Investigation of ZnO as a perspective material for photonics
β Scribed by Khranovskyy, V. ;Yazdi, G. R. ;Lashkarev, G. ;Ulyashin, A. ;Yakimova, R.
- Book ID
- 105364681
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 316 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0031-8965
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β¦ Synopsis
Abstract
Emissive properties of ZnO are of great interests in terms of the UV LED device design. The persistent βgreenβ luminescence due to deep defect is an obstacle for obtaining an intense UV emission, expected from ZnO. We report the positive role of thermally diffused H toward quenching the defect emission in ZnO. It is suggested that hydrogen passivates defects responsible for DLE, resulting in efficient near band edge luminescence. Asβgrown ZnO/SiN__~x~__:H/Si films, deposited at 350 Β°C demonstrate intense narrow peaks of UV emission at 380 nm and a ratio of emission intensities, NBE/DLE β 42. (Β© 2008 WILEYβVCH Verlag GmbH & Co. KGaA, Weinheim)
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Wannier-Mott excitons in the wurzite-type semiconductor material ZnO are stable at room temperature, have an extremely large oscillator strength and emit purple light. This makes ZnO an excellent potential candidate for the fabrication of room-temperature lasers where the coherent light amplificatio