Abstract
Recently, perovskite-based light-emitting devices (LEDs) have been invested with near-infrared, red, green, and blue emissions. And, short-wavelength perovskite LEDs targeted at violet emission remain a significant challenge. Moreover, the majority of previously reported devices were focused on the lead-containing halide perovskites. In this research, for the first time, EACaI3 (270 nm) was proposed as ultraviolet-C potential lead-free perovskite material with direct ultra-wide bandgap property with 0.03% imaginary part of phonon density of state. The perovskite EACaI3 has dynamic stability and could be used for devices demonstrated with excellent working stability. These results suggest that the lead-free EACaI3 are potentially attractive candidates for preparing environment-friendly and stable ultra-wide band gap device.
Original language | English |
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Pages (from-to) | 66-70 |
Number of pages | 5 |
Journal | IEEE Transactions on Nanotechnology |
Volume | 21 |
DOIs | |
State | Published - 2022 |
Keywords
- lead-free
- Perovskite
- ultra-wide band gap device
- ultraviolet-C