by RF-sputtering for fast response photodetection application. Opt Quant Electron 56, 804 (2024). https://doi.org/10.1007/s11082-024-06643-w
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DOI: https://doi.org/10.1007/s11082-024-06643-w