Concurrent Inhibition and Redistribution of Spontaneous Emission from All Inorganic Perovskite Photonic Crystals
| Autor: | Liliana Tjahjana, Dao Hua Zhang, Edwin Hang Tong Teo, Zhenwei Xie, Aozhen Xie, Landobasa Y. M. Tobing, Songyan Hou, Jin Zhou, Hong Wang, Cuong Dang, Junhong Yu, Chathuranga Hettiarachchi, Muhammad Danang Birowosuto |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Condensed Matter::Materials Science Semiconductor 0103 physical sciences Optoelectronics Quantum efficiency Spontaneous emission Electrical and Electronic Engineering Thin film Photonics 0210 nano-technology business Refractive index Biotechnology Diode Photonic crystal |
| Zdroj: | ACS Photonics. 6:1331-1337 |
| ISSN: | 2330-4022 |
| Popis: | All inorganic cesium lead halide perovskite semiconductors exhibit great potential for nanolasers, light-emitting diodes, and solar cells, because of their unique properties including low threshold, high quantum efficiency and low cost. However, the high material refractive index of perovskite semiconductors hinders light extraction efficiency for photonic and illumination applications. In this paper, we demonstrate high light extraction efficiency achieved in CsPbBr2.75I0.25 two-dimensional photonic crystals. The perovskite photonic crystals exhibit both emission rate inhibition and light energy redistribution simultaneously. We observed a 7.9-fold reduction of spontaneous emission rate with a slower decay in CsPbBr2.75I0.25 photonic crystals, because of the photonic bandgap effect (PBG). We also observed a 23.5-fold PL emission enhancement, as a result of light energy redistribution from 2D guided modes to vertical direction in perovskite photonic crystals thin films, indicating a high intrinsic light e... |
| Databáze: | OpenAIRE |
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