Thin-Film Optical Devices Based on Transparent Conducting Oxides: Physical Mechanisms and Applications
| Autor: | Danyoung Cha, Jiung Jang, Yeonsu Kang, Sungsik Lee, Junyoung Bae |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
optical synaptic devices General Chemical Engineering Oxide 02 engineering and technology 01 natural sciences photo-sensors law.invention Inorganic Chemistry chemistry.chemical_compound law Metastability oxygen defects 0103 physical sciences lcsh:QD901-999 General Materials Science Thin film 010302 applied physics business.industry Transistor Persistent photoconductivity 021001 nanoscience & nanotechnology Condensed Matter Physics Controllability persistent photoconductivity chemistry Optoelectronics lcsh:Crystallography 0210 nano-technology business transparent conducting oxides Layer (electronics) Communication channel |
| Zdroj: | Crystals, Vol 9, Iss 4, p 192 (2019) |
| ISSN: | 2073-4352 |
| Popis: | This paper provides a review of optical devices based on a wide band-gap transparent conducting oxide (TCO) while discussing related physical mechanisms and potential applications. Intentionally using a light-induced metastability mechanism of oxygen defects in TCOs, it is allowed to detect even visible lights, eluding to a persistent photoconductivity (PPC) as an optical memory action. So, this PPC phenomenon is naturally useful for TCO-based optical memory applications, e.g., optical synaptic transistors, as well as photo-sensors along with an electrical controllability of a recovery speed with gate pulse or bias. Besides the role of TCO channel layer in thin-film transistor structure, a defective gate insulator can be another approach for a memory operation with assistance for gate bias and illuminations. In this respect, TCOs can be promising materials for a low-cost transparent optoelectronic application. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|