Metal–Semiconductor–Metal UV Detectors Using Transferrable Amorphous and Crystalline Zinc-Tin-Oxide Microsphere Monolayers
| Autor: | Do Hyun Kim, Subin Kim, Dong Su Shin, Zhanpeng Xian, Jinsub Park, Uijin Jung |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry General Chemical Engineering Detector Photodetector 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Metal semiconductor 0104 chemical sciences Amorphous solid Microsphere Metal Zinc tin oxide visual_art Monolayer visual_art.visual_art_medium Environmental Chemistry Optoelectronics 0210 nano-technology business |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 8:60-70 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.9b03684 |
| Popis: | Metal–semiconductor–metal UV photodetectors consisting of transferable zinc-tin-oxide (ZTO) microsphere (MS) monolayers with different phases and sizes are reported. From the experimental results, the crystallized Zn2SnO4 (c-ZTO)-MS-monolayer-based photodetectors present higher performance than amorphous ZnSnO3 (a-ZTO)-based photodetectors. The external quantum efficiencies of the a-ZTO- and c-ZTO-MS-based UV photodetectors are 16.7% (at 320 nm) and 580.9% (at 310 nm), respectively. Moreover, the UV-to-visible rejection ratios of the a-ZTO and c-ZTO are 20 (320 nm/400 nm) and 1484 (310 nm/400 nm), respectively, indicating that both fabricated ZTO MS UV photodetectors present great visible-blind properties. To further improve the optoelectronic device performance, the c-ZTO-MS-based UV photodetector is optimized using various sphere diameters, namely, 0.79, 0.99, 1.24, and 1.51 μm. The best photodetecting properties are obtained for the 1.24 μm c-ZTO MS detector, showing a 51.1-fold improvement in photocur... |
| Databáze: | OpenAIRE |
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