Passivation Effect and Stability of Diamond-Like Carbon Film on CdZnTe Devices
| العنوان: | Passivation Effect and Stability of Diamond-Like Carbon Film on CdZnTe Devices |
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| المؤلفون: | Xiaoyan Liang, Jiahua Min, Yue Shen, Linjun Wang, Jijun Zhang, Yue Zhao, Zhaoxin Liu |
| المصدر: | Journal of Electronic Materials. 47:4388-4393 |
| بيانات النشر: | Springer Science and Business Media LLC, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 010302 applied physics, Materials science, Solid-state physics, Diamond-like carbon, Passivation, business.industry, Detector, 02 engineering and technology, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, symbols.namesake, X-ray photoelectron spectroscopy, 0103 physical sciences, Microscopy, Materials Chemistry, symbols, Optoelectronics, Electrical and Electronic Engineering, 0210 nano-technology, business, Raman spectroscopy, Leakage (electronics) |
| الوصف: | Leakage currents of a CdZnTe (CZT) detector are desired to be as low as possible for a better signal-to-noise ratio in the acquisition of x-ray/gamma-ray spectra. Surface passivation plays a major role in reduction of the surface leakage current and thereby improves the detector performance. In this paper, diamond-like carbon (DLC) film has been introduced as the passivation layer for a CZT detector. Passivation effect and stability of the DLC film on CZT devices have been investigated by the Raman spectrum, x-ray photoelectron spectroscopy (XPS), atomicforce microscopy (AFM) and current–voltage characteristic. High-quality DLC films were effectively fabricated on CZT devices measured by the Raman spectrum. The XPS in-depth profiling of CZT passivated with DLC film demonstrated that no interface reaction occurred, and DLC effectively prevented the oxidation reaction to produce the state Te4+ in Te3d spectra. Moreover, the surface leakage current evidently dropped after the DLC film passivation. In addition, properties of the DLC films with different thickness were investigated. It was shown that the effect of this passivation over stability with time is not perfect and an optimum thickness of the DLC film is proposed for reaching the best stability for CZT devices. |
| تدمد: | 1543-186X 0361-5235 |
| DOI: | 10.1007/s11664-018-6371-x |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f1628ce597a51eecb1380284a277845b https://doi.org/10.1007/s11664-018-6371-x |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........f1628ce597a51eecb1380284a277845b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1543186X 03615235 |
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| DOI: | 10.1007/s11664-018-6371-x |